CN108173583A - Based on extensive MIMO single goals interference guidance method, mobile communication system and application - Google Patents
Based on extensive MIMO single goals interference guidance method, mobile communication system and application Download PDFInfo
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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
- H04B7/0413—MIMO systems
- H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
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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
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0857—Joint weighting using maximum ratio combining techniques, e.g. signal-to- interference ratio [SIR], received signal strenght indication [RSS]
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Abstract
The invention belongs to mobile communication technology fields, disclose one kind and interfere guidance method, mobile communication system and application based on extensive MIMO single goals, share channel status and data information between communication transmitter；Destinations traffic pair and interference communication are to separately designing precoding vector and the vector that accepts filter；Destinations traffic transmitter is directed to separately designs interference targeting signal per interference signal all the way, is sent with one destinations traffic receiver in the same direction of desired signal, all interference signals is adjusted on the same direction orthogonal with desired signal, realizes that single goal interference is oriented to；Communication control processor restores expected data.The present invention while realizing that interference is oriented to, saves the degree of freedom expense of interference management, communication control processor is made to improve the reception of desired signal, improve the spectrum efficiency of system by the way that all interference signals are directed in same direction.
Description
Technical field
The invention belongs to mobile communication technology fields more particularly to one kind to interfere guiding side based on extensive MIMO single goals
Method, mobile communication system and application.
Background technology
It is higher and higher to the capacity requirement of communication system with the fast development of mobile communication technology.Due to micro- in high frequency
Wave frequency section has extremely abundant frequency spectrum resource, and Modern Communication System develops to high-frequency microwave particularly millimeter wave frequency band.
Because of relatively high radio wave propagation loss on millimeter wave frequency band, the research initial stage of millimeter wave Radio Transmission Technology lays particular emphasis on mostly
Short haul connection scene, relevant technology can not directly apply to the mobile communication scene covered on a large scale.In view of millimeter wave
Frequency range upper ripple length is relatively short, and large-scale antenna array can be assembled to base station and user side simultaneously.And then by extensive
The high beam forming gain that aerial array is provided can compensate for propagation loss relatively high on millimeter wave frequency band.Therefore, it visits
The extensive MIMO of rope millimeter wave (Multipleinputmultipleoutput, multiple-input and multiple-output) Radio Transmission Technology is big
The application in mobile communication scene is covered, as the important research direction of researchers' concern.In extensive MIMO environment,
The number of links being operated in same channel excessively causes co-channel interference (Co-channel Interference, CCI) to increase
Add, limit the further promotion of network capabilities, therefore the importance of interference management techniques is increasingly prominent.In inter-user interference
In the case of, traditional AF panel thinking is at the signal orthogonalization by different user for intensity and the intensity of useful signal
Reason, be such as time-multiplexed (TimeDivision Multiplexing, TDM), frequency division multiplexing
(FrequencyDivisionMultiplexing, FDM) etc., using the thinking, user's communication is present in independently of each other with interference
Resource on, but such method fixes the distribution of resource, causes utilization rate low.Interference management mode in MIMO has：Force zero
Receive (Zero-forcing, ZF), interference neutralizes (InterferenceNeutralization, IN), interference alignment
(InterferenceAlignment, IA) etc. can make interference signal be inhibited or eliminate at the receiver being interfered.
Zero-forcing detector needs to project to desired signal on the direction orthogonal with interference, and desired signal can be caused while inhibiting and interfering
The loss of power, and need to consume the degree of freedom at receiver.Interference alignment can reduce the dimension of interference, but need to interfere
Signal processing at communication transmitter impacts, and interference is snapped in space the communication quality of interference communication pair
A direction there is also degree of freedom expense.Alignment neutralization in interference channel and degree of freedom research, by by IA and IN phases
With reference to, cascaded by two-stage two users' interference channel formed multi-hop interference network in design interference alignment in and scheme, realize
The concurrent transmission of multichannel data, but designing scheme IA is utilized thus there are inevitable degree of freedom consumption, while IN
Also making the program, there are a degree of power overheads.The scheme of the interference alignment of Millimeter-wave Wireless Communication System is in spatial domain
The advantage combination IA of the middle a large amount of bays possessed using millimeter-wave systems in itself eliminates interference, and this method will be a large amount of
Interference is snapped on the specific direction in space and occupied space array element is to obtain spatial multiplexing gain contradiction, therefore with stringent
Degree of freedom restrictive condition, and array directivity gain can be reduced.
