CN106713213A - Digital modulation method and apparatus, demodulation method and apparatus, and system - Google Patents

Digital modulation method and apparatus, demodulation method and apparatus, and system Download PDF

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Publication number
CN106713213A
CN106713213A CN201510446046.0A CN201510446046A CN106713213A CN 106713213 A CN106713213 A CN 106713213A CN 201510446046 A CN201510446046 A CN 201510446046A CN 106713213 A CN106713213 A CN 106713213A
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phase
constellation
constellation point
annulus
adjusted
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CN106713213B (en
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陈庆勇
王学寰
张兴新
罗龙
孙德福
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2016/090988 priority patent/WO2017016443A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/36—Modulator circuits; Transmitter circuits

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

The embodiment of the invention discloses a digital modulation method. The method comprises: coding processing is carried out on original data to obtain a bit sequence; the bit sequence is divided into M to-be-modulated bit groups, wherein each to-be-modulated bit group includes N bits; according to a preset constellation map, constellation mapping is carried out on the M to-be-modulated bit groups to obtain M constellation points; phases of the M constellation points are obtained, wherein the phases of the M constellation points include: phi1, phi2, ..., phiM; the phases of the M constellation points I are adjusted; to be specific, the phi1 is adjusted to be phi0+phi1, the phi2 is adjusted to be phi0+phi1+phi2, ..., and the phiM is adjusted to be phi0+phi1+phi2+phi3+...+phiM, wherein the phi0 is 0 or the phi0 is the phase of a previous symbol before the constellation point with the phase of phi1; and the M constellation points after phase adjustment are modulated to obtain an N-order modulation signal. In addition, the embodiment of the invention also discloses a digital demodulation method and apparatus, and a system. Therefore, the phase noise interference can be reduced.

Description

A kind of Ditital modulation method, demodulation method, relevant apparatus and system
Technical field
The present invention relates to the communications field, more particularly to a kind of Ditital modulation method, demodulation method, relevant apparatus And system.
Background technology
In nonlinear channel, it is desirable to which modulation system envelope fluctuating used is smaller, in order to improve spectral bandwidth Utilization rate, the general high-order modulating combined with phase using amplitude of transmission of signal.When the frequency of carrier wave When rate and order of modulation higher, modulation system is influenceed larger by phase noise.
For example, in IEEE 802.11ad communication protocols, the band operation of carrier wave is in 60GHz, IEEE802.11ad Defined in communication protocol SC PHY (Single Carrier Physics, single carrier physical layer, abbreviation SC PHY) With OFDM PHY (Orthogonal Frequency Division Multiplexing Physics, orthogonal frequency Multiplexed physical layer, abbreviation OFDM PHY), wherein OFDM PHY are due to PAPR (Peak to Average Power Ratio, peak-to-average force ratio, abbreviation PAPR) it is larger, the requirement to power amplifier is high, non-industrialization； In order to reduce the requirement of power amplifier, SC PHY only support up to 16QAM (Quadrature Amplitude Modulation, quadrature amplitude modulation, abbreviation QAM) modulation system, if improve modulation Exponent number, phase noise can cause greatly interference, and the bit error rate possibly cannot meet data transportation requirements after decoding.
It is 64 bit error rate schematic diagrames of qam mode referring to Fig. 1.Wherein, MCS26 (Modulation And Coding Scheme, coded modulation, abbreviation MCS) and MCS27 represent 802.11ad communication protocols The numbering of middle code modulation mode, MCS26 (64QAM 3/4) (w/o PN) is represented using 3/4 coding speed Rate, in the absence of PN (Phase Noise, phase noise, abbreviation PN) interference only exist AWGN (Additive White Gaussian Noise, additive white Gaussian noise, abbreviation AWGN) interference when ber curve, MCS26 (linear PNC) (w PN) represents that there is phase noise disturbs and use PNC (Phase Noise Cancel, phase noise reduction, abbreviation PNC) ber curve after algorithm, MCS27 (64QAM 13/16) (w/o PN) table is disturbed when only existing AWGN interference using 13/16 code rate, in the absence of phase noise Ber curve, MCS27 (linear PNC) (w PN) represents there is phase noise and disturb and use phase Ber curve after the noise suppression algorithm of position.
As can be seen that in the case where only AWGN is disturbed, BER (the Bit Error after 64QAM decodings Rate, the bit error rate, abbreviation BER) with SNR (Signal Noise Ratio, signal to noise ratio, abbreviation SNR) Lifted and reduced rapidly；And in the case of there is PN interference, using at the linear PNC algorithms that industry is commonly used Reason, even if SNR is more than 23dB, BER remains within 10 after decoding-3Left and right, cannot meet just substantially Normal data transfer.Therefore existing phase noise reduction algorithm cannot effectively solve the influence to the bit error rate.
The content of the invention
Embodiment of the present invention technical problem to be solved is, there is provided a kind of Ditital modulation method, digital solution Tune method, relevant apparatus and system.Influence of the phase noise to the bit error rate can be reduced.
In order to solve the above-mentioned technical problem, embodiment of the present invention first aspect provides a kind of Ditital modulation method, Including：
Transmitting terminal carries out coded treatment and obtains bit sequence to initial data；
The bit sequence is divided into M bit group to be modulated, each bit group to be modulated by the transmitting terminal In include N number of bit；Wherein, M and N are the integer more than or equal to 1；
The transmitting terminal carries out constellation mapping according to default planisphere to the M bit group to be modulated, obtains To M constellation point；
The transmitting terminal obtains the phase of the M constellation point, and the phase of the M constellation point is respectively Φ1、Φ2、…、ΦM；
The transmitting terminal by the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1、 By Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1The previous symbol of constellation point phase；
M constellation point after phase adjustment is modulated, N rank modulated signals are obtained.
With reference in a first aspect, in the first possible implementation, the default planisphere includes：Just Hand over Modulation and Amplitude Modulation QAM constellation, or Amplitude Phase Keying APSK constellation figure.
It is described that initial data is carried out at coding with reference in a first aspect, in second possible implementation Before reason obtains bit sequence, also include：
The transmitting terminal carries out before coded treatment obtains bit sequence, also including to initial data：
The transmitting terminal generates the default planisphere, will be comprising N number of according to default bit mapping mode The bit group to be mapped of bit is mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
With reference in a first aspect, in the third possible implementation, also including：
The transmitting terminal obtains link-quality, the link-quality meet it is pre-conditioned in the case of, perform institute Transmitting terminal is stated by the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2 It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM。
With reference to any one in first aspect to the third possible implementation, in the 4th kind of possible reality In existing mode, also include：
The transmitting terminal sends phase adjustment configured information to receiving terminal, and the phase adjustment configured information is used for The receiving terminal is indicated to enter horizontal phasing control.
Embodiment of the present invention second aspect provides a kind of digital demodulation method, including：
The N rank modulated signals that receiving terminal receiving end/sending end sends, obtain the M phase of constellation point, the M The phase of individual constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
The M constellation point is entered horizontal phasing control by the receiving terminal, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Constellation point previous symbol phase；
M constellation point after the phase adjustment is carried out demapping by the receiving terminal according to default planisphere Obtain M bit group；Wherein, each bit group includes N number of bit；
The M bit group is carried out decoding process and obtains initial data by the receiving terminal.
