CN103220026B - Code book feedback method and signal receiving device, signaling method and device - Google Patents
Code book feedback method and signal receiving device, signaling method and device Download PDFInfo
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- CN103220026B CN103220026B CN201210017691.7A CN201210017691A CN103220026B CN 103220026 B CN103220026 B CN 103220026B CN 201210017691 A CN201210017691 A CN 201210017691A CN 103220026 B CN103220026 B CN 103220026B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03891—Spatial equalizers
- H04L25/03949—Spatial equalizers equalizer selection or adaptation based on feedback
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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
- H04B7/0417—Feedback systems
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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
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
- H04B7/0636—Feedback format
- H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
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Abstract
The invention discloses a kind of code book feedback method and signal receiving device, signaling method and device, this signaling method includes step: when the signalling needs in 3D mimo system are to receiving side signal transmission signal, several angle of declinations are selected from the first codebook set pre-set, and according to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted；From the second codebook set pre-set, select several matrixes, and according to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted；By adjust equivalence angle of declination after transmitting antenna, by weighting process after signal stream be sent to described receiving side signal.Technical solution of the present invention proposes the specific implementation transmitting signal between signalling and the receiving side signal in a kind of 3D mimo system.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of code book feedback method and signal receiving device, signaling method and device.
Background technology
Multiple-input and multiple-output (MIMO, Multiple-Input-Multiple-Output) technology is one of key technology of current main flow wireless communication system.The space division characteristic of mimo system can make system support multiple data streams, improves the handling capacity of system, the diversity performance of mimo system, it is possible to improves the reliability of system transfers, improves Consumer's Experience.
Currently employed MIMO technology is all belonging to two dimension (2DDimensions) MIMO technology, as shown in Figure 1, when signalling adopts M transmitting antenna, precoding/beam shaping technology is by being weighted processing to the signal that M transmitting antenna is corresponding, it is made to mate present channel, thus improve the performance of system.
Along with the progress of hardware technology, MIMO technology will become a reality in future from 2D to three-dimensional (3D, 3Dimensions) extension.In 3DMIMO technology, each antenna is made up of K junior unit (being properly termed as antenna element), as shown in Figure 2,3DMIMO system can pass through Base-Band Processing directly control each antenna element, and now the signal that M × K antenna element is corresponding can be weighted process by precoding/beam shaping technology.Compare with 2DMIMO technology, the process by baseband signal of the 3DMIMO technology, can the angle of declination of changing section bandwidth or whole antenna dynamically, can improve active user receives the energy of signal on the one hand, on the other hand can interference between effectively suppression system, such that it is able to improve the overall performance of wireless network.
But, prior art is but without the specific implementation transmitting signal between the signalling and the receiving side signal that propose in 3DMIMO system.
Summary of the invention
The embodiment of the present invention provides a kind of code book feedback method and signal receiving device, signaling method and device, in order to propose to transmit between signalling and the receiving side signal in a kind of 3DMIMO system the specific implementation of signal.
Embodiment of the present invention technical scheme is as follows:
A kind of code book feedback method in three-dimensional multiple-input and multiple-output 3DMIMO system, the method comprising the steps of: the receiving side signal in 3DMIMO system selects several angle of declinations from the first codebook set pre-set, and selects several matrixes from the second codebook set pre-set；The matrix identification of the matrix being identified at the inclination angle of the angle of declination selected and selecting is sent to signalling.
A kind of signal receiving device in three-dimensional multiple-input and multiple-output 3DMIMO system, including: angle of declination selects unit, for selecting several angle of declinations from the first codebook set pre-set；Matrix selects unit, for selecting several matrixes from the second codebook set pre-set；Transmitting element, the matrix identification of the matrix that the inclination angle mark and matrix for angle of declination selects angle of declination that Unit selection goes out selects Unit selection to go out is sent to sender unit.
A kind of signaling method in three-dimensional multiple-input and multiple-output 3DMIMO system, the method comprising the steps of: when the signalling in 3DMIMO system needs to receiving side signal transmission signal, several angle of declinations are selected from the first codebook set pre-set, and according to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted；From the second codebook set pre-set, select several matrixes, and according to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted；By adjust equivalence angle of declination after transmitting antenna, by weighting process after signal stream be sent to described receiving side signal.
