CN107294895A

CN107294895A - Filter optimization method, wave filter collocation method, relevant device and system

Info

Publication number: CN107294895A
Application number: CN201610201208.9A
Authority: CN
Inventors: 赵兆; 王奇; 龙毅; 郭志恒; 程型清; 龚希陶; 麦塔·舒尔曼
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2016-03-31
Filing date: 2016-03-31
Publication date: 2017-10-24
Anticipated expiration: 2036-03-31
Also published as: CN107294895B; WO2017167269A1

Abstract

The embodiment of the invention discloses filter optimization method, wave filter collocation method, relevant device and system.The filter optimization method includes：Ratio is revealed according to target adjacent channel to require, determines that meeting the target adjacent channel reveals transmitting filter coefficient than requiringAccording to set channel statistic H and target adjacent channel leakage is met than requiringAnalyze so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientThe preferred receiving filter coefficient is approached using known window functionObtain and the preferred receiving filter coefficientApproximate receiving filter coefficientThe receiving filter coefficientEnd filter is received for configuring.Such scheme can improve Signal to Interference plus Noise Ratio, improve communication performance.

Description

Filter optimization method, wave filter collocation method, relevant device and system

Technical field

The present invention relates to the communications field, more particularly to filter optimization method, wave filter collocation method, relevant device and it is System.

Background technology

OFDM (Orthogonal Frequency Division Multiplexing, OFDM) system is near Most widely used communication system over year, for example, Long Term Evolution (Long Term Evolution, LTE) system.

Relative to LTE communication system, next generation communication system will not only be lifted in performance, with greater need for passing through That newly eats dishes without rice or wine designs to support new type of service.I.e. in traditional mobile broadband (Mobile BroadBand, MBB) business base On plinth, in addition it is also necessary to support machine communication (Machine-To-Machine, M2M), man-machine communication (Man-Compute- Communication, M-C-C), and other rich and varied Added Business, such as highly reliable low latency formula communication (Ultra- Reliable and Low Latency Communications, uMTC) and a large amount of types mechanically communicate (Massive Machine Type Communications, MMTC).New technology of eating dishes without rice or wine includes coding, and waveform, multiple access and frame structure etc. are multiple The technology of dimension, wherein, waveform technology is to realize the key link that multi-service is flexibly supported, the new of 5G systems is eated dishes without rice or wine to be very Important.

Due to OFDM (the Orthogonal Frequency based on cyclic prefix (Cyclic Prefix, CP) Division Multiplexing, OFDM) technology, i.e. CP-OFDM, the ability with good anti-multipath jamming is and various The features such as MIMO technology has good compatibility, existing ofdm system is generally using tools of the CP-OFDM as multicarrier waveform Body scheme.But, CP-OFDM systems are fixed carries out windowing process using rectangular window, is suppressing adjacent channel leakage ratio The leakage of (Adjacent Channel Leakage Ratio, ACLR) and out-of-band power (Out Of Band Emission, ) etc. OOBE had the obvious disadvantage that in index, it is necessary to reserve certain protection band to suppress caused by different business or channel shape Adjacent time/frequency source block between interference.

The content of the invention

The embodiments of the invention provide filter optimization method, wave filter collocation method, relevant device and system, it can improve Signal to Interference plus Noise Ratio, improves communication performance, the different communication scenes to support.

In a first aspect, the embodiment of the present invention provides a kind of filter optimization method, this method includes：

Ratio is revealed according to target adjacent channel to require, is filtered it is determined that meeting the target adjacent channel leakage than desired transmission Ripple device coefficient

According to channel statistic H and target adjacent channel leakage is met than requiringCalculate so that connecing Receiving end Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientWherein, channel statistic, transmission filtering Device coefficient g_TX, and receiving filter coefficient gamma (t)_RX(t) it is to determine the receiving terminal Signal to Interference plus Noise Ratio SINR_RXVariable；

The preferred receiving filter coefficient is approached using known window functionObtain and the preferred reception Filter coefficientApproximate receiving filter coefficientIt is describedEnd filter is received for configuring.

It is described according to channel statistic H with reference in a first aspect, in the first possible implementation of first aspect With meet target adjacent channel leakage than requiringCalculate so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum is excellent The receiving filter coefficient of choosingIncluding：

Obtained by following algorithms so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficient

Wherein, g_TX(t) it is equal to

With reference in a first aspect, or first aspect the first possible implementation, second in first aspect can In the implementation of energy, in addition to：

According to the channel statistic H and describedCalculate so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum It is preferred that transmitting filter coefficientWherein, the channel statistic, the transmitting filter coefficient g_TX(t), and The receiving filter coefficient gamma_RX(t) it is to determine the transmitting terminal Signal to Interference plus Noise Ratio SINR_TXVariable；

The preferred transmitting filter coefficient is approached using known window functionObtain and the preferred hair Send filter coefficientApproximate transmitting filterIt is describedFor configuring sending filter.

With reference to second of possible implementation of first aspect, in the third possible implementation of first aspect In, it is described according to the channel statistic H and describedCalculate so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum It is preferred that transmitting filter coefficientIncluding：

Obtained by following algorithms so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum preferred transmitting filter coefficient

Wherein, γ_RX(t) it is equal to

With reference in a first aspect, either second of the first possible implementation or first aspect of first aspect Possible implementation, or first aspect the third possible implementation, in the 4th kind of possible reality of first aspect In existing mode, obtained and the preferred receiving filter coefficient describedApproximate receiving filter coefficient Afterwards, in addition to：

By iterative optimization process come laddering optimization transmitting filter coefficient g_TX(t) with receiving filter coefficient γ_RX(t)；Wherein：

In i+1 wheel, preferred receiving filter coefficient is calculated by following algorithms Wherein, g_TX(t) it is equal to It is obtaining with preferred transmitting filter coefficient in being taken turns i-thApproximate transmitting filter coefficient,It is Calculate obtaining so that transmitting terminal Signal to Interference plus Noise Ratio SINR in i wheels_TXMaximum preferred transmitting filter coefficient；

Or, in i+1 wheel, preferred transmitting filter coefficient is calculated by following algorithms Wherein, γ_RX(t) it is equal toBe It is obtaining with preferred receiving filter coefficient in i-th wheelApproximate receiving filter coefficient,It is in the i-th wheel It is middle to calculate obtaining so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficient；

Wherein, i is positive integer.

With reference in a first aspect, either second of the first possible implementation or first aspect of first aspect Possible implementation, either the 4th kind of the third possible implementation or first aspect of first aspect is possible Implementation, in the 5th kind of possible implementation of first aspect, above-mentioned receiving filter coefficient g_TX(t) it is, described to send Filter coefficient γ_RX(t) characterized by predefined pulse parameter；

The pulse parameter includes：The all or part of parameter preset set；The parameter preset set includes：First mark Will position Flag_head, the second flag bit Flag_tail, the first numerical value of N₁, second value N₂, pulse shape P_typeAnd it is described to be configured Length K of the pulsion phase for single symbol period.Wherein, the first flag bit Flag_headFor designated symbol head whether Do pulse-shaping, the second flag bit Flag_tailPulse-shaping, first numerical value of N whether are done for designated symbol afterbody₁ For indicate to do pulse-shaping in single symbol and amplitude weight be not equal to 1 sample point number, the second value N₂With The number of the sample point of pulse-shaping is done in the single outer symbol of instruction；The pulse shape P_typeFor indicating the arteries and veins to be configured The shape of punching.

Second aspect, the embodiment of the present invention provides a kind of wave filter collocation method, and this method is applied to base station side, including：

If present communications scene belong to it is default the need for carry out the communication scenes of pulse-shaping processing, base station determines pin Pulse to be configured to the present communications scene；The pulse to be configured is by set of pulses parameter characterization；

The configuration information that receiving terminal apparatus is sent, the configuration information is used for the pulse for indicating that the terminal device is supported Shape；

If the configuration information shows that the terminal device supports the pulse to be configured, and judges to need at end Pulse-shaping processing is done in end equipment side, then the pulse parameter by the pulse to be configured is notified to terminal device；The pulse ginseng Number is used for the filter coefficient for configuring the terminal device.

With reference to second aspect, in the first possible implementation of second aspect, the needs are in terminal equipment side Pulse-shaping processing is done, including：

, it is necessary to carry out impulse modulation in transmitting terminal during uplink；Or, in downlink transmission process, it is necessary to Impulse modulation is carried out in receiving terminal；

The pulse parameter is used for the filter coefficient for configuring the terminal device, including：

During uplink, the pulse parameter of the pulse to be configured is used for the transmission filtering of configurating terminal device Device；Or, in downlink transmission process, the pulse parameter of the pulse to be configured is used for accepting filter for configurating terminal device Device.

With reference to the first possible implementation of second aspect, or second aspect, second in second aspect can In the implementation of energy, in addition to：If it is judged that needing to do pulse-shaping processing in base station side, then according to the arteries and veins to be configured The pulse parameter of punching, configures the filter coefficient of the base station side；The pulse parameter is used for the wave filter for configuring the base station Coefficient.

With reference to second of possible implementation of second aspect, in the third possible implementation of second aspect In, the needs do pulse-shaping processing in base station side, including：

, it is necessary to carry out impulse modulation in receiving terminal during uplink；Or, in downlink transmission process, it is necessary to Impulse modulation is carried out in transmitting terminal；

The pulse parameter is used for the filter coefficient for configuring the base station, including：

During uplink, the pulse parameter of the pulse to be configured is used for the receiving filter system for configuring base station Number；Or, in downlink transmission process, the pulse parameter of the pulse to be configured is used for the transmitting filter system for configuring base station Number.

With reference to the third possible realization side of the first possible implementation of second aspect, or second aspect Formula, it is described to judge to need to carry out impulse modulation, bag in transmitting terminal in the 4th kind of possible implementation of second aspect Include：

In the type of service of transmission services, the preset requirement of communication scenes, the expense of protection band at least one of come Judge whether to need to carry out impulse modulation in transmitting terminal.

With reference to the third possible realization side of the first possible implementation of second aspect, or second aspect Formula, it is described to judge to need to carry out impulse modulation, bag in receiving terminal in the 5th kind of possible implementation of second aspect Include：

Needs are judged whether with least one in the exponent number of modulation according to the demodulation performance of receiving terminal, the coding of signal Impulse modulation is carried out in receiving terminal.

With reference to second aspect, either second of the possible implementation of the first of second aspect or second aspect Possible implementation, either the 4th kind of the third possible implementation or second aspect of second aspect is possible Implementation, or second aspect the 5th kind of possible implementation, in the 6th kind of possible implementation of second aspect In, the pulse parameter by the pulse to be configured is notified to the terminal device, including：

Using the dynamic signaling with the fixed cycle, the pulse parameter is notified to the terminal device；Or,

Using real-time dynamic signaling, the pulse parameter is notified to the terminal device.

With reference to the 6th kind of possible implementation of second aspect, in the 7th kind of possible implementation of second aspect In, the signaling carries the pulse parameter of the pulse to be configured；Or, the signaling carries the instruction of the pulse to be configured Information.

With reference to second aspect, either second of the possible implementation of the first of second aspect or second aspect Possible implementation, either the 4th kind of the third possible implementation or second aspect of second aspect is possible 6th kind of possible realization side of implementation, either the 5th of second aspect kind possible implementation or second aspect Formula, or second aspect the 7th kind of possible implementation, it is described in the 8th kind of possible implementation of second aspect The communication scenes of pulse-shaping processing are carried out the need for default including at least one of following：

The present communications scene belong to it is default the need for limit the scene of out-of-band power leakage, the terminal device and adjusted The resource edge coexisted in different OFDM setup parameters, the terminal device are spent using high order modulation or the modulating-coding plan of high-order Slightly, the current corresponding time-frequency decline of the terminal device reaches that predeterminable level, the corresponding resource location of above-mentioned terminal device are in The physical channel that frame head and/or postamble, the terminal device of data frame are presently in is the thing of pulse-shaping the need for presetting Manage channel；The OFDM setup parameters include circulating prefix-length and subcarrier width.