In conclusion problem of the existing technology is：Degree of freedom is opened when the management more interfered and progress interference management
Selling excessive leads to the reduction of user's spectrum efficiency.
Invention content
In view of the problems of the existing technology, guiding side is interfered based on extensive MIMO single goals the present invention provides one kind
Method, mobile communication system and application.
The invention is realized in this way a kind of interfere guidance method based on extensive MIMO single goals, it is described based on big rule
Channel status and data information are shared between mould MIMO single goals interference guidance method communication transmitter；Destinations traffic pair and interference
Communication is to separately designing precoding vector and the vector that accepts filter；Destinations traffic transmitter is directed to be set respectively per interference signal all the way
Meter interference targeting signal, sends with one destinations traffic receiver in the same direction of desired signal, all interference signals is adjusted to and the phase
It hopes on the same direction of signal in orthogonal, realizes that single goal interference is oriented to；Communication control processor restores expected data.
Further, it is described to be included the following steps based on extensive MIMO single goals interference guidance method：
Step 1 realizes channel state information and data information sharing between each transmitter；
Step 2, destinations traffic pair and interference communication according to respective channel matrix to designing communication precoding vector with connecing
Receive filter vector；
Step 3, base station PBS calculate the precoding vector of each interference targeting signal respectively
All interference signals are adjusted in the same direction orthogonal with desired signal；
Step 4, base station PBS construction interference targeting signals st,STIS；
Step 5, base station PBS send all interference targeting signals to its user PUE.
Further, the step 1 specifically includes：
(1) user PUE estimates the channel state information between base station PBS and base station MBS and user PUE, obtain PBS and
Channel matrix H between MBS and PUE0And H10, the channel between the dry base station MBS of user MUE estimations and base station PBS and user MUE
Status information obtains the channel matrix H between MBS and PBS and MUE1And H01, two users will estimate obtain channel status letter
Breath feeds back to respective base station；
(2) base station PBS is to the user's PUE transmission datas of oneselfBase station MBS to the user MUE transmission datas of oneself to
Amount
The step 2 specifically includes：
(1) base station PBS is according to the channel matrix H between base station PBS and user PUE0Design its precoding vector that communicatesWith the signal processing based on SVD, to channel matrix H0Singular value decomposition is done, obtains H0=U0∑0(V0)H, wherein
It enables
(2) base station MBS is according to the channel matrix H between base station MBS and user MUE1Design its precoding vector that communicatesWith the signal processing based on SVD, to channel matrix H1Singular value decomposition is done, obtains H1=U1∑1
(V1)H, wherein
It enables
(3) user PUE is according to the channel matrix H between base station PBS and user PUE0Design its vector that accepts filter
With the signal processing based on SVD, to channel matrix H0Singular value decomposition is done, obtains H0=U0∑0(V0)H, wherein
It enables
(4) user MUE is according to the channel matrix H between base station MBS and user MUE1Design its vector that accepts filterWith the signal processing based on SVD, to channel matrix H1Singular value decomposition is done, obtains H1=U1∑1(V1)H,
Wherein It enables
Further, the step 3 specifically includes：
(1) destinations traffic transmitter PBS calculates the direction of desired signal
(2) destinations traffic transmitter PBS choose all the way interference signal i (k*) as initial interference, by initial interferencePoint
It solves as two components, one is with the component of phase with desired signalAnother is the component orthogonal with desired signal
I.e.
(3) destinations traffic transmitter PBS calculates projection components of the initial interference on desired signal directionAnd it allowsTargeting signalMeetWhereinFor about dsProjection matrix；
(4) destinations traffic transmitter PBS according toCalculate initial interference targeting signal precoding to
AmountMake targeting signal and projection components of the initial interference on desired signal direction
Deng big reversed；
(6) destinations traffic transmitter PBS calculates remaining K-1 roads interference in directionOn projection componentsRemaining interference is directed to initial interference and leads rearwardly directionOn, i.e.,
Meet conditionWithWherein k ∈ { 1,2 ..., K } { k*,For aboutProjection matrix；
(7) destinations traffic transmitter PBS passes through equationWithIt is calculatedCalculate the targeting signal of remaining K-1 roads interference signal
Precoding vector be respectively
The step 4 specifically includes：Base station PBS is according to the precoding vector that targeting signal is interfered per road
Calculate respective transmission power
WhereinSo as to construct targeting signal
WhereinRepresent power of the transmission power of kth road targeting signal after path loss, L10For
Base station MBS is to the path loss of user PUE, L0For base station PBS to the path loss of user PUE.