With reference to second aspect, in the first possible implementation, also include：
The receiving terminal is performed described by described in the case where needing to enter horizontal phasing control to M constellation point M constellation point enters horizontal phasing control, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1、…、 By θMIt is adjusted to θM-θM-1。
With reference to the first possible implementation of second aspect, in second possible implementation, institute State receiving terminal includes in the case where needing to enter horizontal phasing control to M constellation point：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Click through horizontal phasing control；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control.
The embodiment of the present invention third aspect provides a kind of digital modulation device, it is characterised in that including：
Coding module, bit sequence is obtained for carrying out coded treatment to initial data；
Grouping module, for the bit sequence that the coding module is input into be divided into M ratio to be modulated Special group, N number of bit is included in each bit group to be modulated；Wherein, M and N are whole more than or equal to 1 Number；
Constellation mapping block, the M for being input into the grouping module according to default planisphere is treated Modulation bit group carries out constellation mapping, obtains M constellation point；
Phase acquisition module, the phase of the M constellation point for obtaining the constellation mapping block input, The phase of the M constellation point is respectively Φ1、Φ2、…、ΦM；
Phase adjusting module, the phase of the M constellation point for the phase acquisition module to be obtained is adjusted It is whole, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMAdjustment It is Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1Constellation point it is previous The phase of symbol；
Modulation module, is carried out for M constellation point after the phase adjustment that is input into the phase adjusting module Modulation, obtains N rank modulated signals.
With reference to the third aspect, in the first possible implementation, the default planisphere includes：Just Hand over Modulation and Amplitude Modulation QAM constellation, or Amplitude Phase Keying APSK constellation figure.
With reference to the third aspect, in second possible implementation, also include：
Constellation configuration module, for generating the default planisphere, according to default bit mapping mode Bit group to be mapped comprising N number of bit is mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
With reference to the third aspect, in the third possible implementation, also include：
Judge module, for obtaining link-quality, the link-quality meet it is pre-conditioned in the case of, The phase adjusting module is triggered to start working.
With reference to any one in the third aspect to the third possible implementation, in the 4th kind of possible reality In existing mode, also include：
Sending module, for sending phase adjustment configured information, the phase adjustment configured information to receiving terminal For indicating the receiving terminal to enter horizontal phasing control.
Embodiment of the present invention fourth aspect provides a kind of digital demodulating apparatus, including：
Decoding module, for receiving N rank modulated signals, obtains the M phase of constellation point, the M The phase of constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
Phase modulation module, the M constellation point for the decoding module to be obtained enters horizontal phasing control, Specially：θ 1 is adjusted to θ1-θ0, θ 2 is adjusted to θ 2- θ 1 ..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Constellation point previous symbol phase；
Phase De-mapping module, adjusts for the phase modulation module to be entered into line phase according to default planisphere M constellation point after whole carries out demapping and obtains M bit group；Wherein, each bit group is comprising N number of Bit；
Decoder module, the M bit group for the phase De-mapping module to be obtained is carried out at decoding Reason obtains initial data.
With reference to fourth aspect, in the first possible implementation, also include：
Judge module, in the case where needing to enter horizontal phasing control to M constellation point, triggering the phase Position adjusting module is started working.
With reference to the first possible implementation of fourth aspect, in second possible implementation, institute State judge module specifically for：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Horizontal phasing control is clicked through, the phase adjusting module is triggered and is started working；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control, triggers the phase adjusting module and starts working.
The aspect of the embodiment of the present invention the 5th provides a kind of digital communication system, digital modulation device and digital solution Device, the digital modulation device is adjusted to obtain bit sequence for carrying out coded treatment to initial data；
The bit sequence is divided into M bit group to be modulated, comprising N number of in each bit group to be modulated Bit；Wherein, M and N are the integer more than or equal to 1；
Constellation mapping is carried out to the M bit group to be modulated according to default planisphere, M constellation is obtained Point；
The phase of the M constellation point is obtained, the phase of the M constellation point is respectively Φ1、Φ2、…、 ΦM；
By the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2Adjustment It is Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1The previous symbol of constellation point phase；
M constellation point after phase adjustment is modulated, N rank modulated signals are obtained；
The digital demodulating apparatus are used to receive the N rank modulated signals that the digital modulation device sends, and obtain The M phase of constellation point, the phase of the M constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
The M constellation point is entered into horizontal phasing control, specially：θ 1 is adjusted to θ1-θ0, by θ 2 Be adjusted to θ 2- θ 1 ..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Star The phase of the previous symbol of seat point；
M constellation point after the phase adjustment is carried out demapping by the receiving terminal according to default planisphere Obtain M bit group；Wherein, each bit group includes N number of bit；
The M bit group is carried out decoding process and obtains initial data by the receiving terminal.
Implement the embodiment of the present invention, have the advantages that：
Before carrying out digital modulation using planisphere, the phase to original constellation point is adjusted, modulation methods Method is：Phase after current constellation point to the modulation of the phase sum as current constellation point of first constellation point, Receiving terminal carries out phase difference, can effectively remove and mutually make an uproar consecutive points general character part, so as to reduce phase noise Interference.
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 implementing Example or the accompanying drawing to be used needed for description of the prior art are briefly described, it should be apparent that, describe below In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is that existing use 64QAM carries out the ber curve figure after digital modulation；
Fig. 2 is the schematic flow sheet of Ditital modulation method provided in an embodiment of the present invention；
Fig. 3 is the schematic diagram of transmitting terminal phase-modulation provided in an embodiment of the present invention；
Fig. 4 is the constellation point distribution map of existing 64APSK planispheres；
Fig. 5 is that 64 planispheres of use of the embodiment of the present invention carry out the laggard line phase noise suppressed of digital modulation Ber curve figure；
Fig. 6 is that 128 planispheres of use of the embodiment of the present invention carry out the laggard line phase noise suppression of digital modulation The ber curve figure of system；
Fig. 7 is that 256 planispheres of use of the embodiment of the present invention carry out the laggard line phase noise suppression of digital modulation The ber curve figure of system；
Fig. 8 is that 1024 planispheres of use of the embodiment of the present invention carry out the laggard line phase noise suppression of digital modulation The ber curve figure of system；
Fig. 9 is that 64 planispheres of use of the embodiment of the present invention carry out the laggard line phase noise suppressed of digital modulation Ber curve figure；
Figure 10 is a kind of schematic flow sheet of digital demodulation method provided in an embodiment of the present invention；
Figure 11 is a kind of structural representation of digital modulation device provided in an embodiment of the present invention；
Figure 12 is a kind of structural representation of digital demodulating apparatus provided in an embodiment of the present invention；
Figure 13 is a kind of another structural representation of digital modulation device provided in an embodiment of the present invention；
Figure 14 is a kind of another structural representation of digital demodulating apparatus provided in an embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
Term " part ", " module ", " system " for using in this manual etc. are used to represent computer correlation Entity, hardware, firmware, the combination of hardware and software, software or executory software.For example, part Can be but not limited to, process, processor, object, executable file, the execution for running on a processor Thread, program and/or computer.By diagram, the application and computing device for running on the computing device all may be used Being part.One or more parts can reside in process and/or execution thread, and part can be located at a meter On calculation machine and/or it is distributed between 2 or more computers.Additionally, these parts can be stored from above The various computer-readable mediums for having various data structures are performed.Part can for example according to one or more Packet is (such as from two interacted with local system, distributed system and/or internetwork another part The data of individual part, such as by the internet of signal and other system interactions) signal by local and/or Remote process communicates.