With reference to second aspect, either second of the possible implementation of the first of second aspect or second aspect Possible implementation, either the 4th kind of the third possible implementation or second aspect of second aspect is possible 6th kind of possible realization side of implementation, either the 5th of second aspect kind possible implementation or second aspect 8th kind of possible implementation of formula, either the 7th of second aspect kind possible implementation or second aspect, In 9th kind of possible implementation of two aspects, the pulse parameter includes：The all or part of parameter preset set；It is described Parameter preset set includes：First flag bit Flag_head, the second flag bit Flag_tail, the first numerical value of N₁, second value N₂, arteries and veins Rush shape P_typeAnd the pulsion phase to be configured is for the length K of single symbol period.Wherein, first flag bit Flag_headPulse-shaping, the second flag bit Flag whether are done for designated symbol head_tailIt is for designated symbol afterbody It is no to do pulse-shaping, first numerical value of N₁For indicating to do pulse-shaping in single symbol and amplitude weight is not equal to 1 and taken out The number of sampling point, the second value N₂For indicating that single outer symbol does the number of the sample point of pulse-shaping, the pulse Shape P_typeShape for indicating the pulse to be configured.

The third aspect, the embodiment of the present invention provides a kind of wave filter collocation method, and this method is applied to terminal equipment side, bag Include：

To base station send configuration information, the configuration information is used for the pulse shape that instruction terminal equipment is supported；

Receive the pulse parameter for the pulse to be configured that base station is notified；

Filter coefficient is configured according to the pulse parameter of the pulse to be configured.

With reference to the third aspect, in the first possible implementation of the third aspect, the institute that the reception base station is notified The pulse parameter of pulse to be configured is stated, including：

The dynamic signaling with the fixed cycle that base station is sent is received, the dynamic signaling with the fixed cycle is used to lead to Know the pulse parameter of the pulse to be configured；Or,

The real-time dynamic signaling that base station is sent is received, the real-time dynamic signaling is used to notify the pulse to be configured Pulse parameter.

With reference to the first possible implementation of the third aspect, in second of possible implementation of the third aspect In, the signaling carries the pulse parameter of the pulse to be configured；Or, the signaling carries the instruction of the pulse to be configured Information.

With reference to the third aspect, either second of the possible implementation of the first of the third aspect or the third aspect Possible implementation, in the third possible implementation of the third aspect, the pulse shape that the terminal device is supported For indicating whether the terminal device supports the corresponding pulse to be configured of present communications scene；The present communications Scape belong to it is default the need for carry out the communication scenes of pulse-shaping processing.

With reference to the third aspect, either second of the possible implementation of the first of the third aspect or the third aspect Possible implementation, or the third aspect the third possible implementation, in the 4th kind of possible reality of the third aspect In existing mode, it is described it is default the need for carry out pulse-shaping processing communication scenes include it is at least one of following：

Fourth aspect, the embodiment of the present invention provides a kind of communication network device, and the network equipment includes：

Determining unit, is required for revealing ratio according to target adjacent channel, it is determined that meeting the target adjacent channel leakage Than desired transmitting filter coefficient

First computing unit, for according to channel statistic H and meeting target adjacent channel leakage than requiringCalculate so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientWherein, channel Statistical property, transmitting filter coefficient g_TX, and receiving filter coefficient gamma (t)_RX(t) it is to determine that the receiving terminal letter is dry to make an uproar Compare SINR_RXVariable；

First approximating unit, for approaching the preferred receiving filter coefficient using known window function To with the preferred receiving filter coefficientApproximate receiving filter coefficientIt is describedFor configuring Receive end filter.

With reference to fourth aspect, in the first possible implementation of fourth aspect, first computing unit, specifically For：

Wherein, g_TX(t) it is equal to

With reference to the first possible implementation of fourth aspect, or fourth aspect, second in fourth aspect can In the implementation of energy, in addition to：

Second computing unit, for according to the channel statistic H and describedCalculate so that transmitting terminal is believed Dry make an uproar compares SINR_TXMaximum preferred transmitting filter coefficientWherein, channel statistic, the transmitting filter system Number g_TX, and the receiving filter coefficient gamma (t)_RX(t) it is to determine the transmitting terminal Signal to Interference plus Noise Ratio SINR_TXVariable；

Second approximating unit, for approaching the preferred transmitting filter coefficient using known window function To with the preferred transmitting filter coefficientApproximate transmitting filterIt is describedSent for configuring End filter.

With reference to second of possible implementation of fourth aspect, in the third possible implementation of fourth aspect In, second computing unit, specifically for：

Wherein, γ_RX(t) it is equal to

With reference to fourth aspect, either second of the possible implementation of the first of fourth aspect or fourth aspect Possible implementation, or fourth aspect the third possible implementation, in the 4th kind of possible reality of fourth aspect In existing mode, in addition to：Iterative optimization unit, is used for：Filtering is sent come laddering optimization by iterative optimization process Device coefficient g_TX(t) with receiving filter coefficient gamma_RX(t)；Wherein：

Wherein, i is positive integer.

With reference to fourth aspect, either second of the possible implementation of the first of fourth aspect or fourth aspect Possible implementation, either the 4th kind of the third possible implementation or fourth aspect of fourth aspect is possible Implementation, in the 5th kind of possible implementation of fourth aspect, the receiving filter coefficient g_TX(t) it is, described to send Filter coefficient γ_RX(t) characterized by predefined pulse parameter；

5th aspect, the embodiment of the present invention provides a kind of base station, and the base station includes：

Determining unit, if for present communications scene belong to it is default the need for carry out the communication field of pulse-shaping processing Scape, then to be configured pulse of the base station determination for the present communications scene；The pulse to be configured is by set of pulses parameter list Levy；

Receiving unit, the configuration information sent for receiving terminal apparatus, the configuration information is used to indicate the terminal The pulse shape that equipment is supported；

Judging unit, for judging whether the terminal device supports the pulse to be configured according to the configuration information, And judge whether to need to do pulse-shaping processing in terminal equipment side；

Notification unit, if show that the terminal device supports the pulse to be configured for the configuration information, and Judge to need to do pulse-shaping processing in terminal equipment side, then the pulse parameter by the pulse to be configured notifies to set to terminal It is standby；The pulse parameter is used for the filter coefficient for configuring the terminal device.

With reference to the 5th aspect, in the first possible implementation of the 5th aspect, the needs are in terminal equipment side Pulse-shaping processing is done, including：

With reference to the first possible implementation of the 5th aspect, or the 5th aspect, second at the 5th aspect can In the implementation of energy, in addition to：Dispensing unit, for if it is judged that need in base station side to do pulse-shaping processing, then root According to the pulse parameter of the pulse to be configured, the filter coefficient of the base station side is configured；The pulse parameter is used to configure institute State the filter coefficient of base station.

With reference to second of possible implementation of the 5th aspect, in three kinds of possible implementations of the 5th aspect, The needs do pulse-shaping processing in base station side, including：

With reference to the third possible realization side of the first possible implementation of the 5th aspect, or the 5th aspect Formula, the 5th aspect four kinds of possible implementations in, the judge module specifically for：According to the service class of transmission services In type, the preset requirement of communication scenes, the expense of protection band at least one of come judge whether need enter horizontal pulse in transmitting terminal Modulation.

With reference to the third possible realization side of the first possible implementation of the 5th aspect, or the 5th aspect Formula, the 5th aspect five kinds of possible implementations in, the judge module specifically for：According to the solution tonality of receiving terminal Energy, the coding of signal judge whether that needs carry out impulse modulation in receiving terminal with least one in the exponent number of modulation.

With reference to the 5th aspect, either second in terms of the first possible implementation or the 5th of the 5th aspect Possible implementation, either the 4th kind in terms of the third possible implementation or the 5th of the 5th aspect is possible The 5th kind of possible implementation in terms of implementation, or the 5th, in six kinds of possible implementations of the 5th aspect, The notification unit, specifically for：

With reference to the 6th kind of possible implementation of the 5th aspect, in the 7th kind of possible implementation of the 5th aspect In, the signaling carries the pulse parameter of the pulse to be configured；Or, the signaling carries the instruction of the pulse to be configured Information.

With reference to the 5th aspect, either second in terms of the first possible implementation or the 5th of the 5th aspect Possible implementation, either the 4th kind in terms of the third possible implementation or the 5th of the 5th aspect is possible 6th kind of possible realization side of implementation, either the 5th kind of possible implementation of the 5th aspect or the 5th aspect The 7th kind of possible implementation in terms of formula, or the 5th, it is described pre- in eight kinds of possible implementations of the 5th aspect If the need for carry out pulse-shaping processing communication scenes include it is at least one of following：

With reference to the 5th aspect, either second in terms of the first possible implementation or the 5th of the 5th aspect Possible implementation, either the 4th kind in terms of the third possible implementation or the 5th of the 5th aspect is possible 6th kind of possible realization side of implementation, either the 5th kind of possible implementation of the 5th aspect or the 5th aspect 8th kind of possible implementation of formula, either the 7th kind of possible implementation of the 5th aspect or the 5th aspect, the In nine kinds of possible implementations of five aspects, the pulse parameter includes：The all or part of parameter preset set；It is described pre- Setting parameter set includes：First flag bit Flag_head, the second flag bit Flag_tail, the first numerical value of N₁, second value N₂, pulse Shape P_typeAnd the pulsion phase to be configured is for the length K of single symbol period.Wherein, the first flag bit Flag_head Pulse-shaping, the second flag bit Flag whether are done for designated symbol head_tailWhether arteries and veins is done for designated symbol afterbody It is washed into type, first numerical value of N₁For indicate to do pulse-shaping in single symbol and amplitude weight be not equal to 1 sample point Number, the second value N₂For indicating that single outer symbol does the number of the sample point of pulse-shaping, the pulse shape P_type Shape for indicating the pulse to be configured.

6th aspect, the embodiment of the present invention provides a kind of terminal device, and the terminal device includes：

Transmitting element, for base station send configuration information, the configuration information to be used for the arteries and veins that instruction terminal equipment is supported Rush shape；

Receiving unit, the pulse parameter of the pulse to be configured for receiving base station notice；

Dispensing unit, for configuring filter coefficient according to the pulse parameter of the pulse to be configured.

With reference to the 6th aspect, in the first possible implementation of the 6th aspect, the receiving unit is specific to use In：

With reference to the 6th aspect, in second of possible implementation of the 6th aspect, wait to match somebody with somebody described in the signaling carrying Put the pulse parameter of pulse；Or, the signaling carries the configured information of the pulse to be configured.

With reference to the 6th aspect, either second in terms of the first possible implementation or the 6th of the 6th aspect Possible implementation, in the third possible implementation of the 6th aspect, the pulse shape that the terminal device is supported For indicating whether the terminal device supports the corresponding pulse to be configured of present communications scene；The present communications Scape belong to it is default the need for carry out the communication scenes of pulse-shaping processing.

With reference to the 6th aspect, either second in terms of the first possible implementation or the 6th of the 6th aspect The third possible implementation in terms of possible implementation, or the 6th, in the 4th kind of possible reality of the 6th aspect In existing mode, it is described it is default the need for carry out pulse-shaping processing communication scenes include it is at least one of following：

7th aspect, the embodiment of the present invention provides a kind of communication network device, and the communication network device includes being used to hold The functional unit of the part or all of step of any implementation of row first aspect of the embodiment of the present invention.

Eighth aspect, the embodiment of the present invention provides a kind of base station, and the base station includes being used for performing the embodiment of the present invention the The functional unit of the part or all of step of the two any implementations of aspect.