Further, the step 3 specifically includes：The step 5 specifically includes：All interference are oriented to by base station PBS
SignalIt is sent out with together with desired signal
User PUE is given, base station PBS is oriented to the interference that user PUE is subject to using targeting signal respectively, and user PUE passes through again
Filter vectorTo its dataRestored.
Guidance method is interfered based on extensive MIMO single goals described in another object of the present invention is to provide a kind of
Mobile communication system.
Guidance method is interfered based on extensive MIMO single goals described in another object of the present invention is to provide a kind of
In the communication pair of at least twin target and at least a pair of of interference communication is to the application in transmission multichannel data.
Guidance method is interfered based on extensive MIMO single goals described in another object of the present invention is to provide a kind of
The application in the precoding vector based on channel matrix singular value decomposition.
Guidance method is interfered based on extensive MIMO single goals described in another object of the present invention is to provide a kind of
In the application of vector design that accepts filter.
Guidance method is interfered based on extensive MIMO single goals described in another object of the present invention is to provide a kind of
In precoding vector and the application of vector design algorithm of accepting filter.
Advantages of the present invention and good effect are：Channel status and data information are shared between communication transmitter；Target is led to
Letter pair and interference communication are to separately designing precoding vector and the vector that accepts filter；Destinations traffic transmitter interferes all the way for every
Signal separately designs interference targeting signal, is sent with one destinations traffic receiver in the same direction of desired signal, by all interference signals
It is adjusted on the same direction orthogonal with desired signal, realizes that single goal interference is oriented to；Communication control processor restores expected data.
The present invention is by the way that all interference signals are directed in same direction, while realizing that interference is oriented to, saves interference pipe
The degree of freedom expense of reason, makes communication control processor improve the reception of desired signal, improves the spectrum efficiency of system.
Compared with prior art, for given receiving terminal degree of freedom, use the present invention can be in degree of freedom expense for 1
In the case of handle multichannel interference signal, so as to save degree of freedom expense.The present invention is by the corresponding transmitter of the receiver being disturbed
Construction and the transmission of interference targeting signal are carried out, being disturbed receiver needs to estimate its channel between interference communication transmitter
State does not increase other signal processing work, is easy to implement.
The present invention is applicable not only to only exist the feelings of twin target communication pair and a pair of of interference communication to transmitting multichannel data
Condition applies also for interference communication to being more than or equal to two pairs, and destinations traffic for a pair of but its transmission multichannel data or target to leading to
Believe to communication scenes when being more than or equal to two pairs.The present invention be applicable not only to the precoding based on channel matrix singular value decomposition to
It measures and accepts filter vector design, apply also for the algorithm for design of other precoding vectors and the vector that accepts filter.
Description of the drawings
Fig. 1 is provided in an embodiment of the present invention based on extensive MIMO single goals interference guiding side's flow chart.
Fig. 2 is system model schematic diagram provided in an embodiment of the present invention.
Fig. 3 be it is provided in an embodiment of the present inventionDesired signal and two-way interference letter all the way
Number parameter setting under, the spectrum efficiency of pico- user and the graph of relation of signal-to-noise ratio.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The application principle of the present invention is explained in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, provided in an embodiment of the present invention interfere guidance method including following based on extensive MIMO single goals
Step：
S101：Channel status and data information are shared between communication transmitter；
S102：Destinations traffic pair and interference communication are to separately designing precoding vector and the vector that accepts filter；
S103：Destinations traffic transmitter is directed to separately designs interference targeting signal per interference signal all the way, with desired signal
One destinations traffic receiver in the same direction is sent, and all interference signals is adjusted on the same direction orthogonal with desired signal,
Realize that single goal interference is oriented to；
S104：Communication control processor restores expected data.
The application principle of the present invention is further described below in conjunction with the accompanying drawings.