Additionally, various aspects of the invention or feature can be implemented as method, device or using standard program and/ Or the product of engineering technology.Term " product " used herein cover can from any computer-readable device, Carrier or the computer program of medium access.For example, computer-readable medium can include, but are not limited to:Magnetic Memory device (for example, hard disk, floppy disk or tape etc.), CD (for example, CD (Compact Disk, Compact disk), DVD (Digital Versatile Disk, digital universal disc) etc.), smart card and flush memory device (for example, EPROM (Erasable Programmable Read-Only Memory, erasable programmable Read memory), card, rod or Keyed actuator etc.).In addition, various storage media described herein can generation Table is used for one or more equipment and/or other machine readable medias of storage information.Term " machine readable media " may include but be not limited to, wireless channel and can store, comprising and/or carry instruction and/or data it is various Other media.
The Ditital modulation method and digital demodulation method provided in each implementation method can be applied to various communication systems Formula, including but not limited to can be GSM (Global System of Mobile communication, the whole world Mobile communication) or CDMA (Code Division Multiple Access, CDMA) in, it is also possible to It is WCDMA (Wideband Code Division Multiple Access, WCDMA), may be used also Being LTE (Long Term Evolution, Long Term Evolution), or future 5G network formats, or WLAN (Wireless Local Area Networks, WLAN), worldwide interoperability for microwave accesses (Worldwide Interoperability for Microwave Access, WiMAX), bluetooth and infrared ray etc. its His communication standard.
It is a kind of schematic flow sheet of Ditital modulation method provided in an embodiment of the present invention, in this hair referring to Fig. 2 In bright embodiment, methods described includes：
S201, transmitting terminal carry out coded treatment and obtain bit sequence to initial data.
Specifically, transmitting terminal obtains binary initial data of information source output, information source is carried out to initial data The treatment such as coding, channel coding treatment or interweaving encoding, wherein source coding method includes but is not limited to Shannon Coding, Fano coding and huffman coding, channel coding method include but is not limited to checksum coding, CRC Coding and Turbo codings etc., binary bit sequence is obtained after the encoded treatment of transmitting terminal.
The bit sequence is divided into M bit group to be modulated by S202, the transmitting terminal, and each is to be modulated N number of bit is included in bit group；Wherein, M and N are the integer more than or equal to 1.
Specifically, bit sequence is divided into M bit group by transmitting terminal according to order of modulation N, each bit Group includes N number of bit.For example, including 16 bits in bit sequence, order of modulation is N=2, transmitting terminal 16 bits are divided into 8 bit groups, each bit group includes 2 bits.
S203, constellation mapping is carried out to the M bit group according to default planisphere, obtain M constellation Point.
Specifically, planisphere pre-sets according to order of modulation, such as order of modulation N=2, planisphere It is 4 planispheres；Order of modulation is 4, and planisphere is 16 planispheres, and order of modulation is 6, planisphere It is 64 planispheres.Planisphere can be APSK constellation figure, QAM constellation or the other forms of standard Symmetric form planisphere, or customized asymmetrical planisphere, the embodiment of the present invention is in planisphere The position of constellation point be not restricted.Planisphere is used to represent the mapping relations of bit group and constellation point, this hair Bright embodiment is not also restricted to the mapping relations of bit group and constellation point.Optionally, in QAM constellation Using Gray code mapping mode, quasi- Gray code mapping mode is used in APSK constellation figure.
Transmitting terminal carries out constellation mapping and obtains M constellation point using default planisphere to M bit group, often The coordinate representation amplitude and phase of individual constellation point.
S204, the transmitting terminal enter planetary and reflect according to default planisphere to the M bit group to be modulated Penetrate, obtain M constellation point.
S205, the transmitting terminal by the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM； Wherein Φ0It is 0 or first phase of the previous symbol of constellation point.
Specifically, transmitting terminal according to the phase of the constellation point inquired in default planisphere to being adjusted, The amplitude of constellation point is constant.Specifically adjustment mode is：The mapping of the shooting sequence constellation point of bit group Sequentially, the phase of current constellation point obtains the phase of current constellation point with the phase sum of above all of constellation point Phase after the adjustment of position.For example, bit group to be modulated is arranged as according to shooting sequence：S1、S2、……、SM, Constellation mapping is carried out according to default planisphere and obtains the M coordinate of constellation point respectively (A1, Φ1)、(A2, Φ2)、…(AM, ΦM), the coordinate obtained after horizontal phasing control respectively (A is entered to M constellation point1, Φ0+Φ1)、(A2, Φ0+Φ1+Φ2)、…(AM, Φ0+Φ1+Φ2+Φ3+…+ΦM).Wherein AiRepresent i-th amplitude of constellation point, i=1,2,3 ..., M；Φ0It is in 0 or M constellation point One phase of a upper symbol of constellation point, a upper symbol can be the symbol of pilot frequency sequence, training sequence The symbol or GI (Guard Interval, protection interval, abbreviation GI) of row.
For example, with reference to Fig. 3, planisphere is carried out according to order of occurrence map obtain three coordinates of constellation point Respectively (A, Φ1)、(B、Φ2)、(C、Φ3), A, B and C represent amplitude, Φ respectively1、 Φ2、Φ3Phase is represented respectively, it is assumed that Φ0=0, by after phase adjustment, the coordinate of three constellation points is changed into (A, Φ1), (B, Φ1+Φ2), (C, Φ1+Φ2+Φ3)。
S206, the transmitting terminal are modulated to M constellation point after phase adjustment, obtain N contrast systems letter Number.
Specifically, transmitting terminal can be adjusted using IQ (In-phase Quadrature, inphase quadrature, abbreviation IQ) Method processed controls amplitude, phase, amplitude and the phase of carrier wave to obtain modulated signal, modulated signal is carried out non- Launched by antenna after Linear Amplifer.The frequency of carrier wave can be high frequency, such as 60GHz frequency ranges.
Implement embodiments of the invention, be adjusted by the phase of the constellation point obtained to constellation mapping, can Effectively to reduce the interference of phase noise, the bit error rate of receiving terminal is reduced, especially transmitting terminal is operated in high again and again Duan Shi, effect is more notable.
Optionally, the default planisphere includes：QAM constellation or APSK constellation figure.
Specifically, default planisphere can be existing QAM constellation, APSK constellation figure or to existing Some QAM constellations or APSK constellation figure optimize after planisphere.Wherein existing qam constellation Constellation point in figure can be with rectangular arrangement, and the distance between each constellation point is equal.
