CN110417451A - A kind of incremental emitting antenna combination selection method of generalized space modulation - Google Patents
A kind of incremental emitting antenna combination selection method of generalized space modulation Download PDFInfo
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- CN110417451A CN110417451A CN201910756774.XA CN201910756774A CN110417451A CN 110417451 A CN110417451 A CN 110417451A CN 201910756774 A CN201910756774 A CN 201910756774A CN 110417451 A CN110417451 A CN 110417451A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
- H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/20—Modulator circuits; Transmitter circuits
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Abstract
It is modulated the invention discloses a kind of generalized space and is incremented by emitting antenna combination selection method, defined generalized spatial modulation system first, calculate the norm of each antenna combination, the maximum antenna combination of norm is then added to candidate collection, then calculate remaining antenna combination and candidate collectionCorrelation, will and candidate collectionThe smallest antenna combination of correlation is added to candidate collection, then continue to calculate remaining antenna combination and candidate collectionCorrelation, repeat above procedure, until candidate collectionIn antenna combination quantity meet the requirements, obtain final emitting antenna combination set.The selection method that the present invention uses is easy to operate, and accuracy is high, is able to solve the high problem of the antenna selecting method complexity of generalized spatial modulation system.
Description
Technical field
The present invention relates to antenna combining techniques field, specially a kind of generalized space, which is modulated, is incremented by emitting antenna combination selection
Method.
Background technique
With the development of mobile communication technology, the 5G epoch at hand, extensive multiple-input and multiple-output (Multiple-
Input-Multiple-Output, MIMO) key technology one of of the technology as 5G mobile cellular network, by cell
The a large amount of antenna of base station deployment forms huge aerial array, greatly improves channel capacity and the availability of frequency spectrum, in recent years
Through the research hotspot for becoming wireless communication field.Traditional MIMO technology makes full use of all antenna simultaneous transmission data, passes through
Selection transmission appropriate or pre-coding matrix, can make mimo system be multiplexed and be sent diversity gain.However, not
Pipe is spatial reuse or space diversity technology, all there are some disadvantages.First, multiple transmitting antennas, which send data simultaneously, to be drawn
Enter interchannel interference (Inter-Channel Interference, ICI), especially in extensive mimo system, problem is tighter
Weight.Second, a large amount of transmitting antenna works at the same time the stationary problem between antenna must be taken into consideration, and antenna amount is more, and synchronization is more multiple
It is miscellaneous.Third, all antenna simultaneous transmission data, needs to use a large amount of radio frequency link, not only will increase base station deployment at
This, can also improve energy consumption.Therefore next-generation mimo system design needs to relax day line locking in view of reducing complexity
It is required that and ICI, also to reduce the lower deployment cost of transmitting terminal radio frequency link, improve energy while keeping high spectral efficiency
Efficiency.In view of above-mentioned factor, spatial modulation (Spatial Modulation, SM) is considered as that very promising can apply
In one of the transmission plan of mimo system.SM system only activates an antenna to transmit data at any time, can keep away completely
Exempt from ICI, and do not need to day line locking, it is only necessary to which a radio frequency link transmits data, and in addition these characteristics allow SM to go to set
Count single stream receiver of low complex degree.In addition to this, in SM system, the position of transmitting antenna in space is taken as one
Point information source, referred to as spatial symbol, establishing one-to-one mapping by the information bit that transmitting antenna is indexed and sent can be with
It obtains, which can be improved the spectrum efficiency of system.These features of SM allow it in spectrum efficiency and energy efficiency
Between reach compromise, become one of the candidate of 5G cellular network communication design.
Although SM system can use the spatial position of transmitting antenna to increase the rate of information throughput, but transmitting antenna
Quantity must be 2 power side, and compared to space multiplexing technique, spectrum efficiency is declined, multiple with space to reach
With the identical spectrum efficiency of technology, it is necessary to which deployment is compared to the more transmitting antennas of traditional MIMO technology.In order to avoid SM system
It unites and the quantity of transmitting antenna is limited, generalized space modulates (Generalised Spatial Modulation, GSM) technology
It is suggested.Gsm system activates more antennas with the identical data symbol of simultaneous transmission at each moment, and spatial symbol is mapped in
It activates in antenna combination, it is only necessary to which antenna combination quantity is 2 power side.It realizes and antenna required for SM same frequency spectrum efficiency
Quantity is much less, simultaneously as every activation antenna emits identical data symbol, ICI equally can be to avoid, and free
Between diversity effect, the bit error rate of system can be reduced.