9th aspect, the embodiment of the present invention provides a kind of terminal device, and the terminal device includes being used to perform the present invention The functional unit of the part or all of step of any implementation of the embodiment third aspect.

Eighth aspect, the embodiment of the present invention provides a kind of communication system, and the system includes：Base station and terminal device, wherein：

Base station in terms of the base station is the 5th or described by eighth aspect；

Terminal device described by the aspect of terminal device the 6th or the 9th.

By implementing filter optimization method provided in an embodiment of the present invention, by maximize receiving terminal Signal to Interference plus Noise Ratio come To preferred receiving filter coefficient or preferred transmitting filter coefficient, and using known window function go to approach described preferred Receiving filter coefficient or preferred transmitting filter coefficient, can carry Signal to Interference plus Noise Ratio, improve demodulation performance；By implementing the present invention The wave filter collocation method that embodiment is provided, is carried out under the communication scenes of pulse-shaping processing the need for default, by waiting to match somebody with somebody Put the pulse parameter of pulse to configure the wave filter of transmitting terminal and/or receiving terminal, the communication performance of whole communication system can be improved, Such as leakage of reduction out-of-band power, raising Signal to Interference plus Noise Ratio, reduction interference etc..

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Figure 1A -1F be the present embodiments relate to several possible application scenarios schematic diagrams；

Fig. 2 is the schematic flow sheet of filter optimization method provided in an embodiment of the present invention；

Fig. 3 is the schematic flow sheet of filter optimization method provided in an embodiment of the present invention；

Fig. 4 is a kind of schematic diagram of transceiving filter waveform example provided in an embodiment of the present invention；

Fig. 5 is the schematic flow sheet of wave filter collocation method provided in an embodiment of the present invention；

Fig. 6 is a kind of configuration diagram of communication network device provided in an embodiment of the present invention；

Fig. 7 is a kind of structural representation of base station provided in an embodiment of the present invention；

Fig. 8 is a kind of structural representation of terminal device provided in an embodiment of the present invention；

Fig. 9 is the configuration diagram of emitter provided in an embodiment of the present invention；

Figure 10 is a kind of schematic diagram for realizing block diagram of emitter provided in an embodiment of the present invention；

Figure 11 is another schematic diagram for realizing block diagram of emitter provided in an embodiment of the present invention；

Figure 12 is the configuration diagram of receiver provided in an embodiment of the present invention；

Figure 13 is a kind of schematic diagram for realizing block diagram of receiver provided in an embodiment of the present invention；

Figure 14 is another schematic diagram for realizing block diagram of receiver provided in an embodiment of the present invention.

Embodiment

The term that embodiments of the present invention part is used is only used for explaining the specific embodiment of the present invention, rather than It is intended to limit the present invention.

First, first combine Figure 1A -1F introduce the present embodiments relate to several possible application scenarios.It is specific as follows：

As shown in Figure 1A, in the application of enhanced mobile broadband (Enhanced Mobile Broadband, eMBB) business In scene, in order to realize more flexible resource distribution, generally using sub-band levels multicast/multicast single-frequency network network of extension (Multimedia Broadcast multicast service Single Frequency Network, MBSFN).Due to Multicast/multicast needs to carry out signal coverage enhancement, therefore, and MBSFN and single cell transmission channel use different OFDM Numerology (one group of setting value being made up of OFDM CP length and subcarrier width) carries out data transmission.For example, MBSFN resists longer channel delay time using extension CP in existing system.The feelings coexisted in a variety of OFDM Numerology Under condition, communication system can handle effectively limitation band external leakage by pulse-shaping, reduce the interference and reduction between resource block Expense of protection band etc..

As shown in Figure 1B, in scheduling of resource, different OFDM Numerology user equipment (User Equipment, UE the diverse location of resource block can) be assigned to.User in resource block sideband (or near) is compared in resource block The user in portion (i.e. not close to sideband), generally meets with the interference between serious sub-band.For resource block sideband (or near) User, can reduce the interference that the user is subjected to by pulse-shaping processing.

As shown in Figure 1 C, communication system can adjust modulation and coding strategy in real time according to channel quality information (Modulation and Coding Scheme, MCS).It should be understood that the higher transmission signal of order of modulation is to signal to noise ratio Requirement it is higher.Under high order modulation and coding strategy, the transmission for causing higher modulation order can be handled by pulse-shaping Signal can also obtain preferable signal to noise ratio.

As shown in figure iD, resisting some frequency-selective channels, (channel delay spread length is less than CP length to existing CP-OFDM Degree) when have some superiority, still, declined if there is serious time-frequency, immediately partially and channel delay spread length more than CP or Person's Doppler shift/mutually make an uproar is relatively strong, then communication performance deep fades.Under this channel condition, can be by pulse-shaping at Manage to improve the reliability of signal transmission.

As referring to figure 1E, flexibly switch from complete time division duplex (Time Division Duplexing, TDD) frame knot Structure causes extensive concern in 5G Communication Studies.It is this can be in same tdd frame from complete tdd frame structure technology In realize downstream transmission and being switched fast of confirming, can effectively reduce propagation delay time and design that provide can for flexible frame structure Energy.Generally, position of the symbol in this frame structure can be defined as four kinds of shapes：Frame head (type1), postamble (type2), frame First and postamble (type3), frame in portion (type4).For in frame is first and/or symbol of postamble, can be by pulse-shaping at Manage to reduce it because the interference that fading channel, asynchronous and Jitter are brought.

As shown in fig. 1F, different physical channels coexists, for example Physical Random Access Channel (Physical Random Access Channel, PRACH) and Physical Uplink Shared Channel (Physical Uplink Shared Channel, PUSCH) Coexist, wherein, compared to PUSCH, PRACH needs to support longer multi-path delay spread and higher anti-asynchronous ability, therefore, For PRACH, robustness inclined during anti-symbol level can be realized by pulse-shaping processing.For example, the corresponding arteries and veins of wave filter Length is rushed equivalent to multiple symbol periods.

Explanation is needed, the embodiment of the present invention can also need to improve the communication scenes of communication performance for other, here not Repeat.

Need explanation, the present embodiments relate to pulse-shaping refer to meet in ofdm system described by following formula Transmission signal s (t) sub-wave length filter (i.e. for the filtering of subcarrier), or the also known as pulse-shaping of ofdm signal：

S (t)=∑_m∑_na_m,ng_TX(t-nT)^2πjmFT

Wherein, s (t) is the transmission signal of ofdm system, a_m,nIt is the data in m-th of subcarrier and nth symbol, T is OFDM symbol cycle, F is OFDM subcarrier spacing, g_TXRepresent that transmitting terminal waveform or (prototype) send pulse.With g_TXRelative Receiving terminal waveform or (prototype) receive pulse and can represent to turn into γ_RX.In existing CP-OFDM systems, transmitting terminal waveform g_TX With receiving terminal waveform γ_RXAcquiescence is fixed as rectangular shape.

In order to solve existing ofdm communication system because of problem, this hair caused by the fixed progress pulse-shaping using rectangular window Bright embodiment provides filter optimization method, wave filter collocation method, relevant device and system, can be achieved by wave filter Optimize and configure to improve communication performance, the different communication scenes to support.This is described in detail below in conjunction with accompanying drawing Filter optimization method, wave filter collocation method, relevant device and system that inventive embodiments are provided.

It is the schematic flow sheet of filter optimization method provided in an embodiment of the present invention referring to Fig. 2.As shown in Fig. 2 the party Method includes：

S101, reveals ratio according to target adjacent channel and requires, determines that meeting the target adjacent channel leakage ratio requires Transmitting filter coefficient

S103, according to channel statistic H and meets target adjacent channel leakage than requiringCalculate So that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientWherein, channel statistic, hair Send filter coefficient g_TX, and receiving filter coefficient gamma (t)_RX(t) it is to determine the receiving terminal Signal to Interference plus Noise Ratio SINR_RXChange Amount.

S105, the preferred receiving filter coefficient is approached using known window functionObtain with it is described preferably Receiving filter coefficientApproximate receiving filter coefficientIt is describedFor configuring receiving terminal filtering Device.

In the embodiment of the present invention, transmitting filter coefficient g_TX(t), receiving filter coefficient gamma_RX(t) can be by making a reservation for The pulse parameter of justice is characterized.The pulse parameter includes：The all or part of parameter preset set.

Specifically, the parameter preset set can be as shown in table 1：

Table 1

Wherein, α represents the rolloff-factor of raised cosine (Raised Cosine, RC) wave filter；N_CPIt is OFDM cyclic prefix Length, N_symIt is the corresponding sampled point number of single symbol period.Explanation is needed, table 1 is only one kind of the embodiment of the present invention Restriction can should not be constituted with difference in implementation, practical application.

In the embodiment of the present invention, the parameter preset set can also include the predefined OFDM parameters of some systems, example Such as N_CPAnd N_sym, or other specification, it is not restricted here.

As described in " definition " in table 1, the first flag bit Flag_headMay be used to indicate symbol head whether do pulse into Type, the second flag bit Flag_tai1It may be used to indicate whether symbol afterbody does pulse-shaping, the first numerical value of N₁It may be used to indicate single Do pulse-shaping in symbol and amplitude weight be not equal to 1 sample point number, second value N₂It may be used to indicate single symbol The number of the outer sample point for doing pulse-shaping, P_typeThe shape of pulse to be configured is may be used to indicate, K may be used to indicate arteries and veins to be configured Rush the length relative to single symbol period.

In some possible implementations, if the first flag bit Flag_headIt is equal to the first enable value, then described First flag bit Flag_headRepresent that pulse-shaping is done on symbol head, otherwise represent that pulse-shaping is not done on symbol head.For example, such as Shown in table 1, the first flag bit Flag_headIt is the flag bit of 1 bit, the first enable value is 1.So, when Flag_headDuring equal to 1, represent that pulse-shaping is done on symbol head；Work as Flag_headDuring equal to 0, represent symbol head do not do pulse into Type.Example is only that can should not constitute restriction with difference in a kind of embodiment of the embodiment of the present invention, practical application.

Likewise, in some possible implementations, if the second flag bit Flag_tailEnabled equal to second It is worth, then the second flag bit Flag_tailRepresent symbol afterbody do pulse-shaping, otherwise represent symbol afterbody do not do pulse into Type.

Explanation is needed, the first enable value, the second enable value can be defined according to the actual requirements, not made here Limitation.

In the embodiment of the present invention, set of pulses parameter, such as (N_CP, N₁, N₂), it can correspond to and characterize a specific pulse form Shape, i.e. filter coefficient (the also known as form factor of wave filter).Also, the performance of a wave filter is generally by wave filter correspondence Pulse shape determine.Therefore, often there is a wave filter with preferable pulse shape more preferable limitation out-of-band power to let out Dew, the ability for improving Signal to Interference plus Noise Ratio etc..

The optimization process of receiving filter coefficient and transmitting filter coefficient is described in detail in terms of two separately below.

In a first aspect, the optimization process on receiving filter coefficient：, can in the case where transmitting filter coefficient is determined It is main to maximize receiving terminal Signal to Interference plus Noise Ratio SINR_RXFor the purpose of optimize receiving filter coefficient.It is as follows：

Specifically, so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientIt can be calculated by following Method one is represented：

Wherein, the channel statistic, such as delay spread and Doppler shift, can be by scattering function of channel H Characterize；The receiving terminal Signal to Interference plus Noise Ratio SINR_RXCan be by channel statistic H, transmitting filter coefficient g_TX(t), and described connect Receive filter coefficient γ_RX(t) determine, be represented by SINR_RX{H,g_TX(t),γ_RX(t)}。

It should be understood that adjacent channel leakage is than ACLR and transmitting filter coefficient g_TX(t) it is related, it can be expressed as hereTherefore, required for target adjacent channel leakage ratio, for exampleIt can solve full The foot requirement

In the specific implementation, base station can be selected from the corresponding pulse parameter table of known window function and meet the target Adjacent channel leakage is characterized than desired set of pulses parameterFor example, the corresponding pulse parameter table of raised cosine windows Can be such as (the Flag of table 2_tail=1, Flag_head=1) shown, wherein, table 2 provides several CP length and its corresponding N₁And N₂Model Enclose.