Existing APSK constellation figure is made up of multiple concentric circles, has equally spaced constellation point on each circle, if The quantity of concentric circles is K, then the signal collection of APSK constellation figure is：
X=rkexp(2π*ik/nk+θk) wherein, k=1,2 ..., K, rkIt is k-th radius of circumference, nkIt is k-th quantity of the constellation point of circumference, ikIt is a sequence number for constellation point on k-th circumference, ik=0,1,2 ..., nk- 1, θkIt is the phase of the constellation point on k-th circumference.In order to make full use of planisphere Signal space, n should be metk＜ nk+1, i.e., the quantity of the constellation point of excircle is more than the constellation point of inner periphery Quantity.
Exemplary, referring to the distribution situation of the constellation point of the 64APSK planispheres of Fig. 4, circle in 64APSK The quantity of ring is 4, and the radius ratio of each annulus is from inside to outside：1:2:3:4, the quantity of the constellation point on each annulus It is distributed as from inside to outside：8:16:20:20,64 6 bit groups are mapped to according to the mode of quasi- Gray code In the individual constellation point of 64APSK.
It should be noted that the embodiment of the present invention is not restricted to the type of default planisphere, can be symbol Close the arbitrary planisphere of order of modulation.
Optionally, in some embodiments of the invention, the transmitting terminal carries out coded treatment to initial data Before obtaining bit sequence, also include：
The transmitting terminal generates the default planisphere, will be comprising N number of according to default bit mapping mode The bit group to be mapped of bit is mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
Specifically, during N=6, it is 64 APSK constellation figures that transmitting terminal generates default planisphere, according to pre- If bit mapping mode 64 different 6 bit groups to be mapped are respectively mapped to 64 point APSK stars On seat figure, the distribution of each constellation point meets on 64 APSK constellation figures：Annulus in 64 APSK constellation figures Quantity be 4, from inside to outside the radius of each annulus be respectively r ± 10%, 2r ± 10%, 3r ± 10% With 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20.
Wherein, X ± 10% represents a number range【0.9X, 1.1X】.It should be noted that 64 points When the radius of each annulus does not consider ± 10% error on APSK constellation figure, i.e. the radius of each annulus from inside to outside Respectively r, 2r, 3r and 4r, anti-phase noise are optimal.
During N=7, transmitting terminal generates default 128 planispheres, according to default bit mapping method by 128 Individual 7 different bit groups are respectively mapped on 128 APSK constellation figures, on 128 APSK constellation figures The satisfaction respectively of individual constellation point：The quantity of annulus is 6 in 128 APSK constellation figures, from inside to outside each circle The radius of ring be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 20,20,20, 20th, 24 and 24.
Wherein, X ± 10% represents a number range【0.9X, 1.1X】.It should be noted that 128 points When the radius of each annulus does not consider ± 10% error on APSK constellation figure, i.e. the radius of each annulus from inside to outside Scope is respectively r, 1.51r, 2.02r, 2.53r, 3.04r and 3.55r, and anti-phase noise is optimal.
During N=8, it is 256 APSK constellation figures that transmitting terminal generates default planisphere, according to default ratio Be mapped to 256 different 8 bit groups on 256 APSK constellation figures by special mapping method, 256 points The satisfaction respectively of the individual constellation point on APSK constellation figure：The quantity of annulus is 8 in 256 APSK constellation figures, The radius of each annulus is respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%, 2.149r from inside to outside ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, from inside to outside respectively The quantity of the constellation point on individual annulus is respectively 32.
Wherein, X ± 10% represents a number range【0.9X, 1.1X】.It should be noted that 256 points When the radius of each annulus does not consider ± 10% error on APSK constellation figure, i.e. the radius of each annulus from inside to outside Scope is respectively r, 1.383r, 1.766r, 2.149r, 2.532r, 2.915r, 3.298r, 3.681r, anti-phase Noise is optimal.
During N=10, it is 1024 APSK constellation figures that transmitting terminal generates default planisphere, according to default Be mapped to 1024 different 10 bit groups on 1024 APSK constellation figures by bit mapping method, and 1024 The satisfaction respectively of the individual constellation point on point APSK constellation figure：The quantity of annulus in 1024 APSK constellation figures Be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, from inside to outside each circle The quantity of the constellation point on ring is respectively 32.
Wherein, X ± 10% represents a number range【0.9X, 1.1X】.It should be noted that 1024 points When the radius of each annulus does not consider ± 10% error on APSK constellation figure, i.e. the radius of each annulus from inside to outside Scope be respectively r, 1.2224r, 1.4448r, 1.6672r, 1.8897r, 2.1121r, 2.3345r, 2.5569r, 2.7793r、3.0017r、3.2242r、3.4466r、3.6690r、3.8914r、4.1138r、4.3362r、4.5587r、 4.7811r、5.0035r、5.2259r、5.4483r、5.6707r、5.8932r、6.1156r、6.3380r、6.5604r、 6.7828r, 7.0052r, 7.2277r, 7.4501r, 7.6725r, 7.8949r, anti-phase noise are optimal.
It is understood that when carrying out bit map for planisphere, might not be clicked through to all of constellation Row bit map, can map the constellation point in planisphere as needed, if ensure transmitting terminal and Receiving terminal uses identical planisphere.
It is that the planisphere of the different points of use of the embodiment embodiment of the present invention carries out digital tune referring to Fig. 5-Fig. 8 The ber curve of system, introduces AWGN and PN during modulation, and abscissa is SNR, indulges and sits It is designated as BER.In Figure 5, order of modulation be 6, DVB-S2X (Digital Video Broadcasting S2X, S2X versions DVB) represent obtained using PNC algorithms and existing 64 APSK constellation figures Ber curve；New Radius are represented and obtained using 64 APSK constellation figures of PNC algorithms and optimization The ber curve for arriving；New Radius (back off) represent the 64 point APSK using PNC algorithms and optimization Planisphere, it is considered to the ber curve that back-off is obtained；DP is represented using phase adjustment algorithm and optimization The ber curve that 64 APSK constellation figures are obtained；DP (back off) represent using phase-modulation algorithm and 64 APSK constellation figures of optimization, it is considered to the ber curve that back-off is obtained.Wherein, it is above-mentioned excellent 64 planispheres changed meet：The quantity of annulus is 4 in 64 APSK constellation figures, from inside to outside each circle The radius of ring is respectively r ± 10%, 2r ± 10%, 3r ± 10% and 4r ± 10%, from inside to outside each circle The quantity of the constellation point on ring is respectively 8,16,20 and 20.Phase adjustment algorithm refers to S101-S104 The algorithm of the phase summation of described adjacent constellation point.
Can be with from Fig. 5, when SNR is more than 23dB, numeral is carried out using 64 planispheres after optimization Bit error rate performance is improved after modulation, while being entered using 64 planispheres and phase adjustment algorithm after optimization Bit error rate performance is further improved after row digital modulation.
In figure 6, order of modulation is that 7, DVB-S2X is represented using PNC algorithms and existing 128 points The ber curve that APSK constellation figure is obtained；New Radius represent 64 using PNC algorithms and optimization The ber curve that point APSK constellation figure is obtained；New Radius (back off) are represented and are used PNC algorithms With 128 APSK constellation figures of optimization, it is considered to the ber curve that back-off is obtained；DP represents use The ber curve that phase-modulation algorithm and 128 APSK constellation figures of optimization are obtained；DP(back off) Represent 128 APSK constellation figures using phase-modulation algorithm and optimization, it is considered to the mistake that back-off is obtained Rate curve.Wherein, 128 planispheres of above-mentioned optimization meet：Annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 20,20,20,20,24 and 24.Phase adjustment algorithm is referred to described in S201-S206 Adjacent constellation point phase summation algorithm.