In actual mimo system, since there are barriers for signal transmission path, so that can have correlation between channel
Property, the capacity decline and error performance that may result in system deteriorate.Antenna Selection Technology is that one kind can improve systematicness
System performance can be improved by choosing the small antenna set of correlation in the effective means of energy.Rajashekar R et al. shows
The symbol error rate performance of SM system can be improved in emitting antenna selecting technology, and the Euclidean distance for having studied low complex degree is excellent
Change day line options (Eucidean Distance Optimized Antenna Selection, EDAS) algorithm and capacity optimization
Its line options (Capacity Optimized Antenna Selection, COAS) algorithm, the algorithm of proposition not only compared to
Traditional SM system has significant signal-to-noise ratio (SNR) gain, but also better than the biography for using day line options under the low SNR in
System mimo system.Pair-wise error probability is applied in the day line options of SM system by Zhou Z et al., is proposed a kind of based on pairs of
In addition to this low complex degree antenna selecting plan of error probability also proposes a kind of new antenna selection based on Antenna Correlation
Method.Antenna selection problem in SM system is established as combinatorial optimization problem by Sun Z et al., proposes the day line selection based on cross entropy
Scheme is selected, the search complexity of algorithm is significantly reduced.So far, most of algorithms are both for SM system, Rajashekar
R et al. for the first time applies EDAS algorithm in gsm system, shows to obtain and use using the gsm system of EDAS algorithm
The identical emission diversity gain of SM system of EDAS algorithm.
Summary of the invention
It is modulated the purpose of the present invention is to provide a kind of generalized space and is incremented by emitting antenna combination selection method, on solving
State the problem of proposing in background technique.
To achieve the above object, the invention provides the following technical scheme: a kind of generalized space, which is modulated, is incremented by transmission antenna group
Selection method is closed, the following steps are included:
A, generalized spatial modulation system is defined first, calculates the norm η of each antenna combinationk；
B, the maximum antenna combination of norm is then added to candidate collection Φ, then calculates remaining antenna combination and candidate
The correlation of set Φ will be added to candidate collection Φ with the smallest antenna combination of candidate collection Φ correlation；
C, then continue to calculate the correlation of remaining antenna combination and candidate collection Φ；
D, above procedure is repeated, until the antenna combination quantity in candidate collection Φ meets the requirements, obtains final transmitting
Antenna combination set.
Preferably, the corresponding channel status H of each emitting antenna combination is calculated firsti, then calculate each antenna combination
Channel norm ηkIt is as follows:
ηk=| | Hk||F
Wherein, k ∈ { 1,2 ..., l }, F are norm, HkFor k-th of emitting antenna combination channel matrix.
Preferably, the superposition H of the corresponding channel column vectors of i-th of emitting antenna combinationiAre as follows:
Wherein,Indicate the 1st column of i-th of emitting antenna combination channel matrix.
Preferably, an empty candidate collection Φ is defined, the maximum antenna combination of F norm is found out, remembers the maximum day of norm
Line combinesThe antenna combination is added in Φ.
Preferably, remaining antenna combination and the maximum antenna combination of norm are calculatedAngle thetamaxi, find and
HmaxThe maximum antenna combination of angle, adds it in candidate collection Φ, angle thetamaxiIt calculates as follows:
Wherein,Indicate any one antenna combination in remaining l-1 antenna combination.
Preferably, the angle of all antenna combinations in remaining l-2 antenna combination and Φ, each remaining day are calculated
Line combination is minimized after calculating with the antenna combination in Φ, will be minimum as the similarity degree of the antenna combination and set Φ
Value is maximum, i.e. the smallest antenna combination of similarity degree is added in candidate collection Φ.
Preferably, when in candidate collection Φ antenna combination number reach ncWhen a, stop circulation, the antenna combination in set is
Activate antenna selecting plan.