As shown in Fig. 2, the hybrid cellular net that the model that the present invention uses is made of single macro and single pico honeycombs
The overlay area of the downlink transfer of network, wherein pico and the covering area overlapping of macro.As shown in the figure, macro base station and pico- base
It stands and is represented with MBS and PBS, represent interference communication transmitter and destinations traffic transmitter, configuration respectivelyWithRoot emits day
Line.Macro user equipment and pico user equipment are represented with MUE and PUE, represent the reception corresponding to interference communication transmitter respectively
Receiver corresponding to machine and destinations traffic transmitter, configurationWithRoot reception antenna.Because mobile equipment by cost and
The serious limitation of hardware, it is assumed that the antenna number of base station is more than or equal to the antenna number of mobile subscriber, i.e.,And i=
0,1.The covering radius of Pico cell is d=300m in system, and the covering radius of macrocellular is D=3000m.Wherein, MBS and
PBS is respectively to MUE and PBS transmission datas vectorWithFor
Clearer description, it will be assumed that PBS sends a circuit-switched data to PUEInterference topology shown in figure has asymmetric
Feature, i.e., only MBS generate PUE interference, and PBS does not generate interference to MUE.
Single goal interference guidance method provided in an embodiment of the present invention based on extensive MIMO is as follows：
Step 1, channel state information and data information sharing are realized between each transmitter, realizes that step is：
Step 1a, base station PBS estimate respective channel state information and feed back to respective transmitting respectively with base station MBS
Machine：
User PUE estimates the channel state information between base station PBS and base station MBS and user PUE, obtain PBS and MBS with
Channel matrix H between PUE0And H10, the channel status between the dry base station MBS of user MUE estimations and base station PBS and user MUE
Information obtains the channel matrix H between MBS and PBS and MUE1And H01, two users will estimate that obtained channel state information is anti-
It feeds respective base station；
Step 1b, base station PBS are to the user's PUE transmission datas of oneselfBase station MBS sends number to the user MUE of oneself
According to vector
Step 2, destinations traffic pair and interference communication according to respective channel matrix to designing communication precoding vector with connecing
Filter vector is received, realizes that step is：
Step 2a, base station PBS is according to the channel matrix H between base station PBS and user PUE0Design its communicate precoding to
AmountWith the signal processing based on SVD, to channel matrix H0Singular value decomposition is done, obtains H0=U0∑0(V0)H, wherein
It enables
Step 2b, base station MBS is according to the channel matrix H between base station MBS and user MUE1Design its communicate precoding to
AmountWith the signal processing based on SVD, to channel matrix H1It does
Singular value decomposition obtains H1=U1∑1(V1)H, wherein
It enables
Step 2c, user PUE is according to the channel matrix H between base station PBS and user PUE0Design its vector that accepts filterWith the signal processing based on SVD, to channel matrix H0Singular value decomposition is done, obtains H0=U0∑0(V0)H, wherein
It enables
Step 2d, user MUE is according to the channel matrix H between base station MBS and user MUE1Design its vector that accepts filterWith the signal processing based on SVD, to channel matrix H1Singular value decomposition is done, obtains H1=U1∑1
(V1)H, wherein
It enables
Step 3, base station PBS calculates the precoding vector of each interference targeting signal respectively
All interference signals are adjusted in the same direction orthogonal with desired signal, realize that step is：
Step 3a, destinations traffic transmitter PBS calculate the direction of desired signal
Step 3b, destinations traffic transmitter PBS choose interference signal all the wayAs initial interference, by initial interferenceTwo components are decomposed into, one is with the component of phase with desired signalAnother is the component orthogonal with desired signalI.e.
Step 3c, destinations traffic transmitter PBS calculate projection components of the initial interference on desired signal directionAnd it allowsTargeting signalMeetWhereinFor about dsProjection matrix；
Step 3d, destinations traffic transmitter PBS according toCalculate prelisting for the targeting signal of initial interference
Code vectorMake the targeting signal and throwing of the initial interference on desired signal direction
Shadow component etc. is big reversely；
Step 3f, destinations traffic transmitter PBS calculate remaining K-1 roads interference in directionOn projection componentsRemaining interference is directed to initial interference and leads rearwardly directionOn, i.e.,
Meet conditionWithWherein k ∈ { 1,2 ..., K } { k*,For aboutProjection matrix；
Step 3g, destinations traffic transmitter PBS pass through equationWithIt is calculatedSo as to calculate leading for remaining K-1 roads interference signal
It is respectively to the precoding vector of signal
Step 4, PBS mechanisms in base station make interference targeting signal st,STIS, realize that step is：
Base station PBS interferes the precoding vector of targeting signal to calculate respective transmission power according to per roadWhereinSo as to construct targeting signalWhereinRepresent the transmission power warp of kth road targeting signal
Cross the power after path loss, L10For base station MBS to the path loss of user PUE, L0For base station PBS to the path of user PUE
Loss.