Can be so that bit error rate performance is obtained after carrying out digital modulation using 128 planispheres after optimization from Fig. 6 To improvement, while carrying out error code after digital modulation using 128 planispheres and phase adjustment algorithm after optimization Rate performance is further improved.
In the figure 7, order of modulation is that 8, DVB-S2X is represented using PNC algorithms and existing 256 points The ber curve that APSK constellation figure is obtained；New Radius represent 64 using PNC algorithms and optimization The ber curve that point APSK constellation figure is obtained；New Radius (back off) are represented and are used PNC algorithms With 256 APSK constellation figures of optimization, it is considered to the ber curve that back-off is obtained；DP represents use The ber curve that phase-modulation algorithm and 256 APSK constellation figures of optimization are obtained；DP(back off) Represent 256 APSK constellation figures using phase-modulation algorithm and optimization, it is considered to the mistake that back-off is obtained Rate curve.Wherein, 256 planispheres of above-mentioned optimization meet：Annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.Phase adjustment algorithm refers to S101-S104 The algorithm of the phase summation of described adjacent constellation point.
Can be so that bit error rate performance is obtained after carrying out digital modulation using 256 planispheres after optimization from Fig. 7 To improvement, while carrying out error code after digital modulation using 256 planispheres and phase adjustment algorithm after optimization Rate performance is further improved.
In fig. 8, order of modulation is that 10, ideal PNC are represented using PNC algorithms and existing 1024 points The ber curve that APSK constellation figure is obtained；DP represents 1024 points using phase-modulation algorithm and optimization The ber curve that APSK constellation figure is obtained.Wherein, 256 planispheres of above-mentioned optimization meet：1024 Point APSK constellation figure in annulus quantity be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 32.Phase adjustment algorithm Refer to the algorithm that the phase of the adjacent constellation point described in S101-S104 is sued for peace.
Can be with while carrying out numeral using 1024 planispheres and phase adjustment algorithm after optimization from Fig. 8 After modulation bit error rate performance be improved significantly.
It is, using the ber curve figure of 64QAM digital modulations, existing 64 to be used in Fig. 7 referring to Fig. 9 Point QAM constellation carries out digital modulation.MCS26 and MCS27 are compiled in representing 802.11ad communication protocols The numbering of code modulation system, 3/4 code rate of MCS26 (64QAM 3/4) (w/o PN) expression uses, Ber curve when AWGN is disturbed, MCS26 (DP) (w PN) are only existed in the absence of phase noise interference There is the ber curve using phase-modulation algorithm, MCS27 in the case that phase noise is disturbed in expression (64QAM 13/16) (w/o PN) table is only deposited using 13/16 code rate, in the absence of phase noise interference Ber curve when AWGN is disturbed, MCS27 (linear PNC) (w PN) represents there is phase Noise jamming simultaneously uses the ber curve after phase noise reduction algorithm, MCS27 (DP) (w PN) table Show the ber curve for existing and phase-modulation algorithm being used in the case that phase noise is disturbed.
From figure 7 it can be seen that when SNR is more than 23dB, being adjusted using 64 QAM constellations and phase After algorithm processed the bit error rate be improved significantly.
Optionally, the Ditital modulation method also includes：The transmitting terminal obtains link-quality, in the chain Road quality meet it is pre-conditioned in the case of, perform the transmitting terminal by the phase adjustment of the M constellation point, Specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+ Φ1+Φ2+Φ3+…+ΦM。
Specifically, link-quality can be obtained by way of estimating or receiving terminal feeds back, link-quality Can be SNR or RSSI (Received Signal Strength Indication, received signal strength indicator, Abbreviation RSSI) etc., particular content and acquisition modes of the present invention not to link-quality are defined.
Exemplary, when order of modulation is 6, adjusted using the numeral of the embodiment of the present invention according to 64 planispheres When method processed is modulated, in the case where the signal to noise ratio of bit sequence is more than 23dB, calculated using phase-modulation Bit error rate performance after method and/or the modulation of the planisphere of optimization is better than existing 64 planisphere digital modulation sides Method.
Optionally, the Ditital modulation method also includes：
The transmitting terminal sends phase adjustment configured information to receiving terminal, and the phase adjustment configured information is used for The receiving terminal is indicated to enter horizontal phasing control.
Specifically, in order to support flexible digital modulation, compatible different receiving terminal, transmitting terminal can be every Phase adjustment configured information is carried in one frame, phase adjustment configured information is used to indicate receiving terminal to enter line phase tune System.Wherein, phase adjustment configured information can be referred to by 1 in PHY or MAC header bit Show, for example：The bit represents that receiving terminal starts phase-modulation when being 1；Or the bit be 0 when table Show that receiving terminal starts phase adjustment.Phase adjusting method includes：The N ranks modulated signal that transmitting terminal is sent is moved Except carrier wave, the M phase of constellation point respectively θ is obtained1、θ2、…、θM；Wherein, M and N are Integer not less than 1；The M constellation point is carried out the phase respectively θ after phase-modulation1-θ0、θ2-θ1、…、θM-θM-1；M constellation point after the phase adjustment is carried out according to default planisphere Demapping obtains M bit group；Wherein, each bit group includes N number of bit；By the M bit Group carries out decoding process and obtains initial data.
It is a kind of schematic flow sheet of digital demodulation method provided in an embodiment of the present invention referring to Figure 10, at this In inventive embodiments, methods described includes：
S1001, receiving terminal receive N rank modulated signals, obtain the M phase of constellation point, the M star The phase of seat point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1.
Specifically, the generation method of N rank modulated signals is：Transmitting terminal carries out coded treatment and obtains to initial data To bit sequence；Bit sequence is divided into M bit group, N number of bit is included in each bit group；Its In, M and N is the integer more than or equal to 1；Planetary is entered to M bit group according to default planisphere Mapping, obtains M constellation point；The phase for obtaining M constellation point is respectively Φ1、Φ2、…、ΦM, And by the M phase adjustment of constellation point be Φ0+Φ1、Φ0+Φ1+Φ2、…、Φ0+Φ1+Φ2+Φ3、… ΦM；M constellation point after phase adjustment is loaded on corresponding carrier wave and obtains modulated signal.Receiving terminal M star is obtained after the treatment such as channel equalization, down coversion being carried out to the modulated signal that transmitting terminal sends The phase of seat point is respectively θ1、θ2、…、θM。
The M constellation point is entered horizontal phasing control by S1002, the receiving terminal, specially：By θ1Adjustment It is θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMIt is adjusted to θM-θM-1, wherein θ0It is 0 or One phase of the previous symbol of constellation point.
Specifically, because the phase of constellation point is obtained after Phase Stacking is processed, inverse operation is carried out during demodulation The true phase for obtaining constellation point is：θ1-θ0、θ2-θ1、…、θM-θM-1。θ0It is M constellation point In first phase of a upper symbol of constellation point, a upper symbol can be pilot tone training in symbol, Symbol or GI (Guard Interval, protection interval, abbreviation GI) in training sequence.