N_CP	N₁	N₂
			36	12~16	12~14
72	30~32	24~30
			144	60~64	40~60

Table 2

Explanation is needed, table 2 is used only for explaining the embodiment of the present invention, should not constitute restriction.

In the solution procedure of above-mentioned algorithm one, due to channel statistic H, it is known that and transmitting filter coefficient g_TX (t) it is equal toIt therefore, it can solve and meet above-mentioned algorithmIn other words, in transmitting filter and channel Under conditions of characteristic is determined, can theoretically it obtain so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum receiving filter coefficient, I.e.

The preferred receiving filter coefficient calculated in theory for practical application is (i.e.), it is possible to use Known window function goes what is calculated on approximation theoryIt is final to obtain and the preferred receiving filter coefficient Approximate sub-optimal receiver filter coefficient

It is assumed that the known window function is raised cosine (RC) wave filter.It is possible to be asked by way of norm regularization Solve withThe sub-optimal receiver filter coefficient infinitely approachedFor example Example is only that other Algorithm for Solving can also be used in a kind of implementation of the embodiment of the present invention, practical application, not answer structure Into restriction.

Approximation can also meet error in certain limit

For example, as shown in figure 3, being the transceiving filter waveform in communication system known to the characteristic of channel.Wherein, It is the raised cosine windows of transmitting terminal, its corresponding pulse parameter is：N1=0, N2=16's；It is by above-mentioned algorithm The one obtained preferred receiving filter coefficient；It is to be approached using raised cosine windowsWhat is obtained is described Receiving filter coefficient,Corresponding pulse parameter is：N1=16, N2=0.

Explanation is needed, the known window letter for approaching the preferred receiving filter coefficient is used in practical application Number can also be Gauss function, rectangular window function etc., not be restricted here.

Second aspect, the optimization process on transmitting filter coefficient：According to the receiving filter coefficientEnter one The optimization transmitting filter coefficient g of step_TX(t)；Specifically, in γ_RX(t) it is equal toIn the case of, can mainly it maximize Transmitting terminal Signal to Interference plus Noise Ratio SINR_TXFor the purpose of optimize transmitting filter coefficient.It is as follows：

Specifically, so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum preferred transmitting filter coefficientCan be by following Algorithm two is represented：

Therefore, in the channel statistic H, it is known that and receiving filter coefficient gamma_RX(t) it is equal toCondition Under, it can solve and meet above-mentioned algorithm

Likewise, the preferred transmitting filter coefficient calculated in theory for practical application is (i.e.), It can go what is calculated on approximation theory using known window functionIt is final to obtain and the preferred transmitting filter CoefficientApproximate transmitting filter coefficientHere can be byReferred to as transmitting filter coefficient.On obtainingApproach method refer to foregoing obtainProcess, do not repeat here.

It should be understood thatIt may be implemented in transmitting filter g_TX(t) under conditions of determining, maximum receiving terminal is obtained Signal to Interference plus Noise Ratio SINR_RX, improve the demodulation performance of communication system；It may be implemented in receiving filter γ_RX(t) it is equal toUnder conditions of, obtain maximum transmitting terminal Signal to Interference plus Noise Ratio SINR_TX, further increase the demodulation performance of communication system.

Filtered as shown in figure 4, the embodiment of the present invention can also be sent by iterative optimization process come laddering optimization Device coefficient g_TX(t) with receiving filter coefficient gamma_RX(t).Wherein：

Assuming that the i-th wheel iteration is to be directed to transmitting filter coefficient g_TX(t) optimization process.In i-th takes turns, theoretically count Obtained preferred transmitting filter coefficient isThe transmission filter for using actual window function obtain after close approximation Ripple device coefficient is

So, i+1 wheel iteration can be directed to receiving filter coefficient gamma_RX(t) optimization process.Specifically include：

First, it can theoretically be calculated by following algorithms and obtain preferred receiving filter coefficient Wherein, H is that the set channel statistical is special Property, i is positive integer；

It is then possible to which using known actual window function, such as RC window functions go what is calculated on approximation theoryFinally give receiving filter coefficient

It may infer that, ensuing i-th+2 wheel iteration can be directed to transmitting filter coefficient g_TX(t) again Optimization process.Specifically include：

First, it can theoretically be calculated by following algorithms and obtain preferred transmitting filter coefficient Wherein, H is the set channel statistic, i It is positive integer；

The like, follow-up (after the i-th+2 wheel) iterative process refers to foregoing (before the i-th+2 wheel), and iterative process is repeatedly Perform, do not repeat here.

Implement the embodiment of the present invention, under the conditions of known to transmitting filter coefficient, dry make an uproar is believed by maximizing receiving terminal Than to obtain preferred receiving filter coefficient, and go to approach the preferred receiving filter coefficient using known window function, The be actually used in receiving filter coefficient that configuration receive end filter approximate with its is finally given, the letter of receiving terminal is improved Dry ratio of making an uproar, improves demodulation performance；Then the receiving filter coefficient obtained according to optimization, dry make an uproar is believed by maximizing transmitting terminal Preferred transmitting filter coefficient is obtained than further, and the preferred transmission filtering is approached using known window function Device coefficient, so that the transmitting filter coefficient that is actually used in configuration sending filter approximate with its, further to improve The Signal to Interference plus Noise Ratio of transmitting terminal, improves demodulation performance.

Wave filter collocation method provided in an embodiment of the present invention is described below.The wave filter collocation method can be used for will The filter coefficient that the corresponding filter optimization method of Fig. 2 embodiments is obtained, i.e., the pulse of the one group sign filter coefficient Parameter, is allocated to wave filter.The wave filter collocation method is described in detail with reference to Fig. 5-6.

It is the schematic flow sheet of wave filter collocation method provided in an embodiment of the present invention referring to Fig. 5.As shown in figure 5, described Method may include：

S201, if present communications scene belong to it is default the need for carry out the communication scenes of pulse-shaping processing, base station The pulse to be configured for the present communications scene can be determined.

S203, terminal device is used for the arteries and veins that instruction terminal equipment is supported to base station send configuration information, the configuration information Rush shape.Specifically, the pulse shape that terminal device is supported may include：Raised cosine pulse, Gaussian pulse, rectangular pulse etc..

S205, accordingly, base station receive the configuration information of terminal device transmission.Also, base station can be according to institute Configuration information is stated, judges whether terminal device supports the pulse to be configured, and judges whether to need to do in terminal equipment side Pulse-shaping processing.

S207, if base station judges that terminal device supports the pulse to be configured, and judges to need to set in terminal Pulse-shaping processing is done in standby side, then base station can notify the pulse parameter of the pulse to be configured to terminal device.Specifically, The pulse parameter can be used for the filter coefficient for configuring the terminal device.

If it should be understood that the terminal device acquiescence support pulse shape it is enough, can coverage base station may The pulse shape of configuration, then S203 is not the necessary step of the embodiment of the present invention, and accordingly, base station is sentenced also without in S205 Whether the terminal device that breaks supports the pulse to be configured.

Explanation is needed, S203 is not limited to after S201.I.e.：Terminal device can send the configuration to base station at any time Information, the communication scenes that progress pulse-shaping processing the need for presetting whether can not be belonged to by present communications scene are limited.

In the embodiment of the present invention, it is described it is default the need for carry out the communication scenes of pulse-shaping processing and may include but do not limit In：Communication scenes shown in Figure 1A -1F.Specifically it may include：The communication scenes belong to it is default the need for limit out-of-band power and let out The scene of dew, terminal device are scheduled in different OFDM Numerology and (are made up of OFDM CP length and subcarrier width One group of setting value) the resource edge, the terminal device that coexist set using the modulating-coding strategy of high order modulation or high-order, terminal Standby current corresponding time-frequency decline reach the corresponding resource location of predeterminable level, terminal device be in data frame frame head and/or The physical channel that postamble, terminal device are presently in is one in the communication scenes such as physical channel of pulse-shaping the need for presetting Plant or several.

Explanation is needed, in practical application, the default scene, which may also include other, to be needed to carry out pulse-shaping processing Communication scenes, are not restricted here.

In the embodiment of the present invention, after judging that the present communications scene needs progress pulse-shaping processing, base station Can determine whether it is to need to carry out pulse-shaping processing in transmitting terminal, it is desired nonetheless to carry out pulse-shaping processing in receiving terminal, Or need all to carry out pulse-shaping processing in transmitting-receiving two-end.

In a kind of possible implementation, base station can be according to the demodulation performance of receiving terminal, the coding of signal and modulation Exponent number etc. come judge whether need receiving terminal carry out impulse modulation.

If for example, the demodulation performance of receiving terminal is relatively low, judging to need to carry out impulse modulation in receiving terminal, to improve The Signal to Interference plus Noise Ratio of receiving terminal, improves demodulation performance.

In another example, the requirement due to the higher transmission signal of order of modulation to signal to noise ratio is higher, therefore, if the tune of signal Exponent number processed is higher, then can be determined that needs carry out impulse modulation in receiving terminal, to improve Signal to Interference plus Noise Ratio, it is ensured that transmission performance.

Example is only that can should not constitute limit with difference in a kind of implementation of the embodiment of the present invention, practical application It is fixed.

In a kind of possible implementation, base station can according to the requirement of the type of service, communication scenes of transmission services, Expense of protection band etc. come judge whether need transmitting terminal carry out impulse modulation.

If for example, transmission services are uMTC business, judging to need to carry out impulse modulation in transmitting terminal, to ensure to pass The reliability of defeated signal.

In another example, if present communications scene carries out pulse modulated scene the need for belonging to foregoing preset, judge to need Impulse modulation, the communication performance to improve the present communications scene are carried out in transmitting terminal.

If for another example the expense of the protection band between different user is larger, judging to need to enter horizontal pulse tune in transmitting terminal System, the expense to reduce protection band.

Explanation is needed, base station can also judge to need to carry out at which end according to predefined wave filter configuration strategy Pulse-shaping processing.

For example, the out-of-band power leakage index of pre-defined multiple grades；If outside the band under the present communications scene Power leakage is then demonstrated the need for carrying out pulse-shaping processing in transmitting-receiving two-end, is used to higher than the first leakage index (height is revealed) Limitation out-of-band power leakage to the full extent, it is ensured that communication performance；If the out-of-band power under the present communications scene is let out Dew then demonstrates the need for carrying out pulse-shaping processing in transmitting terminal, to reduce hair in the second leakage index (moderate leakage) Interference of the sending end to other users；If the out-of-band power leakage under the present communications scene is (light less than the 3rd leakage index Degree leakage) in, then show that only pulse-shaping processing, interference of the reduction other users to receiving terminal can be carried out in receiving terminal.

Explanation is needed, base station can also judge to need to carry out pulse-shaping processing in that one end according to other strategies, The embodiment of the present invention is not restricted.

It should be understood that during uplink, if it is judged that needing to carry out impulse modulation in transmitting terminal, then showing Need to carry out impulse modulation in terminal equipment side, the pulse parameter of the pulse to be configured can be used for the transmission of configurating terminal device Wave filter；In downlink transmission process, if it is judged that needing to carry out impulse modulation in receiving terminal, then also indicate that needs in terminal Equipment side carries out impulse modulation, then the pulse parameter of the pulse to be configured can be used for the receiving filter of configurating terminal device.