Step 5, base station PBS sends all interference targeting signals to its user PUE, realizes that step is：
Base station PBS is by all interference targeting signals With being sent to user PUE together with desired signal, base station PBS is using targeting signal to user
The interference that PUE is subject to is oriented to respectively, and user PUE passes through filter vector againTo its dataRestored, saved
In the case of degree of freedom expense, multiple interference are restrained effectively at user PUE.
The application effect of the present invention is explained in detail with reference to emulation experiment.
First, simulated conditions：
The simulated environment parameter setting of hybrid cellular network is listed in table 1.For clearer statement, it is assumed that from macro base
Stand to mobile terminal path loss model be L10=128.1+37.6log10[η10/103] dB, it is moved from femto base station to pico-
The path loss model of dynamic terminal is L0=38+30log10[η0] dB, wherein η10Represent interference communication transmitter and destinations traffic
The distance between receiver, η0Represent the distance between destinations traffic transmitter and destinations traffic receiver.Define signal-to-noise ratio Φ
=10lg (γ) dB, wherein Represent that the desired signal transmission power that femto base station is sent is passed through
The power of pico- user is reached after path loss.DefinitionRepresent the interference that macro base station is sent
Signal transmission power reaches the power of pico- user after path loss.In practice, the deployed position of femto base station with it is macro
Base station will not be close, and picocell, using open access module, user can be according to the signal received from multiple access points
Strong and weak selection signal optimal quality access point, in simulations set ξ ∈ [0.1,100].
1 hybrid cellular network simulated environment parameter setting of table
2nd, emulation content：
Simulation parameter ξ=0.5 is set,Femto base station it is expected all the way to pico- user
Data transmission, pico- user is by the two-way interference signal from macro base station.It is true with the method for the present invention under above-mentioned simulated conditions
The spectrum efficiency (Spectrum Efficiency, SE) of fixed pico- user and the relation curve of signal-to-noise ratio Φ, as a result such as Fig. 3 institutes
Show.
It is interfered under guidance mode using single goal, the expression formula of the spectrum efficiency SE of pico- user is：
Represent power of the targeting signal of femto base station transmitting after path loss,Represent additive white Gaussian noise
Power.
Curve in Fig. 3 is that the spectrum efficiency of pico- user PUE when handling more interference using STIS changes with signal-to-noise ratio Φ
Relation curve.The considerations of by the present invention to being used to interfere the degree of freedom expense being oriented to, can substantially reduce receiving terminal oneself
By degree expense, while the spectrum efficiency of pico- user can be improved.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. one kind interferes guidance method based on extensive MIMO single goals, which is characterized in that described to be based on extensive MIMO monoculars
Channel status and data information are shared between mark interference guidance method communication transmitter；Destinations traffic pair and interference communication are to respectively
Design precoding vector and the vector that accepts filter；Destinations traffic transmitter, which is directed to, separately designs interference guiding per interference signal all the way
Signal sends with one destinations traffic receiver in the same direction of desired signal, all interference signals is adjusted to orthogonal with desired signal
Same direction on, realize single goal interference be oriented to；Communication control processor restores expected data.
2. guidance method is interfered based on extensive MIMO single goals as described in claim 1, which is characterized in that described based on big
Scale MIMO single goals interference guidance method includes the following steps：
Step 1 realizes channel state information and data information sharing between each transmitter；
Step 2, destinations traffic pair and interference communication are filtered to designing communication precoding vector according to respective channel matrix with receiving
Wave vector；
Step 3, base station PBS calculate the precoding vector of each interference targeting signal respectively(k=1,2,3 ..., K), will
All interference signals are adjusted in the same direction orthogonal with desired signal；
Step 4, base station PBS construction interference targeting signals st,STIS；
Step 5, base station PBS send all interference targeting signals to its user PUE.