S1003, the receiving terminal click through M constellation after the phase adjustment according to default planisphere Row demapping obtains M bit group；Wherein, each bit group includes N number of bit.
Specifically, default planisphere can be existing QAM constellation, existing APSK constellation figure, The QAM constellation of optimization or the APSK constellation figure of optimization, or other any form of planispheres, The present invention is not restricted, it is only necessary to ensure the identical planisphere for using of receiving terminal and transmitting terminal.Need What is illustrated is that the phase-modulation of receiving terminal is the inverse process of transmitting terminal phase-modulation.
The M bit group is carried out decoding process and obtains initial data by S1004, the receiving terminal.
Optionally, the digital demodulation method also includes：
The receiving terminal is performed described by described in the case where needing to enter horizontal phasing control to M constellation point M constellation point enters horizontal phasing control, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1、…、 By θMIt is adjusted to θM-θM-1。
Specifically, receiving terminal can judge whether to need to carry out phase difference office according to the modulation system of transmitting terminal Reason, transmitting terminal uses phase adjustment, and receiving terminal then needs to use the phase adjustment of inverse operation accordingly.
Optionally, the receiving terminal includes in the case where needing to enter horizontal phasing control to M constellation point：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Click through horizontal phasing control；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control.
Specifically, in order to support flexible digital modulation, compatible different receiving terminal, transmitting terminal can be every Phase adjustment configured information is carried in one frame, phase adjustment configured information is used to indicate receiving terminal to be adjusted using phase It is whole to be demodulated.Wherein, phase adjustment configured information can be by 1 in PHY or MAC header bit Position is indicated, for example：The bit represents that receiving terminal starts phase adjustment when being 1；Vice versa.
Or, transmitting terminal and receiving terminal are arranged using the condition of phase adjustment, and the type of such as MCS is default During type, such as when preset kind is MCS26 and MCS27, transmitting terminal uses phase adjustment, receiving terminal Use the phase adjustment of inverse process.How the embodiment of the present invention arranges transmitting-receiving two-end to use the bar of phase adjustment Part is not restricted, for example order of modulation, link-quality etc..
It is a kind of structural representation of digital modulation device provided in an embodiment of the present invention referring to Figure 11, at this In inventive embodiments, the digital modulation device includes：Coding module 1101, grouping module 1102, constellation Mapping block 1103, phase acquisition module 1104, phase modulation module 1105 and modulation module 1106.
Coding module 1101, bit sequence is obtained for carrying out coded treatment to initial data.
Grouping module 1102, waits to adjust for the bit sequence that the coding module is input into be divided into M Bit group processed, includes N number of bit in each bit group to be modulated；Wherein, M and N are more than or equal to 1 Integer.
Constellation mapping block 1103, for the M being input into the grouping module according to default planisphere Individual bit group to be modulated carries out constellation mapping, obtains M constellation point.
Phase acquisition module 1104, for obtaining the M constellation point that the constellation mapping block is input into Phase, the phase of the M constellation point is respectively Φ1、Φ2、…、ΦM。
Phase adjusting module 1105, the phase of the M constellation point for the phase acquisition module to be obtained Position adjustment, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦM It is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1Constellation point before One phase of symbol.
Modulation module 1106, for M constellation point after the phase adjustment that is input into the phase adjusting module It is modulated, obtains N rank modulated signals.
Optionally, the default planisphere includes：QAM constellation or APSK constellation figure.
Optionally, digital modulation device also includes：
Constellation configuration module, for generating the default planisphere, according to default bit mapping mode Bit group to be mapped comprising N number of bit is mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
Optionally, digital modulation device also includes：
Judge module, for obtaining link-quality, the link-quality meet it is pre-conditioned in the case of, The phase adjusting module is triggered to start working.
Optionally, digital modulation device also includes：
Sending module, for sending phase adjustment configured information, the phase adjustment configured information to receiving terminal For indicating the receiving terminal to enter horizontal phasing control.
The embodiment of the present invention and embodiment of the method one are based on same design, and the technique effect that it brings is also identical, The description of embodiment of the method one is specifically refer to, here is omitted.
Figure 12 is participated in, is a kind of structural representation of digital demodulating apparatus provided in an embodiment of the present invention, at this In inventive embodiments, the digital demodulating apparatus include：Decoding module 1201, phase adjusting module 1202, De-mapping module 1203 and decoder module 1204.
Decoding module 1201, for receiving N rank modulated signals, obtains the M phase of constellation point, the M The phase of individual constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1.
Phase adjusting module 1202, the M constellation point for the decoding module to be obtained enters line phase Adjustment, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Constellation point previous symbol phase.
Phase De-mapping module 1203, for the phase modulation module to be carried out into phase according to default planisphere M constellation point after the adjustment of position carries out demapping and obtains M bit group；Wherein, each bit group includes N Individual bit.
Decoder module 1204, the M bit group for the phase De-mapping module to be obtained is solved Code treatment obtains initial data.
Optionally, institute's digital demodulating apparatus also include：
Judge module, in the case where needing to carry out phase difference treatment to M constellation point, triggering institute State phase adjusting module start-up operation.
Optionally, the judge module specifically for：
The judge module specifically for：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Horizontal phasing control is clicked through, the phase adjusting module is triggered and is started working；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control, triggers the phase adjusting module and starts working.
The embodiment of the present invention and embodiment of the method two are based on same design, and the technique effect that it brings is also identical, tool Body principle refer to the description of embodiment of the method two, and here is omitted.
It is a kind of structural representation of digital modulation device provided in an embodiment of the present invention referring to Figure 13, at this In inventive embodiments, digital modulation device includes processor 131, memory 133 and communication interface 132.It is logical Letter interface 132 is used to be communicated with external equipment.The quantity of the processor in digital modulation device can be One or more.In some embodiments of the present invention, processor 131, memory 133 and communication interface 132 Can be connected by bus or other modes.Digital modulation device can be used for performing the method shown in Fig. 2.Close The implication of the term being related in the present embodiment and citing, may be referred to the corresponding embodiments of Fig. 2.Herein not Repeat again.
Wherein, store program codes in memory 133.Processor 131 is used to call and deposit in memory 132 The program code of storage, for performing following operation：
Coded treatment is carried out to initial data and obtains bit sequence；
The bit sequence is divided into M bit group to be modulated, comprising N number of in each bit group to be modulated Bit；Wherein, M and N are the integer more than or equal to 1；
Constellation mapping is carried out to the M bit group to be modulated according to default planisphere, M constellation is obtained Point；
The phase of the M constellation point is obtained, the phase of the M constellation point is respectively Φ1、Φ2、…、 ΦM；
By the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2Adjustment It is Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1The previous symbol of constellation point phase；
M constellation point after phase adjustment is modulated, N rank modulated signals are obtained.
In some embodiments of the invention, the default planisphere includes：Quadrature amplitude modulation QAM stars Seat figure or Amplitude Phase Keying APSK constellation figure.