It should be understood that during uplink, if it is judged that needing to carry out impulse modulation in receiving terminal, then showing Need to carry out impulse modulation in base station side, the pulse parameter of the pulse to be configured can be used for the receiving filter of configuration base station； In downlink transmission process, if it is judged that needing to carry out impulse modulation in transmitting terminal, then also indicate that needs are carried out in base station side Impulse modulation, then the pulse parameter of the pulse to be configured is available for the transmitting filter for configuring base station.

In the embodiment of the present invention, the pulse parameter may include：The all or part of parameter preset set.

Specifically, the parameter preset set refers to table 1 and related content in Fig. 2 embodiments, no longer go to live in the household of one's in-laws on getting married here State.

In the embodiment of the present invention, set of pulses parameter correspondence characterizes a specific pulse shape.Such as " definition " in table 1 It is described, the first flag bit Flag_headIt may be used to indicate whether symbol head does pulse-shaping, the second flag bit Flag_tai1It can be used for Whether designated symbol afterbody does pulse-shaping, the first numerical value of N₁It may be used to indicate and pulse-shaping and amplitude weight are done in single symbol It is not equal to the number of 1 sample point, second value N₂The number that single outer symbol does the sample point of pulse-shaping is may be used to indicate, P_typeThe shape of pulse to be configured is may be used to indicate, K may be used to indicate length of the pulsion phase to be configured for single symbol period.

In the embodiment of the present invention, the different communication scenes for needing to carry out pulse-shaping processing can correspond to difference Pulse to be configured (i.e. different pulse parameters).As shown in table 3, it is to need treating corresponding to scene of the limitation with outward leakage to match somebody with somebody Put pulse：

	N_CP	N₁	N₂
				Short CP	144	20~72	16~72
Long CP	512	60~256	40~256

Table 3

In one implementation, for the different communication scenes for needing to carry out pulse-shaping processing, Ke Yitong The filter optimization method of Fig. 2 embodiments description is crossed to obtain each self-corresponding arteries and veins to be configured of the different communication scenes The pulse parameter (i.e. filter coefficient) of punching.

, can be with for the different communication scenes for needing to carry out pulse-shaping processing in another implementation Pre-set each self-corresponding pulse to be configured of the different communication scene.

For example, by needing the corresponding pulse to be configured such as table 2 of scene of the limitation with outward leakage described in agreement static defining It is shown.Example is only that can should not constitute restriction with difference in a kind of implementation of the embodiment of the present invention, practical application.

In the embodiment of the present invention, the pulse parameter of the pulse to be configured can be led to by following several implementations Know to terminal device：

, will be described in the first implementation, it is possible to use the dynamic signaling with the fixed cycle, such as RRC signaling Pulse parameter is notified to the terminal device.

In second of implementation, it is possible to use real-time dynamic signaling, such as dispatch, by the pulse parameter Notify to the terminal device.

In the third implementation, the corresponding pulse to be configured of different communication scenes can be fixed by agreement static state Justice, therefore, terminal device is by judging that the shape of present communications scene would know that present communications scene is corresponding to be configured Parameter.For example, being used to characterize the field of the needs limitation with outward leakage by the pulse parameter shown in agreement static defining table 3 Pulse to be configured corresponding to scape.Example is only can not also in a kind of implementation of the embodiment of the present invention, practical application Together, restriction should not be constituted.

In the embodiment of the present invention, if notifying parameter to be configured described in terminal device by signaling, then：

In one implementation, the pulse parameter can be directly carried in the signaling；Terminal device can be direct Device configuration is filtered according to the pulse parameter.

In another implementation, the signaling can also carry the configured information of the pulse parameter；Terminal device Need according to the configured information, determine the pulse parameter that the configured information is indicated, and then carry out according to the pulse parameter Wave filter is configured.

For example, the configured information of the pulse parameter is pulse shape, wherein, the corresponding pulse parameter of the pulse shape Provided via preset protocol；So, terminal device can know the corresponding pulse parameter of the pulse shape according to agreement.

In another example, the configured information of the pulse parameter is index of the pulse to be configured in presetting database, its In, terminal equipment side is able to access that the presetting database；So, terminal device can be found from the presetting database The corresponding pulse parameter of the index.

Implement the embodiment of the present invention, carried out the need for default under the communication scenes of pulse-shaping processing, by be configured The pulse parameter of pulse configures the wave filter of transmitting terminal and/or receiving terminal, can improve the communication performance of whole communication system, example Such as reduce out-of-band power leakage, improve Signal to Interference plus Noise Ratio, reduction interference.

It is a kind of structural representation of communication network device provided in an embodiment of the present invention referring to Fig. 6.The communication network Equipment can be used for the filter optimization method for performing the description of Fig. 2 embodiments.As shown in fig. 6, communication network device 60 may include：Really Order member 601, the first computing unit 603 and the first approximating unit 605, wherein：

Determining unit 601, requires for revealing ratio according to target adjacent channel, is let out it is determined that meeting the target adjacent channel Reveal the transmitting filter coefficient than requiring

First computing unit 603, for being required according to channel statistic H with the target adjacent channel leakage ratio is met 'sCalculate so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientWherein, Channel statistic, transmitting filter coefficient g_TX, and receiving filter coefficient gamma (t)_RX(t) it is to determine the receiving terminal letter Dry make an uproar compares SINR_RXVariable；

First approximating unit 605, for approaching the preferred receiving filter coefficient using known window function Obtain and the preferred receiving filter coefficientApproximate receiving filter coefficientIt is describedFor with Put reception end filter.

In the embodiment of the present invention, the pulse parameter can be all or part of parameter preset set.Specifically, described Parameter preset set refers to table 1 and related content in Fig. 2 embodiments, repeats no more here.

In the embodiment of the present invention, the first computing unit 603 can be specifically for being obtained so that receiving terminal is believed by following algorithms Dry make an uproar compares SINR_RXMaximum preferred receiving filter coefficient

Wherein, g_TX(t) it is equal to

Specifically, the related content referred in Fig. 2 embodiments of the method is implemented on the first computing unit 603, Here repeat no more.

As shown in fig. 6, communication network device 60 can also further comprise：Second computing unit 607 and the second approximating unit 609, wherein：

Second computing unit 607, for according to the channel statistic H and describedCalculate so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum preferred transmitting filter coefficientWherein, channel statistic, the transmitting filter Coefficient g_TX, and the receiving filter coefficient gamma (t)_RX(t) it is to determine the transmitting terminal Signal to Interference plus Noise Ratio SINR_TXVariable；

Second approximating unit 609, for approaching the preferred transmitting filter coefficient using known window functionObtain and the preferred transmitting filter coefficientApproximate transmitting filterIt is describedFor Configure sending filter.

In the embodiment of the present invention, the second computing unit 607 can be specifically for being obtained so that transmitting terminal is believed by following algorithms Dry make an uproar compares SINR_TXMaximum preferred transmitting filter coefficient

Wherein, γ_RX(t) it is equal to

Specifically, the related content referred in Fig. 2 embodiments of the method is implemented on the second computing unit 607, Here repeat no more.

Further, communication network device 60 may also include：Iterative optimization unit.The iteration unit can be used for：It is logical Cross iterative optimization process and carry out laddering optimization transmitting filter coefficient g_TX(t) with receiving filter coefficient gamma_RX(t)；Its In：

In i+1 wheel, preferred receiving filter coefficient is calculated by following algorithms Wherein, g_TX(t) it is equal to It is obtaining with preferred transmitting filter coefficient in being taken turns i-thApproximate transmitting filter coefficient,It is to calculate obtaining so that transmitting terminal Signal to Interference plus Noise Ratio SINR in being taken turns i-th_TXMaximum preferred transmitting filter coefficient；

Or, in i+1 wheel, preferred transmitting filter coefficient is calculated by following algorithms Wherein, γ_RX(t) it is equal toBe It is obtaining with preferred receiving filter coefficient in i-th wheelApproximate receiving filter coefficient,It is in i-th takes turns Calculate obtaining so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficient；

Wherein, i is positive integer.

Specifically, on the iteration unit implement refer to related content in Fig. 2 embodiments of the method and Fig. 4, is repeated no more here.

It should be understood that implementing for the functional unit that communication network device 60 includes refers to Fig. 2 embodiments of the method Content, repeat no more here.

It is a kind of structural representation of base station provided in an embodiment of the present invention referring to Fig. 7.As shown in fig. 7, base station 70 can be wrapped Include：Determining unit 701, receiving unit 703, judging unit 705 and notification unit 707, wherein：

Determining unit 701, if for present communications scene belong to it is default the need for carry out the communication of pulse-shaping processing Scene, then to be configured pulse of the base station determination for the present communications scene；The pulse to be configured is by set of pulses parameter Characterize；

Receiving unit 703, the configuration information sent for receiving terminal apparatus, the configuration information is used to indicate the end The pulse shape that end equipment is supported；

Judging unit 705, for judging whether the terminal device supports the arteries and veins to be configured according to the configuration information Punching, and judge whether to need to do pulse-shaping processing in terminal equipment side；

Notification unit 707, if show that the terminal device supports the pulse to be configured for the configuration information, and And judge to need to do pulse-shaping processing in terminal equipment side, then the pulse parameter by the pulse to be configured is notified to terminal Equipment；The pulse parameter is used for the filter coefficient for configuring the terminal device.

Specifically, it is described it is default the need for carry out the communication scenes of pulse-shaping processing and may be referred to Fig. 5 embodiments of the method In content, repeat no more here.

Specifically, the pulse parameter can be all or part of parameter preset set.Specifically, the parameter preset Set refers to table 1 and related content in Fig. 2 embodiments, repeats no more here.

Specifically, judging unit 705 can be specifically for：Wanted according to the type of service of transmission services, the default of communication scenes Ask, in the expense of protection band at least one of judge whether to need to carry out impulse modulation in transmitting terminal.

Specifically, judging unit 705 can be specifically for：：According to the demodulation performance of receiving terminal, the coding of signal and modulation In exponent number at least one of come judge whether need receiving terminal carry out impulse modulation.

Further, base station 70 may also include：Dispensing unit, for doing pulse-shaping processing in base station side if desired, Then according to the pulse parameter of the pulse to be configured, the filter coefficient of the base station side is configured；The pulse parameter is used to match somebody with somebody Put the filter coefficient of the base station.

Specifically, notification unit 707 can be specifically for：Using the dynamic signaling with the fixed cycle, the pulse is joined Number is notified to the terminal device；Or, using real-time dynamic signaling, the pulse parameter is notified to set to the terminal It is standby.

In the specific implementation, the signaling can directly carry the pulse parameter of the pulse to be configured, the signaling can also Carry the configured information of the pulse to be configured.

It should be understood that implementing for the functional unit that base station 70 includes refers to base described in Fig. 5 embodiments of the method The function of standing, is repeated no more here.

It is corresponding with base station 70, a kind of terminal device that the embodiment of the present invention is also provided.

It is a kind of structural representation of base station provided in an embodiment of the present invention referring to Fig. 8.As shown in figure 8, terminal device 80 It may include：Transmitting element 801, receiving unit 803 and dispensing unit 805, wherein：

Transmitting element 801, for base station send configuration information, the configuration information to be used for what instruction terminal equipment was supported Pulse shape；

Receiving unit 803, the pulse parameter of the pulse to be configured for receiving base station notice；

Dispensing unit 805, for configuring filter coefficient according to the pulse parameter of the pulse to be configured.

In the embodiment of the present invention, whether the pulse shape that the terminal device is supported may be used to indicate out the terminal device Support the corresponding pulse to be configured of present communications scene；The present communications scene belong to it is default the need for carry out pulse into The communication scenes of type processing.It is described it is default the need for carry out the communication scenes of pulse-shaping processing and may be referred to the implementation of Fig. 5 methods Content in example, is repeated no more here.

Specifically, receiving unit 803 can be specifically for：Receive the dynamic signaling with the fixed cycle that base station is sent, institute State the pulse parameter that the dynamic signaling with the fixed cycle is used to notify the pulse to be configured；Or, receive what base station was sent Real-time dynamic signaling, the real-time dynamic signaling is used for the pulse parameter for notifying the pulse to be configured.