Preferably, generalized spatial modulation system has ntA transmitting antenna and nrA receiving antenna has n in each time slotpRoot
Antenna is activated for transmission information bit, and all possible activation antenna combination hasIt is a；Channel declines for flat Rayleigh
Correlated channels are fallen, receiving end has ideal channel estimation to receive with synchronous.
Preferably, nrThe received signal vector y of × 1 dimension are as follows:
Y=Hx+n
Wherein, x ntThe emission signal vector of × 1 dimension；H is nr×ntThe channel matrix of dimension；N is nrThe white Gaussian of × 1 dimension
Noise, mean value 0, variance σ2。
Compared with prior art, the beneficial effects of the present invention are: the selection method that uses of the present invention is easy to operate, accuracy
Height is able to solve the high problem of the antenna selecting method complexity of generalized spatial modulation system.
Detailed description of the invention
Fig. 1 is that transmitting of the invention receives structural block diagram；
Figure compared with Fig. 2 is present invention bit error rate corresponding with no day line options；
Figure compared with Fig. 3 is present invention bit error rate corresponding with no day line options；
Figure compared with Fig. 4 is present invention bit error rate corresponding with no day line options；
Figure compared with Fig. 5 is present invention bit error rate corresponding with no day line options.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, the present invention provides a kind of technical solution: setting one has ntA transmitting antenna and nrA receiving antenna
Generalized spatial modulation system has n in each time slotpRoot antenna is activated for transmission information bit, all possible activation
Antenna combination hasIt is a；Channel be flat Rayleigh fading correlated channels, receiving end have ideal channel estimation with synchronize connect
It receives, receives signal are as follows:
Y=Hx+n
Wherein, x ntThe emission signal vector of × 1 dimension；H is nr×ntThe channel matrix of dimension；N is nrThe white Gaussian of × 1 dimension
Noise, mean value 0, variance σ2；Y is nrThe received signal vector of × 1 dimension.
A kind of generalized space of the present invention, which is modulated, is incremented by emitting antenna combination selection method, the specific steps are as follows:
A, the corresponding channel status of each emitting antenna combination is calculated；
The superposition H of the corresponding channel column vectors of i-th of emitting antenna combinationiAre as follows:
Wherein,Indicate the 1st column of i-th of emitting antenna combination channel matrix；
B, the channel norm η of each antenna combination is calculatedkIt is as follows:
ηk=| | Hk||F
Wherein, k ∈ { 1,2 ..., l }, a shared l antenna combination, F is norm, HkBelieve for k-th of emitting antenna combination
Road matrix；
C, an empty candidate collection Φ is defined, the maximum antenna combination of F norm is found out, remembers the maximum antenna combination of norm
It isThe antenna combination is added in Φ；
D, remaining antenna combination and the maximum antenna combination of norm are calculatedAngle thetamaxi；
Angle thetamaxiAre as follows:
Wherein,Indicate any one antenna combination in remaining l-1 antenna combination.It finds and HmaxAngle is most
Big antenna combination adds it in candidate collection Φ；
E, the angle of all antenna combinations in remaining l-2 antenna combination and Φ is calculated, it is calculated not need
It computes repeatedly, the antenna combination in each remaining antenna combination and Φ can obtain 2 values after calculating, and take therein
Minimum value, as the similarity degree of the antenna combination and set Φ, by minimum value maximum, the i.e. the smallest antenna combination of similarity degree
It is added in set Φ；
F, above step is repeated, when antenna combination number reaches n in candidate collection ΦcWhen a, stop circulation, candidate collection Φ
In antenna combination be activation antenna selecting plan.
Referring to Fig. 2, giving the incremental emitting antenna combination selecting party proposed by the present invention based on norm and correlation
Method, the BER performance map without antenna selecting method, wherein abscissa is the average symbol Signal to Noise Ratio (SNR) at receiving antenna, indulges and sits
It is designated as error rate BER, is emulated using Monte Carlo EGS4 method；Emulate the n usedtIt is 4, npIt is 2, nrIt is 4, constellation symbol uses
QPSK modulation.Channel is Rayleigh fading correlated channels, and antenna spacing is 0.5 λ, and angle spread is 8 °.As can be seen that introducing antenna
After selection, the error performance of system is greatly improved.It is compared with no day line options, is 10 in BER-4When, SNR is improved
3dB or so.And with the increase of SNR, the gap of the two is increasing, and the gsm system performance boost of day line options is added more
Fastly.