In some embodiments of the invention, processor 131 is performed and described carries out coded treatment to initial data Before obtaining bit sequence, it is additionally operable to perform：
The default planisphere is generated, treating comprising N number of bit is reflected according to default bit mapping mode Bit group is penetrated to be mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
In some embodiments of the invention, processor 131 is additionally operable to perform：
Obtain link-quality, the link-quality meet it is pre-conditioned in the case of, perform the M star The phase adjustment of seat point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2、…、 By ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM。
In some embodiments of the invention, processor 131 is additionally operable to perform：
Phase adjustment configured information is sent to receiving terminal, the phase adjustment configured information is used to indicate described connecing Receiving end enters horizontal phasing control.
It is a kind of structural representation of digital demodulating apparatus provided in an embodiment of the present invention referring to Figure 14, at this In inventive embodiments, digital demodulating apparatus include processor 141, memory 143 and communication interface 142.It is logical Letter interface 142 is used to be communicated with external equipment.The quantity of the processor in digital demodulating apparatus can be One or more.In some embodiments of the present invention, processor 141, memory 143 and communication interface 142 Can be connected by bus or other modes.Digital demodulating apparatus can be used for performing the method shown in Figure 10.Close The implication of the term being related in the present embodiment and citing, may be referred to the corresponding embodiments of Figure 10.Herein not Repeat again.
Wherein, store program codes in memory 143.Processor 141 is used to call and deposit in memory 142 The program code of storage, for performing following operation：
N rank modulated signals are received, the M phase of constellation point, the phase point of the M constellation point is obtained Wei not θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
The M constellation point is entered into horizontal phasing control, specially：By θ1It is adjusted to θ1-θ0, by θ2Adjust Whole is θ2-θ1..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Constellation The phase of the previous symbol of point
M constellation point after the phase adjustment is carried out by demapping according to default planisphere and obtains M ratio Special group；Wherein, each bit group includes N number of bit；
The M bit group is carried out into decoding process and obtains initial data.
In some embodiments of the invention, processor 141 is additionally operable to perform：
In the case where needing to enter horizontal phasing control to M constellation point, execution carries out the M constellation point Phase adjustment, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMAdjustment It is θM-θM-1。
In some embodiments of the invention, processor 141 performs and described is needing to carry out M constellation point Include in the case of phase adjustment：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Click through horizontal phasing control；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control.
The embodiment of the present invention additionally provides a kind of communication system, including：Digital modulation device and digital demodulation are filled Put, the digital modulation device obtains bit sequence for carrying out coded treatment to initial data；By the ratio Special sequence is divided into M bit group to be modulated, and N number of bit is included in each bit group to be modulated；Wherein, M and N are the integer more than or equal to 1；The M bit group to be modulated is entered according to default planisphere Planetary maps, and obtains M constellation point；Obtain the phase of the M constellation point, the M constellation The phase of point is respectively Φ1、Φ2、…、ΦM；By the phase adjustment of the M constellation point, specially： By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+ Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1The previous symbol of constellation point phase； M constellation point after phase adjustment is modulated, N rank modulated signals are obtained；
The digital demodulating apparatus are used to receive the N rank modulated signals that the digital modulation device sends, and obtain The M phase of constellation point, the phase of the M constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；The M constellation point is entered into horizontal phasing control, specially：By θ 1 It is adjusted to θ1-θ0, θ 2 is adjusted to θ 2- θ 1 ..., by θMIt is adjusted to θM-θM-1；Wherein, θ0 It is 0, or phase is θ1Constellation point previous symbol phase；The receiving terminal is according to default constellation M constellation point after the phase adjustment is carried out demapping and obtains M bit group by figure；Wherein, each ratio Spy's group includes N number of bit；The M bit group is carried out decoding process and obtains initial data by the receiving terminal.
The embodiment of the present invention can refer to the description of embodiment of the method one and two, and here is omitted.
One of ordinary skill in the art will appreciate that all or part of flow in realizing above-described embodiment method, Computer program be can be by instruct the hardware of correlation to complete, described program can be stored in a calculating In machine read/write memory medium, 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 for magnetic disc, CD, read-only memory (Read-Only Memory, ) or random access memory (Random Access Memory, RAM) etc. ROM.
Above disclosed is only a kind of preferred embodiment of the invention, can not limit this hair with this certainly Bright interest field, one of ordinary skill in the art will appreciate that realizing all or part of stream of above-described embodiment Journey, and the equivalent variations made according to the claims in the present invention, still fall within the covered scope of invention.

Claims (17)

1. a kind of Ditital modulation method, it is characterised in that including：
Transmitting terminal carries out coded treatment and obtains bit sequence to initial data；
The bit sequence is divided into M bit group to be modulated, each bit group to be modulated by the transmitting terminal In include N number of bit；Wherein, M and N are the integer more than or equal to 1；
The transmitting terminal carries out constellation mapping according to default planisphere to the M bit group to be modulated, obtains To M constellation point；
The transmitting terminal obtains the phase of the M constellation point, and the phase of the M constellation point is respectively Φ1、Φ2、…、ΦM；
The transmitting terminal by the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1、 By Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1The previous symbol of constellation point phase；
The transmitting terminal is modulated to M constellation point after phase adjustment, obtains N rank modulated signals.
2. the method for claim 1, it is characterised in that the default planisphere includes：It is orthogonal Modulation and Amplitude Modulation QAM constellation, or Amplitude Phase Keying APSK constellation figure.
3. the method for claim 1, it is characterised in that the transmitting terminal is compiled to initial data Before code treatment obtains bit sequence, also include：
The transmitting terminal generates the default planisphere, will be comprising N number of according to default bit mapping mode The bit group to be mapped of bit is mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
4. the method for claim 1, it is characterised in that also include：
The transmitting terminal obtains link-quality, the link-quality meet it is pre-conditioned in the case of, perform institute Transmitting terminal is stated by the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2 It is adjusted to Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM。
5. the method as described in claim 1-4 any one, it is characterised in that also include：
The transmitting terminal sends phase adjustment configured information to receiving terminal, and the phase adjustment configured information is used for The receiving terminal is indicated to enter horizontal phasing control.
6. a kind of digital demodulation method, it is characterised in that including：
The N rank modulated signals that receiving terminal receiving end/sending end sends, obtain the M phase of constellation point, the M The phase of individual constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
The M constellation point is entered horizontal phasing control by the receiving terminal, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Constellation point previous symbol phase；
M constellation point after the phase adjustment is carried out demapping by the receiving terminal according to default planisphere Obtain M bit group；Wherein, each bit group includes N number of bit；
The M bit group is carried out decoding process and obtains initial data by the receiving terminal.
7. method as claimed in claim 6, it is characterised in that also include：
The receiving terminal performs the receiving terminal in the case where needing to enter horizontal phasing control to M constellation point The M constellation point is entered into horizontal phasing control, specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMIt is adjusted to θM-θM-1。
8. method as claimed in claim 7, it is characterised in that the receiving terminal is being needed to M constellation Include in the case of clicking through horizontal phasing control：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Click through horizontal phasing control；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control.