It should be understood that implementing for the functional unit that terminal device 80 includes refers to institute in Fig. 5 embodiments of the method The function of terminal device is stated, is repeated no more here.

For the ease of realizing above-mentioned wave filter collocation method, a kind of emitter is provided below and a kind of framework of receiver shows It is intended to.Specifically, during uplink communication, the emitter can be integrated in terminal device, the receiver can be integrated in In base station；During downlink communication, the emitter can be integrated in base station, and the receiver can be integrated in terminal device It is interior.

It is a kind of configuration diagram of emitter provided in an embodiment of the present invention referring to Fig. 9.The emitter is used in hair Penetrate end and pulse-shaping processing is carried out to transmission signal.As shown in figure 9, emitter 10 may include：Pulse-shaping controller 101, arteries and veins Mode filter 102, Fourier inversion (IFT) 103 and parallel-serial conversion (P/S) module 104 are washed into, wherein：

Fourier inversion module 103 can be used for：Fourier inversion is carried out to the baseband modulation signal after serioparallel exchange, And by the signal output after conversion to Pulse shaped filter 102；

Pulse-shaping controller 101 can be used for：Pulse configuration signaling is received, is generated according to the pulse configuration signaling and waits to match somebody with somebody The corresponding pulse parameter of pulse is put, and the pulse parameter is exported to Pulse shaped filter 102；Pulse shaped filter 102 can be used for：Output signal for Fourier inversion module 103 carries out sub-wave length filtering, according to the pulse parameter Output signal to the Fourier inversion module 103 carries out pulse-shaping processing；And by the signal output after processing to P/S Module 104；

P/S modules 104 are used for：By by the signal Serial output after Pulse shaped filter processing.

The side of implementing of emitter 10 provided in an embodiment of the present invention is further illustrated below according to Figure 10 and Figure 11 Formula.Wherein：The corresponding emitters 10 of Figure 10 are preferably applied in the scene of the length of pulse shape smaller (K≤2 as described), figure 11 corresponding emitters 10 are preferably applied in as the larger (K as described of the length of pulse shape>2) in scene.

In a kind of implementation of the embodiment of the present invention, emitter 10 can be as shown in Figure 10.Wherein：Fourier inversion Module 103, parallel-serial conversion (P/S) module 104 and pulse-shaping controller 101 are consistent with the corresponding module in Fig. 9 embodiments, no Repeat again；Pulse shaped filter 102 can further comprise as shown in Figure 10：Add module 1021, adding window module 1023, calculating Module 1025 and memory module 1027.

In the first flag bit Flag_headUnder conditions of the first enable value (as " 1 "), add module 1021 plus Window module 1023 and computing module 1025 can be provided commonly for the OFDM symbol of the output signal to Fourier inversion module 103 Head carries out pulse-shaping processing.Wherein：

Add module 1021 can be used for：For the OFDM symbol, the cyclic prefix of the first length is added；And will with the addition of The OFDM symbol of cyclic prefix is exported to adding window module 1023.

For example, as shown in Figure 10, first length can be equal to (N_CP+N₂).In practical application, first length N can be equal to_CPPlus N₂Integral multiple, such as (N_CP+2N₂), first length can also be other values, not limit here System.

Adding window module 1023 can be used for：For the head portion of the OFDM symbol, default windowed function (such as P is utilized_type The windowed function of instruction) first half, on M sampled point of the head portion, to the OFDM symbol carry out adding window Processing；And export the OFDM symbol after windowing process to computing module 1025；The M is positive integer.

For example, as shown in Figure 10, the M can be equal to (N₁+N₂).Need explanation, according to practical application request, the M It can also be other values, such as (N₁+2N₂), it is not restricted here.

Computing module 1025 can be used for：On X sampled point of the head portion of the OFDM symbol after windowing process, It is added using X sampled point of the tail portion of a upper OFDM symbol with the OFDM symbol；And it is described after will add up OFDM symbol is exported.The X is positive integer.Explanation is needed, the addition refers in time domain plus OFDM symbol X sampled point of tail portion.For example, as shown in Figure 10, the X is equal to 2N₂, its physical significance with reference to Fig. 3 understand, refer to by The sampled point that the tail portion of a upper OFDM symbol is overlapped with the OFDM symbol increases to the head of the OFDM symbol Portion part.

In the second flag bit Flag_tai1Under conditions of the second enable value (as " 1 "), add module 1021 and plus The afterbody that window module 1023 can also be provided commonly for the OFDM symbol of the output signal to Fourier inversion module 103 enters horizontal pulse Forming processes.Wherein：

Add module 1021 can be used for：For the OFDM symbol, the cyclic suffix of the second length is added；And will with the addition of The OFDM symbol of cyclic suffix is exported to adding window module 1023.

For example, as shown in Figure 10, second length can be equal to N₂.In practical application, second length can also Equal to N_CPPlus N₂Integral multiple, such as (N_CP+2N₂), second length can also be other values, not be restricted here.

Adding window module 1023 can be used for：The tail portion of the OFDM symbol exported for add module 1021, is utilized Default windowed function (such as P_typeThe windowed function of instruction) latter half, on N number of sampled point of the tail portion, to institute State OFDM symbol and carry out windowing process；And export the OFDM symbol after windowing process；The N is positive integer.

For example, as shown in Figure 10, the N can be equal to (N₁+N₂).Need explanation, according to practical application request, the N It can also be other values, such as (N₁+2N₂), it is not restricted here.

In addition, the memory module 1029 in emitter 10 shown in Figure 10 can be used for：By the OFDM after windowing process Y sampled point of the tail portion of symbol is saved in storage medium.In the specific implementation, Y can be equal to X, i.e., it is described upper one X sampled point of the tail portion of OFDM symbol can be stored in storage medium.In practical application, Y can also be more than X, this In be not restricted.

In the communication scenes in 5G and future, time division multiplexing (Time Division Duplexing, TDD) technology is needed Up-downgoing switching is more frequently carried out, usual switching cycle is less than 1 millisecond.Signal may in time domain when up-downgoing switches Signal leakage can occur because of system asynchronous, cause interfering between up-downgoing.Implemented by implementing the present invention Pulse-shaping processing is done in the afterbody of the last symbol of uplink frame respectively described in example, or at first of downlink frame Do pulse-shaping processing in the head of symbol, it is possible to achieve up-downgoing data frame takes over seamlessly, help improve up-downgoing interference.

In another implementation of the embodiment of the present invention, emitter 10 can be as shown in Figure 10.Wherein：Fourier's contravariant Change the mold block 103, parallel-serial conversion (P/S) module 104 and pulse-shaping controller 101 consistent with the corresponding module in Fig. 9 embodiments, Repeat no more；Pulse shaped filter 102 can include as shown in Figure 10：Multiphase bit register network, is used for：According to the length The K and shape P of the pulse to be configured_typeThe sending filter coefficient of determination, the output to Fourier inversion module 103 Signal carries out sub-wave length filtering, and filtered multiple subcarriers are exported to parallel serial conversion module 104.

Specifically, as shown in Figure 10, the depth of the multiphase bit register network is consistent with the length K.Described in one group Length K and P_typeSending filter coefficient g can be determined_tx.The input that multiphase bit register network shown in Figure 10 is received is The n roads signal of the output of Fourier inversion module 103.

In another implementation of the embodiment of the present invention, emitter 10 may include：Pulse in Figure 10 embodiments into Pulse shaped filter in mode filter and Figure 11 embodiments, the two wave filters with pulse-shaping controller 101, Fu Li Leaf inverse transform block 103 is connected.

In a kind of possible implementation, the Pulse shaped filter that Figure 10 and Figure 11 are distinguished in corresponding embodiment can To be two hardware modules, the two hardware module independences are integrated in emitter 10, and each with the pulse-shaping control Device processed is connected；In practical application, the two hardware modules can also be integrated in as a part for the pulse-shaping controller In the pulse-shaping controller, the embodiment of the present invention is not limited layout type of the two hardware modules on hardware structure System.

In alternatively possible implementation, the Pulse shaped filter in Figure 10 and the corresponding embodiment of Figure 11 difference Can be two software modules, the two software modules may operate in the pulse-shaping controller, can also operate in In other process chips that can be communicated with the pulse-shaping controller, fortune of the embodiment of the present invention to the two software modules Row environment is not restricted.

In another described implementation, pulse-shaping controller 101 can be additionally used in：Judge whether the length K is big In default value (such as 2), if it is greater, then the pulse parameter is exported to the Pulse shaped filter in Figure 10 embodiments, Pulse-shaping processing is carried out to transmission signal to trigger the Pulse shaped filter in Figure 10 embodiments；If less than or wait In then the pulse parameter being exported to the Pulse shaped filter in Figure 10 embodiments, to trigger in Figure 10 embodiments Pulse shaped filter carries out pulse-shaping processing to transmission signal.

It should be understood that the pulse parameter used in Figure 10 embodiments can be one of parameter preset set shown in Fig. 1 Subset, i.e. { N₁、N₂、Flag_head、Flag_tail}；The pulse parameter used in Figure 10 embodiments can be parameter preset shown in Fig. 1 Another subset of set, i.e. { K, P_type}。

In the embodiment of the present invention, the pulse configuration signaling that pulse-shaping controller 101 is received can be upper strata, for example The signaling that radio resource control layer (Radio Resource Control, RRC) is issued.In practical application, the pulse configuration Signaling can also be that application layer operates in response to user and is handed down to pulse-shaping controller 101.On pulse configuration letter The source of order and producing method, the embodiment of the present invention are not restricted.

It is a kind of configuration diagram of receiver provided in an embodiment of the present invention referring to Figure 12.As shown in figure 12, receiver 20 may include：Serioparallel exchange (S/P) module 204, Pulse shaped filter 202, pulse-shaping controller 201 and Fourier transformation Module 203, wherein：

S/P modules 204 can be used for：The transmission signal parallel of serial input is exported to Pulse shaped filter 202；

Pulse-shaping controller 201 can be used for：Pulse configuration signaling is received, is generated according to the pulse configuration signaling and waits to match somebody with somebody The corresponding pulse parameter of pulse is put, and the pulse parameter is exported to Pulse shaped filter 202；

Pulse shaped filter 202 can be used for：Output signal for S/P modules 204 carries out sub-wave length filtering, according to The pulse parameter carries out pulse-shaping processing to the output signal of S/P modules 204, and by the signal output after processing in Fu Leaf transformation module 203；

Fourier transformation module 203 can be used for：Fourier's change is carried out to the signal after Pulse shaped filter processing Change.

Explanation is needed, Figure 12 be illustrate only in the part framework of receiver 20, practical application, and receiver 20 can also be wrapped Including other is used for the module that signal demodulation signal is received, and does not repeat here.

In the embodiment of the present invention, pulse-shaping controller 201 exports the pulse parameter to Pulse shaped filter 202 It can be all or part of parameter preset set.Specifically, the parameter preset set refers to the table 1 in Fig. 2 embodiments And associated description, repeat no more here.

Describe the specific implementation of receiver 20 provided in an embodiment of the present invention in detail below according to Figure 13 and Figure 14. Wherein：The corresponding receivers 20 of Figure 13 are preferably applied in the scene of the length of pulse shape smaller (K≤2 as described), Figure 14 Corresponding receiver 20 is preferably applied in as the larger (K as described of the length of pulse shape>2) in scene.

In a kind of implementation of the embodiment of the present invention, receiver 20 can be as shown in figure 13.Wherein：Serioparallel exchange (S/ P) module 204, pulse-shaping controller 201 and fourier transformation module 203 are consistent with the corresponding module in Figure 12 embodiments, no Repeat again；Pulse shaped filter 202 can further comprise as shown in figure 13：Computing module 2021, adding window module 2023, removal Module 2025 and memory module 2027.