Referring to Fig. 3, giving the incremental emitting antenna combination selecting party proposed by the present invention based on norm and correlation
Method, the BER performance map without antenna selecting method, wherein abscissa is the average symbol Signal to Noise Ratio (SNR) at receiving antenna, indulges and sits
It is designated as error rate BER, is emulated using Monte Carlo EGS4 method；Emulate the n usedtIt is 4, npIt is 2, nrIt is 4, constellation symbol uses
QPSK modulation.Channel is Rayleigh fading correlated channels, and antenna spacing is 0.5 λ, and angle spread is 20 °.As can be seen that and Fig. 2 phase
Than the whole error performance of Fig. 3 is higher.This is because when antenna spacing is 0.5 λ, with the increase of angle spread, between antenna
Correlation weaken.It can be seen from the figure that proposing that algorithm improves the error performance of system, when the bit error rate is 10-4When, it proposes
Algorithm promotes 2dB than the system signal noise ratio of no day line options.
Referring to Fig. 4, giving the incremental emitting antenna combination selecting party proposed by the present invention based on norm and correlation
Method, the BER performance map changed without antenna selecting method with angle spread, wherein abscissa is launch angle extension, and ordinate is
Error rate BER is emulated using Monte Carlo EGS4 method；Emulate the n usedtIt is 4, npIt is 2, nrIt is 4, constellation symbol uses QPSK
Modulation.Channel is Rayleigh fading correlated channels, and antenna spacing is 0.1 λ, SNR 10dB.As can be seen that with angle spread
It improves, quickly, the BER than no day line options reduces an order of magnitude, and performance boost is it is obvious that reason for the BER decline of system
It is that angle is bigger, degree of correlation is lower.
Referring to Fig. 5, giving the incremental emitting antenna combination selecting party proposed by the present invention based on norm and correlation
Method, the BER performance map changed without antenna selecting method with antenna spacing, wherein abscissa is transmitting antenna spacing, and ordinate is
Error rate BER is emulated using Monte Carlo EGS4 method；Emulate the n usedtIt is 4, npIt is 2, nrIt is 4, constellation symbol uses QPSK
Modulation.Channel is Rayleigh fading correlated channels, and angle spread is 5 °, SNR 10dB.As can be seen that BER is equally reduced very much,
With the increase of antenna spacing, curve tends towards stability, this is that related coefficient is moved closer in 0, and channel is almost uncorrelated.
In conclusion the selection method that the present invention uses is easy to operate, accuracy is high, is able to solve generalized space modulation system
The high problem of the antenna selecting method complexity of system.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (9)
1. a kind of generalized space, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that: the following steps are included:
A, generalized spatial modulation system is defined first, calculates the norm η of each antenna combinationk；
B, the maximum antenna combination of norm is then added to candidate collection Φ, then calculates remaining antenna combination and candidate collection
The correlation of Φ will be added to candidate collection Φ with the smallest antenna combination of candidate collection Φ correlation；
C, then continue to calculate the correlation of remaining antenna combination and candidate collection Φ；
D, above procedure is repeated, until the antenna combination quantity in candidate collection Φ meets the requirements, obtains final transmitting antenna
Composite set.
2. a kind of generalized space according to claim 1, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
The corresponding channel status H of each emitting antenna combination is calculated firsti, then calculate the channel norm η of each antenna combinationkIt is as follows:
ηk=| | Hk||F
Wherein, k ∈ { 1,2 ..., l }, F are norm, HkFor k-th of emitting antenna combination channel matrix.
3. a kind of generalized space according to claim 2, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
The superposition H of the corresponding channel column vectors of i-th of emitting antenna combinationiAre as follows:
Wherein,Indicate the 1st column of i-th of emitting antenna combination channel matrix.