9. a kind of digital modulation device, it is characterised in that including：
Coding module, bit sequence is obtained for carrying out coded treatment to initial data；
Grouping module, for the bit sequence that the coding module is input into be divided into M ratio to be modulated Special group, N number of bit is included in each bit group to be modulated；Wherein, M and N are whole more than or equal to 1 Number；
Constellation mapping block, the M for being input into the grouping module according to default planisphere is treated Modulation bit group carries out constellation mapping, obtains M constellation point；
Phase acquisition module, the phase of the M constellation point for obtaining the constellation mapping block input, The phase of the M constellation point is respectively Φ1、Φ2、…、ΦM；
Phase adjusting module, the phase of the M constellation point for the phase acquisition module to be obtained is adjusted It is whole, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2It is adjusted to Φ0+Φ1+Φ2..., by ΦMAdjustment It is Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1Constellation point it is previous The phase of symbol；
Modulation module, is carried out for M constellation point after the phase adjustment that is input into the phase adjusting module Modulation, obtains N rank modulated signals.
10. device as claimed in claim 9, it is characterised in that the default planisphere includes：Just Hand over Modulation and Amplitude Modulation QAM constellation, or Amplitude Phase Keying APSK constellation figure.
11. devices as claimed in claim 9, it is characterised in that also include：
Constellation configuration module, for generating the default planisphere, according to default bit mapping mode Bit group to be mapped comprising N number of bit is mapped in the constellation point of the default planisphere；
Wherein, N=6, the planisphere is 64 APSK constellation figures, in 64 APSK constellation figures The quantity of annulus is 4, and the radius of each annulus is respectively r ± 10%, 2r ± 10%, 3r from inside to outside ± 10% and 4r ± 10%, from inside to outside the quantity of the constellation point on each annulus be respectively 8,16,20 and 20；Or
N=7, the planisphere is 128 APSK constellation figures, annulus in 128 APSK constellation figures Quantity be 6, from inside to outside the radius of each annulus be respectively r ± 10%, 1.51r ± 10%, 2.02r ± 10%, 2.53r ± 10%, 3.04r ± 10% and 3.55r ± 10%, the from inside to outside constellation point on each annulus Quantity be respectively 8,16,20 and 20；Or
N=8, the planisphere is 256 APSK constellation figures, annulus in 256 APSK constellation figures Quantity be 8, from inside to outside the radius of each annulus be respectively r ± 10%, 1.383r ± 10%, 1.766r ± 10%th, 2.149r ± 10%, 2.532r ± 10%, 2.915r ± 10%, 3.298r ± 10%, 3.681r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside；Or
N=10, the planisphere is 1024 APSK constellation figures, in 1024 APSK constellation figures The quantity of annulus be 32, from inside to outside the radius of each annulus be respectively r ± 10%, 1.2224r ± 10%, 1.4448r ± 10%, 1.6672r ± 10%, 1.8897r ± 10%, 2.1121r ± 10%, 2.3345r ± 10%, 2.5569r ± 10%, 2.7793r ± 10%, 3.0017r ± 10%, 3.2242r ± 10%, 3.4466r ± 10%, 3.6690r ± 10%, 3.8914r ± 10%, 4.1138r ± 10%, 4.3362r ± 10%, 4.5587r ± 10%, 4.7811r ± 10%, 5.0035r ± 10%, 5.2259r ± 10%, 5.4483r ± 10%, 5.6707r ± 10%, 5.8932r ± 10%, 6.1156r ± 10%, 6.3380r ± 10%, 6.5604r ± 10%, 6.7828r ± 10%, 7.0052r ± 10%, 7.2277r ± 10%, 7.4501r ± 10%, 7.6725r ± 10%, 7.8949r ± 10%, The quantity of the constellation point on each annulus is respectively 32 from inside to outside.
12. devices as claimed in claim 9, it is characterised in that also include：
Judge module, for obtaining link-quality, the link-quality meet it is pre-conditioned in the case of, The phase adjusting module is triggered to start working.
13. device as described in claim 9-12 any one, it is characterised in that also include：
Sending module, for sending phase adjustment configured information, the phase adjustment configured information to receiving terminal For indicating the receiving terminal to enter horizontal phasing control.
A kind of 14. digital demodulating apparatus, it is characterised in that including：
Decoding module, for receiving N rank modulated signals, obtains the M phase of constellation point, the M The phase of constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
Phase adjusting module, the M constellation point for the decoding module to be obtained enters horizontal phasing control, Specially：By θ1It is adjusted to θ1-θ0, by θ2It is adjusted to θ2-θ1..., by θMIt is adjusted to θM-θM-1； Wherein, θ0It is 0, or phase is θ1Constellation point previous symbol phase；
De-mapping module, after the phase modulation module is entered into horizontal phasing control according to default planisphere M constellation point carry out demapping and obtain M bit group；Wherein, each bit group includes N number of bit；
Decoder module, the M bit group for the phase De-mapping module to be obtained is carried out at decoding Reason obtains initial data.
15. devices as claimed in claim 14, it is characterised in that also include：
Judge module, in the case where needing to carry out phase difference treatment to M constellation point, triggering institute State phase adjusting module start-up operation.
16. devices as claimed in claim 15, it is characterised in that the judge module specifically for：
When receiving the phase adjustment configured information that the transmitting terminal sends, it is determined that needing to the M constellation Horizontal phasing control is clicked through, the phase adjusting module is triggered and is started working；Or
When the type of the modulating-coding MCS of the transmitting terminal is preset kind, it is determined that needing to the M Individual constellation point enters horizontal phasing control, triggers the phase adjusting module and starts working.
A kind of 17. digital communication systems, it is characterised in that including：Digital modulation device and digital demodulation are filled Put, the digital modulation device obtains bit sequence for carrying out coded treatment to initial data；
The bit sequence is divided into M bit group to be modulated, comprising N number of in each bit group to be modulated Bit；Wherein, M and N are the integer more than or equal to 1；
Constellation mapping is carried out to the M bit group to be modulated according to default planisphere, M constellation is obtained Point；
The phase of the M constellation point is obtained, the phase of the M constellation point is respectively Φ1、Φ2、…、 ΦM；
By the phase adjustment of the M constellation point, specially：By Φ1It is adjusted to Φ0+Φ1, by Φ2Adjustment It is Φ0+Φ1+Φ2..., by ΦMIt is adjusted to Φ0+Φ1+Φ2+Φ3+…+ΦM；Wherein, Φ0It is 0, or Φ0For phase is Φ1The previous symbol of constellation point phase；
M constellation point after phase adjustment is modulated, N rank modulated signals are obtained；
The digital demodulating apparatus are used to receive the N rank modulated signals that the digital modulation device sends, and obtain The M phase of constellation point, the phase of the M constellation point is respectively θ1、θ2、…、θM；Wherein, M and N are the integer not less than 1；
The M constellation point is entered into horizontal phasing control, specially：θ 1 is adjusted to θ1-θ0, by θ 2 Be adjusted to θ 2- θ 1 ..., by θMIt is adjusted to θM-θM-1；Wherein, θ0It is 0, or phase is θ1Star The phase of the previous symbol of seat point；
M constellation point after the phase adjustment is carried out demapping by the receiving terminal according to default planisphere Obtain M bit group；Wherein, each bit group includes N number of bit；
The M bit group is carried out decoding process and obtains initial data by the receiving terminal.
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