In the first flag bit Flag_headUnder conditions of the first enable value (as " 1 "), computing module 2021 plus Window module 2023 can be provided commonly for the head to the corresponding OFDM symbol of the output signals of S/P modules 204 with module 2025 is removed Carry out pulse-shaping processing.Wherein：

Computing module 2021 can be used for：For the head portion of the OFDM symbol, in X sampling of the head portion On point, the X sampled point using the tail portion of a upper OFDM symbol subtracts each other with the OFDM symbol；And the institute after subtracting each other OFDM symbol is stated to export to adding window module 2023.Wherein, the X is positive integer.Explanation is needed, described subtract each other refers in time domain On subtract a upper OFDM symbol tail portion X sampled point.For example, as shown in figure 13, the Y can be equal to 2N₂, its physical significance is understood with reference to Fig. 3, refers to subtract the upper OFDM symbols from the head portion of the OFDM symbol Number tail portion with from the OFDM symbol overlap sampled point.

Adding window module 2023 can be used for：The head portion of the OFDM symbol after for subtracting each other, utilizes default adding window letter Several first halfs, on M sampled point of the head portion, windowing process is carried out to the OFDM symbol；And by adding window The OFDM symbol after processing, which is exported, gives removal module 2025；The M is positive integer.

For example, as shown in figure 13, the M can be equal to (N₁+N₂).Need explanation, according to practical application request, the M It can also be other values, such as (N₁+2N₂), it is not restricted here.

Module 2025 is removed to can be used for：For the OFDM symbol after windowing process, before the circulation for removing the first length Sew；And exported the OFDM symbol after cyclic prefix is removed.

For example, as shown in figure 13, first length can be equal to (N_CP+N₂).In practical application, first length N can be equal to_CPPlus N₂Integral multiple, such as (N_CP+2N₂), first length can also be other values, not limit here System.

In the second flag bit Flag_tailUnder conditions of the second enable value (as " 1 "), adding window module 2023 and go Except module 2025 can be provided commonly for carrying out at pulse-shaping the afterbody of the corresponding OFDM symbol of output signal of S/P modules 204 Reason.Wherein：

Adding window module 2023 can be used for：For the tail portion of the OFDM symbol, the later half of default windowed function is utilized Part, on N number of sampled point of the tail portion, windowing process is carried out to the OFDM symbol；And by after windowing process The OFDM symbol is exported to the removal module；The N is positive integer.

For example, as shown in figure 13, the N can be equal to (N₁+N₂).Need explanation, according to practical application request, the N It can also be other values, such as (N₁+2N₂), it is not restricted here.

Module 2025 is removed to can be used for：For the OFDM symbol after windowing process, after the circulation for removing the second length Sew；And export the OFDM symbol for eliminating cyclic suffix.

For example, as shown in figure 13, second length can be equal to N₂.In practical application, second length can also Equal to N_CPPlus N₂Integral multiple, such as (N_CP+2N₂), second length can also be other values, not be restricted here.

In addition, the memory module 2027 in receiver 20 shown in Figure 13 can be used for：By the output signal of S/P modules 204 Y sampled point of the tail portion of corresponding OFDM symbol is saved in storage medium；The Y is positive integer.In the specific implementation, Y can be equal to X, i.e., X sampled point of the tail portion of a described upper OFDM symbol can be stored in storage medium.It is actual In, Y can also be more than X, not be restricted here.

In another implementation of the embodiment of the present invention, receiver 20 can be as shown in figure 14.Wherein：Serioparallel exchange (S/P) module 204, pulse-shaping controller 201 and fourier transformation module 203 are consistent with the corresponding module in Fig. 5 embodiments, Repeat no more；Pulse shaped filter 202 can include as shown in figure 14：Multiphase bit register network, is used for：According to the length The K and shape P of the pulse to be configured_typeThe receiving terminal filter coefficient of determination, the output signal to S/P modules 204 is carried out Sub-wave length is filtered, and filtered multiple subcarriers are exported to fourier transformation module 203.

Specifically, as shown in figure 14, the depth of the multiphase bit register network is consistent with the length K.Described in one group Length K and P_typeSending filter coefficient gamma can be determined_rx.The input that multiphase bit register network shown in Figure 14 is received is The n roads signal that S/P modules 204 are exported.

In another implementation of the embodiment of the present invention, receiver 20 may include：Pulse in Figure 13 embodiments into Pulse shaped filter in mode filter and Figure 14 embodiments, the two wave filters with pulse-shaping controller 201, Fu Li Leaf inverse transform block 203 is connected.

In a kind of possible implementation, the Pulse shaped filter that Figure 13 and Figure 14 are distinguished in corresponding embodiment can To be two hardware modules, the two hardware module independences are integrated in emitter 10, and each with the pulse-shaping control Device processed is connected；In practical application, the two hardware modules can also be integrated in as a part for the pulse-shaping controller In the pulse-shaping controller, the embodiment of the present invention is not limited layout type of the two hardware modules on hardware structure System.

In alternatively possible implementation, the Pulse shaped filter in Figure 13 and the corresponding embodiment of Figure 14 difference Can be two software modules, the two software modules may operate in the pulse-shaping controller, can also operate in In other process chips that can be communicated with the pulse-shaping controller, fortune of the embodiment of the present invention to the two software modules Row environment is not restricted.

In another described implementation, pulse-shaping controller 101 can be additionally used in：Judge whether the length K is big In default value (such as 2), if it is greater, then the pulse parameter is exported to the Pulse shaped filter in Figure 14 embodiments, Pulse-shaping processing is carried out to transmission signal to trigger the Pulse shaped filter in Figure 14 embodiments；If less than or wait In then the pulse parameter being exported to the Pulse shaped filter in Figure 13 embodiments, to trigger in Figure 13 embodiments Pulse shaped filter transmission signal carries out pulse-shaping processing.

It should be understood that the pulse parameter used in Figure 13 embodiments can be one of parameter preset set shown in Fig. 1 Subset, i.e. { N₁、N₂、Flag_head、Flag_tail}；The pulse parameter used in Figure 14 embodiments can be parameter preset shown in table 1 Another subset of set, i.e. { K, P_type}。

The source of the pulse configuration signaling received on pulse-shaping controller 201 and producing method, can specifically join The associated description in the embodiment of emitter 10 is examined, the embodiment of the present invention is not restricted.

In addition, the embodiment of the present invention additionally provides a kind of communication system, the communication system includes：Base station and terminal are set It is standby, wherein：

The base station can be described in the base station 70 that the corresponding embodiments of Fig. 7 are described or Fig. 5 embodiments of the method Base station, on the base station function and implementation can with specific reference to Fig. 5 embodiments of the method content, here no longer go to live in the household of one's in-laws on getting married State；

The terminal device can be that the terminal device 80 or Fig. 5 methods of the corresponding embodiment descriptions of Fig. 8 are implemented Terminal device station described in example, function and implementation on the terminal device can be with specific reference to Fig. 5 embodiments of the method Content, repeat no more here.

In summary, by implementing filter optimization method provided in an embodiment of the present invention, believed by maximizing receiving terminal It is dry to make an uproar than to obtain preferred receiving filter coefficient or preferred transmitting filter coefficient, and go to approach using known window function The preferred receiving filter coefficient or preferred transmitting filter coefficient, can carry Signal to Interference plus Noise Ratio, improve demodulation performance；Pass through Implement wave filter collocation method provided in an embodiment of the present invention, the communication scenes of pulse-shaping processing are carried out the need for default Under, the wave filter of transmitting terminal and/or receiving terminal is configured by the pulse parameter of pulse to be configured, whole communication system can be improved Communication performance, for example reduce out-of-band power leakage, improve Signal to Interference plus Noise Ratio, reduction interference etc..

One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with The hardware of correlation is instructed to complete by computer program, described program can be stored in a computer read/write memory medium In, the program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, described storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, RAM) etc..

Above disclosed is only section Example of the present invention, can not limit the right model of the present invention with this certainly Enclose, one of ordinary skill in the art will appreciate that all or part of flow of above-described embodiment is realized, and will according to right of the present invention Made equivalent variations are sought, still falls within and invents covered scope.

Claims

1. a kind of filter optimization method, it is characterised in that including：

Ratio is revealed according to target adjacent channel to require, it is determined that meeting the target adjacent channel reveals transmitting filter than requiring Coefficient

According to channel statistic H and target adjacent channel leakage is met than requiringCalculate so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientWherein, channel statistic, transmitting filter system Number g_TX, and receiving filter coefficient gamma (t)_RX(t) it is to determine the receiving terminal Signal to Interference plus Noise Ratio SINR_RXVariable；

The preferred receiving filter coefficient is approached using known window functionObtain accepting filter with described preferred Device coefficientApproximate receiving filter coefficientIt is describedEnd filter is received for configuring.

2. the method as described in claim 1, it is characterised in that described according to channel statistic H and to meet the target phase Side channel leakage is than requiringCalculate so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter CoefficientIncluding：

Wherein, g_TX(t) it is equal to

3. method as claimed in claim 1 or 2, it is characterised in that also include：

According to the channel statistic H and describedCalculate so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum is preferred Transmitting filter coefficientWherein, the channel statistic, the transmitting filter coefficient g_TX(t) it is, and described Receiving filter coefficient gamma_RX(t) it is to determine the transmitting terminal Signal to Interference plus Noise Ratio SINR_TXVariable；

The preferred transmitting filter coefficient is approached using known window functionObtain filtering with the preferred transmission Ripple device coefficientApproximate transmitting filterIt is describedFor configuring sending filter.

4. method as claimed in claim 3, it is characterised in that described according to the channel statistic H and described Calculate so that transmitting terminal Signal to Interference plus Noise Ratio SINR_TXMaximum preferred transmitting filter coefficientIncluding：

Wherein, γ_RX(t) it is equal to

5. the method as any one of claim 1-4, it is characterised in that obtain filtering with the preferred reception described Ripple device coefficientApproximate receiving filter coefficientAfterwards, in addition to：

By iterative optimization process come laddering optimization transmitting filter coefficient g_TX(t) with receiving filter coefficient gamma_RX (t)；Wherein：

In i+1 wheel, preferred receiving filter coefficient is calculated by following algorithms Wherein, g_TX(t) it is equal to It is It is obtaining with preferred transmitting filter coefficient in being taken turns i-thApproximate transmitting filter coefficient,It is i-th Calculate obtaining so that transmitting terminal Signal to Interference plus Noise Ratio SINR in wheel_TXMaximum preferred transmitting filter coefficient；

Or, in i+1 wheel, preferred transmitting filter coefficient is calculated by following algorithms Wherein, γ_RX(t) it is equal to Be It is obtaining with preferred receiving filter coefficient in i-th wheelApproximate receiving filter coefficient,It is in i-th takes turns Calculate obtaining so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficient；

Wherein, i is positive integer.

6. such as any one of claim 1-5 method, it is characterised in that above-mentioned receiving filter coefficient g_TX(t) it is, described to send Filter coefficient γ_RX(t) characterized by predefined pulse parameter；

The pulse parameter includes：The all or part of parameter preset set；The parameter preset set includes：First flag bit Flag_head, the second flag bit Flag_tail, the first numerical value of N₁, second value N₂, pulse shape P_typeAnd the pulse to be configured Relative to the length K of single symbol period.Wherein, the first flag bit Flag_headWhether arteries and veins is done for designated symbol head It is washed into type, the second flag bit Flag_tailPulse-shaping, first numerical value of N whether are done for designated symbol afterbody₁For Indicate to do pulse-shaping in single symbol and amplitude weight be not equal to 1 sample point number, the second value N₂For referring to Show that single outer symbol does the number of the sample point of pulse-shaping；The pulse shape P_typeFor indicating the pulse to be configured Shape.