3. guidance method is interfered based on extensive MIMO single goals as claimed in claim 2, which is characterized in that the step 1
It specifically includes：
(1) user PUE estimates the channel state information between base station PBS and base station MBS and user PUE, obtain PBS and MBS with
Channel matrix H between PUE0And H10, the channel status between the dry base station MBS of user MUE estimations and base station PBS and user MUE
Information obtains the channel matrix H between MBS and PBS and MUE1And H01, two users will estimate that obtained channel state information is anti-
It feeds respective base station；
(2) base station PBS is to the user's PUE transmission datas of oneselfBase station MBS is vectorial to the user MUE transmission datas of oneself
The step 2 specifically includes：
(1) base station PBS is according to the channel matrix H between base station PBS and user PUE0Design its precoding vector that communicatesUse base
In the signal processing of SVD, to channel matrix H0Singular value decomposition is done, obtains H0=U0Σ0(V0)H, wherein
It enables
(2) base station MBS is according to the channel matrix H between base station MBS and user MUE1Design its precoding vector that communicates(k=
1,2,3 ..., K), with the signal processing based on SVD, to channel matrix H1Singular value decomposition is done, obtains H1=U1Σ1(V1)H,
In
It enables
(3) user PUE is according to the channel matrix H between base station PBS and user PUE0Design its vector that accepts filterUse base
In the signal processing of SVD, to channel matrix H0Singular value decomposition is done, obtains H0=U0∑0(V0)H, wherein
It enables
(4) user MUE is according to the channel matrix H between base station MBS and user MUE1Design its vector that accepts filter(k=1,
2,3 ..., K), with the signal processing based on SVD, to channel matrix H1Singular value decomposition is done, obtains H1=U1∑1(V1)H, wherein It enables
4. guidance method is interfered based on extensive MIMO single goals as claimed in claim 2, which is characterized in that the step 3
It specifically includes：
(1) destinations traffic transmitter PBS calculates the direction of desired signal
(2) destinations traffic transmitter PBS chooses interference signal all the wayAs initial interference, by initial interferenceIt is decomposed into two
A component, one is the component in the same direction with desired signalAnother is the component orthogonal with desired signalI.e.
(3) destinations traffic transmitter PBS calculates projection components of the initial interference on desired signal directionAnd it allowsTargeting signalMeetWherein For about dsProjection matrix；
(4) destinations traffic transmitter PBS according toCalculate the precoding vector of the targeting signal of initial interferenceMake targeting signal and projection components of the initial interference on desired signal direction etc.
It is big reversed；
(5) destinations traffic transmitter PBS calculates the direction after initial interference signal guide
(6) destinations traffic transmitter PBS calculates remaining K-1 roads interference in directionOn projection componentsRemaining interference is directed to initial interference and leads rearwardly directionOn, i.e.,
Meet conditionWithWherein k ∈ { 1,2 ..., K } { k*,For aboutProjection matrix；
(7) destinations traffic transmitter PBS passes through equationWithIt is calculatedCalculate the targeting signal of remaining K-1 roads interference signal
Precoding vector be respectively
The step 4 specifically includes：Base station PBS is according to the precoding vector that targeting signal is interfered per road
Calculate respective transmission power
WhereinSo as to construct targeting signal
WhereinRepresent power of the transmission power of kth road targeting signal after path loss, L10For
Base station MBS is to the path loss of user PUE, L0For base station PBS to the path loss of user PUE.
5. guidance method is interfered based on extensive MIMO single goals as claimed in claim 2, which is characterized in that
The step 3 specifically includes：The step 5 specifically includes：Base station PBS is by all interference targeting signalsIt is sent to together with desired signal
User PUE, base station PBS are oriented to the interference that user PUE is subject to using targeting signal respectively, and user PUE passes through filtering again
VectorTo its dataRestored.
6. a kind of movement using based on extensive MIMO single goals interference guidance method described in 5 any one of Claims 1 to 5
Communication system.
7. a kind of interfere guidance method at least using described in 5 any one of Claims 1 to 5 based on extensive MIMO single goals
Twin target communication pair and at least a pair of of interference communication are to the application in transmission multichannel data.
8. it is a kind of using described in 5 any one of Claims 1 to 5 based on extensive MIMO single goals interference guidance method in base
Application in the precoding vector of channel matrix singular value decomposition.
9. a kind of utilize connecing based on extensive MIMO single goals interference guidance method described in 5 any one of Claims 1 to 5
Receive the application of filter vector design.
10. it is a kind of using described in 5 any one of Claims 1 to 5 based on extensive MIMO single goals interference guidance method pre-
The application of coding vector and the vector design algorithm that accepts filter.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109450506A (en) * | 2018-11-16 | 2019-03-08 | 政务和公益机构域名注册管理中心 | A kind of more interference cooperation interference alignment schemes based on the adjustment of two-way interference signal |
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