4. a kind of generalized space according to claim 1, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
An empty candidate collection Φ is defined, the maximum antenna combination of F norm is found out, the note maximum antenna combination of norm isIt will
The antenna combination is added in Φ.
5. a kind of generalized space according to claim 4, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
Calculate remaining antenna combination and the maximum antenna combination of normAngle thetamaxi, find and HmaxThe maximum antenna of angle
Combination, adds it in candidate collection Φ, angle thetamaxiIt calculates as follows:
Wherein,Indicate any one antenna combination in remaining l-1 antenna combination.
6. a kind of generalized space according to claim 5, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
The angle of all antenna combinations in remaining l-2 antenna combination and Φ is calculated, in each remaining antenna combination and Φ
Antenna combination is minimized after calculating, as the similarity degree of the antenna combination and set Φ, by minimum value maximum, i.e., similar journey
The smallest antenna combination is spent to be added in candidate collection Φ.
7. a kind of generalized space according to claim 1, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
When antenna combination number reaches n in candidate collection ΦcWhen a, stop circulation, the antenna combination in set is activation antenna selecting party
Case.
8. a kind of generalized space according to claim 1, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
Generalized spatial modulation system has ntA transmitting antenna and nrA receiving antenna has n in each time slotpRoot antenna is activated for passing
Defeated information bit, all possible activation antenna combination haveIt is a；Channel is flat Rayleigh fading correlated channels, is received
End has ideal channel estimation to receive with synchronous.
9. a kind of generalized space according to claim 8, which is modulated, is incremented by emitting antenna combination selection method, it is characterised in that:
nrThe received signal vector y of × 1 dimension are as follows:
Y=Hx+n
Wherein, x ntThe emission signal vector of × 1 dimension；H is nr×ntThe channel matrix of dimension；N is nrThe white Gaussian noise of × 1 dimension,
Mean value is 0, variance σ2。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112073091A (en) * | 2020-11-11 | 2020-12-11 | 华东交通大学 | Intelligent surface-assisted spatial modulation antenna selection method in high-speed rail scene |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2466790A1 (en) * | 2010-12-15 | 2012-06-20 | Alcatel Lucent | Network managing system |
| CN103701513A (en) * | 2013-12-16 | 2014-04-02 | 西安交通大学 | Transmitting antenna selection method for generalized spatial modulation system under correlated channel |
| CN107425894A (en) * | 2017-06-16 | 2017-12-01 | 电子科技大学 | Generalized spatial modulation system sending and receiving end antenna selecting method based on channel norm |
| CN107425893A (en) * | 2017-06-16 | 2017-12-01 | 电子科技大学 | Generalized spatial modulation system sending and receiving end antenna selecting method based on power system capacity |
| CN110190880A (en) * | 2019-05-17 | 2019-08-30 | 长安大学 | A kind of incremental emitting antenna combination selection method of generalized space modulation |
-
2019
- 2019-08-16 CN CN201910756774.XA patent/CN110417451A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2466790A1 (en) * | 2010-12-15 | 2012-06-20 | Alcatel Lucent | Network managing system |
| CN103701513A (en) * | 2013-12-16 | 2014-04-02 | 西安交通大学 | Transmitting antenna selection method for generalized spatial modulation system under correlated channel |
| CN107425894A (en) * | 2017-06-16 | 2017-12-01 | 电子科技大学 | Generalized spatial modulation system sending and receiving end antenna selecting method based on channel norm |
| CN107425893A (en) * | 2017-06-16 | 2017-12-01 | 电子科技大学 | Generalized spatial modulation system sending and receiving end antenna selecting method based on power system capacity |
| CN110190880A (en) * | 2019-05-17 | 2019-08-30 | 长安大学 | A kind of incremental emitting antenna combination selection method of generalized space modulation |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112073091A (en) * | 2020-11-11 | 2020-12-11 | 华东交通大学 | Intelligent surface-assisted spatial modulation antenna selection method in high-speed rail scene |
| CN112073091B (en) * | 2020-11-11 | 2021-02-26 | 华东交通大学 | Intelligent surface-assisted spatial modulation antenna selection method in high-speed rail scene |
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Application publication date: 20191105 |