7. a kind of wave filter collocation method, it is characterised in that applied to base station side, including：

If present communications scene belong to it is default the need for carry out the communication scenes of pulse-shaping processing, base station determines to be directed to institute State the pulse to be configured of present communications scene；The pulse to be configured is by set of pulses parameter characterization；

The configuration information that receiving terminal apparatus is sent, the configuration information is used for the pulse form for indicating that the terminal device is supported Shape；

If the configuration information shows that the terminal device supports the pulse to be configured, and judges to need to set in terminal Pulse-shaping processing is done in standby side, then the pulse parameter by the pulse to be configured is notified to terminal device；The pulse parameter is used In the filter coefficient for configuring the terminal device.

8. method as claimed in claim 7, it is characterised in that the needs do pulse-shaping processing in terminal equipment side, bag Include：

, it is necessary to carry out impulse modulation in transmitting terminal during uplink；Or, it is necessary to connect in downlink transmission process Receiving end carries out impulse modulation；

During uplink, the pulse parameter of the pulse to be configured is used for the transmitting filter of configurating terminal device；Or Person, in downlink transmission process, the pulse parameter of the pulse to be configured is used for the receiving filter of configurating terminal device.

9. method as claimed in claim 7 or 8, it is characterised in that also include：If it is judged that needing to do pulse in base station side Forming processes, then according to the pulse parameter of the pulse to be configured, configure the filter coefficient of the base station side；The pulse ginseng Number is used for the filter coefficient for configuring the base station.

10. method as claimed in claim 9, it is characterised in that the needs do pulse-shaping processing in base station side, including：

, it is necessary to carry out impulse modulation in receiving terminal during uplink；Or, it is necessary in hair in downlink transmission process Sending end carries out impulse modulation；

During uplink, the pulse parameter of the pulse to be configured is used for the receiving filter coefficient for configuring base station；Or Person, in downlink transmission process, the pulse parameter of the pulse to be configured is used for the transmitting filter coefficient for configuring base station.

11. the method as described in claim 8 or 10, it is characterised in that described to judge to need to enter horizontal pulse tune in transmitting terminal System, including：

In the type of service of transmission services, the preset requirement of communication scenes, the expense of protection band at least one of judge Whether need to carry out impulse modulation in transmitting terminal.

12. the method as described in claim 8 or 10, it is characterised in that described to judge to need to enter horizontal pulse tune in receiving terminal System, including：

Judge whether to need connecing with least one in the exponent number of modulation according to the demodulation performance of receiving terminal, the coding of signal Receiving end carries out impulse modulation.

13. the method as any one of claim 7-12, it is characterised in that the pulse by the pulse to be configured Parameter notified to the terminal device, including：

14. method as claimed in claim 13, it is characterised in that the signaling carries the pulse ginseng of the pulse to be configured Number；Or, the signaling carries the configured information of the pulse to be configured.

15. the method as any one of claim 7-14, it is characterised in that it is described it is default the need for carry out pulse-shaping The communication scenes of processing include at least one of following：

The present communications scene belong to it is default the need for limit the scene of out-of-band power leakage, the terminal device and be scheduled in Resource edge that different OFDM setup parameters coexist, the terminal device using high order modulation or high-order modulating-coding strategy, The current corresponding time-frequency decline of the terminal device reaches that predeterminable level, the corresponding resource location of above-mentioned terminal device are in data The physical channel that frame head and/or postamble, the terminal device of frame are presently in is the physics letter of pulse-shaping the need for presetting Road；The OFDM setup parameters include circulating prefix-length and subcarrier width.

16. the method as any one of claim 7-15, it is characterised in that the pulse parameter includes：Parameter preset The all or part of set；The parameter preset set includes：First flag bit Flag_head, the second flag bit Flag_tail, first Numerical value of N₁, second value N₂, pulse shape P_typeAnd the pulsion phase to be configured is for the length K of single symbol period.Its In, the first flag bit Flag_headPulse-shaping, the second flag bit Flag whether are done for designated symbol head_tailWith Pulse-shaping, first numerical value of N whether are done in designated symbol afterbody₁For indicating to do pulse-shaping and amplitude in single symbol Weight is not equal to the number of 1 sample point, the second value N₂For indicating that single outer symbol does the sample point of pulse-shaping Number, the pulse shape P_typeShape for indicating the pulse to be configured.

17. a kind of wave filter collocation method, it is characterised in that applied to terminal equipment side, including：

18. method as claimed in claim 17, it is characterised in that the arteries and veins for the pulse to be configured that the reception base station is notified Parameter is rushed, including：

The dynamic signaling with the fixed cycle that base station is sent is received, the dynamic signaling with the fixed cycle is used to notify institute State the pulse parameter of pulse to be configured；Or,

The real-time dynamic signaling that base station is sent is received, the real-time dynamic signaling is used for the arteries and veins for notifying the pulse to be configured Rush parameter.

19. method as claimed in claim 18, it is characterised in that the signaling carries the pulse ginseng of the pulse to be configured Number；Or, the signaling carries the configured information of the pulse to be configured.

20. the method as any one of claim 17-19, it is characterised in that the pulse form that the terminal device is supported Shape is used to indicate whether the terminal device supports the corresponding pulse to be configured of present communications scene；The present communications Scene belong to it is default the need for carry out the communication scenes of pulse-shaping processing.

21. the method as any one of claim 17-20, it is characterised in that it is described it is default the need for carry out pulse into The communication scenes of type processing include at least one of following：

22. a kind of communication network device, it is characterised in that including：

Determining unit, is required for revealing ratio according to target adjacent channel, it is determined that meeting the target adjacent channel leakage than wanting The transmitting filter coefficient asked

First computing unit, for according to channel statistic H and meeting target adjacent channel leakage than requiringCalculate so that receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficientWherein, believe Road statistical property, transmitting filter coefficient g_TX, and receiving filter coefficient gamma (t)_RX(t) it is to determine that the receiving terminal letter is dry Make an uproar and compare SINR_RXVariable；

First approximating unit, for approaching the preferred receiving filter coefficient using known window functionObtain and institute State preferred receiving filter coefficientApproximate receiving filter coefficientIt is describedFor configuring receiving terminal Wave filter.

23. equipment as claimed in claim 22, it is characterised in that first computing unit, specifically for：

Wherein, g_TX(t) it is equal to

24. the equipment as described in claim 22 or 23, it is characterised in that also include：

Second computing unit, for according to the channel statistic H and describedCalculate so that transmitting terminal believes dry make an uproar Compare SINR_TXMaximum preferred transmitting filter coefficientWherein, channel statistic, the transmitting filter coefficient g_TX, and the receiving filter coefficient gamma (t)_RX(t) it is to determine the transmitting terminal Signal to Interference plus Noise Ratio SINR_TXVariable；

Second approximating unit, for approaching the preferred transmitting filter coefficient using known window functionObtain with The preferred transmitting filter coefficientApproximate transmitting filterIt is describedFor configuring transmitting terminal filter Ripple device.

25. equipment as claimed in claim 24, it is characterised in that second computing unit, specifically for：

Wherein, γ_RX(t) it is equal to

26. the equipment as any one of claim 22-25, it is characterised in that also include：Iterative optimization unit, is used for： By iterative optimization process come laddering optimization transmitting filter coefficient g_TX(t) with receiving filter coefficient gamma_RX(t)； Wherein：

Or, in i+1 wheel, preferred transmitting filter coefficient is calculated by following algorithms Wherein, γ_RX(t) it is equal to It is It is obtaining with preferred receiving filter coefficient in i wheelsApproximate receiving filter coefficient,It is to be fallen into a trap in the i-th wheel What is obtained causes receiving terminal Signal to Interference plus Noise Ratio SINR_RXMaximum preferred receiving filter coefficient；

Wherein, i is positive integer.

27. the equipment as any one of claim 22-26, it is characterised in that the receiving filter coefficient g_TX(t)、 The transmitting filter coefficient gamma_RX(t) characterized by predefined pulse parameter；

28. a kind of base station, it is characterised in that including：

Determining unit, if for present communications scene belong to it is default the need for carry out the communication scenes of pulse-shaping processing, Base station determines the pulse to be configured for the present communications scene；The pulse to be configured is by set of pulses parameter characterization；

Receiving unit, the configuration information sent for receiving terminal apparatus, the configuration information is used to indicate the terminal device The pulse shape of support；

Notification unit, if showing that the terminal device supports the pulse to be configured for the configuration information, and judges Going out is needed to do pulse-shaping processing in terminal equipment side, then the pulse parameter by the pulse to be configured is notified to terminal device； The pulse parameter is used for the filter coefficient for configuring the terminal device.

29. base station as claimed in claim 28, it is characterised in that the needs do pulse-shaping processing in terminal equipment side, Including：

30. the base station as described in claim 28 or 29, it is characterised in that also include：Dispensing unit, for if it is judged that needing Pulse-shaping processing is done in base station side, then according to the pulse parameter of the pulse to be configured, configures the filtering of the base station side Device coefficient；The pulse parameter is used for the filter coefficient for configuring the base station.

31. base station as claimed in claim 30, it is characterised in that the needs do pulse-shaping processing in base station side, including：

32. the base station as described in claim 29 or 31, it is characterised in that the judge module specifically for：According to transmission industry In the type of service of business, the preset requirement of communication scenes, the expense of protection band at least one of come judge whether need send End carries out impulse modulation.

33. the base station as described in claim 29 or 31, it is characterised in that the judge module specifically for：According to receiving terminal Demodulation performance, signal coding with modulation exponent number at least one of come judge whether need receiving terminal enter horizontal pulse adjust System.

34. the base station as any one of claim 28-33, it is characterised in that the notification unit, specifically for：

35. base station as claimed in claim 34, it is characterised in that the signaling carries the pulse ginseng of the pulse to be configured Number；Or, the signaling carries the configured information of the pulse to be configured.

36. the base station as any one of claim 28-35, it is characterised in that it is described it is default the need for carry out pulse into The communication scenes of type processing include at least one of following：

37. the base station as any one of claim 28-36, it is characterised in that the pulse parameter includes：Parameter preset The all or part of set；The parameter preset set includes：First flag bit Flag_head, the second flag bit Flag_tail, first Numerical value of N₁, second value N₂, pulse shape P_typeAnd the pulsion phase to be configured is for the length K of single symbol period.Its In, the first flag bit Flag_headPulse-shaping, the second flag bit Flag whether are done for designated symbol head_tailWith Pulse-shaping, first numerical value of N whether are done in designated symbol afterbody₁For indicating to do pulse-shaping and amplitude in single symbol Weight is not equal to the number of 1 sample point, the second value N₂For indicating that single outer symbol does the sample point of pulse-shaping Number, the pulse shape P_typeShape for indicating the pulse to be configured.

38. a kind of terminal device, it is characterised in that including：

Transmitting element, for base station send configuration information, the configuration information to be used for the pulse form that instruction terminal equipment is supported Shape；

39. terminal device as claimed in claim 38, it is characterised in that the receiving unit, specifically for：

40. terminal device as claimed in claim 39, it is characterised in that the signaling carries the pulse of the pulse to be configured Parameter；Or, the signaling carries the configured information of the pulse to be configured.

41. the terminal device as any one of claim 38-40, it is characterised in that the arteries and veins that the terminal device is supported Rushing shape is used to indicate whether the terminal device supports the corresponding pulse to be configured of present communications scene；It is described current Communication scenes belong to it is default the need for carry out the communication scenes of pulse-shaping processing.

42. the terminal device as any one of claim 38-41, it is characterised in that it is described it is default the need for carry out arteries and veins The communication scenes of forming processes are rushed including at least one of following：

43. a kind of communication system, it is characterised in that including：Base station and terminal device, wherein：

The base station is the base station any one of claim 28-37；

The terminal device is the terminal device any one of claim 38-42.