A kind of sender unit in three-dimensional multiple-input and multiple-output 3DMIMO system, including: angle of declination selects unit, for when described sender unit needs to send signal to signal receiving device, selecting several angle of declinations from the first codebook set pre-set；Angle of declination adjustment unit, for the angle of declination gone out according to angle of declination selection Unit selection, is adjusted the equivalent angle of declination of transmitting antenna；Matrix selects unit, for selecting several matrixes from the second codebook set pre-set；Weighting processing unit, for the matrix gone out according to matrix selection Unit selection, processes needing the signal stream being sent to signal receiving device to be weighted；Signal transmitting unit, for adjusting the transmitting antenna after equivalence angle of declination by angle of declination adjustment unit, is weighted weighting processing unit the signal stream after processing and is sent to described signal receiving device.
In embodiment of the present invention technical scheme, first codebook set and the second codebook set are set for 3DMIMO system in advance, first codebook set comprises several default angle of declinations, second codebook set comprises several default matrixes, when signalling in 3DMIMO system needs to receiving side signal transmission signal, several angle of declinations are selected from the first codebook set, and according to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted, several matrixes are selected from the second codebook set, and according to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted, then pass through the transmitting antenna after adjusting equivalence angle of declination, signal stream after weighting being processed is sent to described receiving side signal.Therefore, the embodiment of the present invention proposes the specific implementation transmitting signal between signalling and the receiving side signal in a kind of 3DMIMO system, the expense of code book feedback can be effectively reduced, improve systematic function, reduce the overall complexity that system realizes.
Accompanying drawing explanation
Fig. 1 is in prior art, 2DMIMO system sending antenna structure schematic diagram；
Fig. 2 is in prior art, 3DMIMO system sending antenna structure schematic diagram；
Fig. 3 is in the embodiment of the present invention one, the code book feedback method schematic flow sheet in 3DMIMO system；
Fig. 4 is in the embodiment of the present invention two, the signal receiving device structural representation in 3DMIMO system；
Fig. 5 is in the embodiment of the present invention three, the signaling method schematic flow sheet in 3DMIMO system；
Fig. 6 is in the embodiment of the present invention four, the sender unit structural representation in 3DMIMO system.
Detailed description of the invention
Below in conjunction with each accompanying drawing, the main of embodiment of the present invention technical scheme is realized principle, detailed description of the invention and the beneficial effect that should be able to reach is set forth in.
Embodiment one
As it is shown on figure 3, be the code book feedback method flow chart in the 3DMIMO system of the embodiment of the present invention one proposition, its concrete processing procedure is as follows:
Step 31, the receiving side signal in 3DMIMO system selects several angle of declinations from the first codebook set pre-set, and selects several matrixes from the second codebook set pre-set.
Wherein the first codebook set comprises several default angle of declinations, comprises several default matrixes in the second codebook set.
Signalling in 3DMIMO system can be base station, then corresponding receiving side signal is subscriber equipment (UE, UserEquipment), and signalling can also be UE, then corresponding receiving side signal is base station.
Receiving side signal can be, but not limited to select angle of declination and matrix according to Criterion of Selecting set in advance, Criterion of Selecting can be that capacity is maximum, it is minimum to disturb or Signal to Interference plus Noise Ratio (SINR, SignaltoInterferenceplusNoiseRatio) is the highest.
If the signalling in 3DMIMO system adopts M transmitting antenna, each transmitting antenna is made up of K antenna element, its correspondence be numbered (x, y) wherein x corresponding to transmitting antenna belonging to antenna element numbering (x=1 ..., M), y corresponds to antenna element numbering (y=1 on transmitting antenna, ..., K), as shown in Figure 2, antenna element set on same level direction (same to a line) is (1, y), (2, y), ..., (M, y), y corresponding row.
In the embodiment of the present invention one, pre-set two different codebook sets for 3DMIMO system, the first codebook set C1 and the second codebook set C2, concrete:
1, the first codebook set C1 comprises T element, an angle of declination of the transmitting antenna of each element correspondence signalling, say, that comprise several angle of declinations in the first codebook set C1；
2, the second codebook set C1 comprises G matrix subclass, G≤M, each matrix subclass is designated as Ri (i=1, ..., G), each matrix subclass comprises several matrixes, for the signal corresponding to M the antenna element of same level direction (same to a line) is weighted.Wherein, each matrix subclass is corresponding with the signal number in the signal stream that receiving side signal receives respectively, such as, matrix subclass R1 is corresponding with signal number 1 (namely comprising 1 signal in signal stream), matrix subclass R2 is corresponding with signal number 2 (namely comprising 2 signals in signal stream), the rest may be inferred, and it is corresponding that matrix subclass Ri and signal number i (namely comprises i signal in signal stream).
When receiving side signal selects several matrixes from the second codebook set C2, first the signal number in the signal stream received as required, in the second codebook set C2 matrix subclass comprised, choose and need matrix subclass corresponding to signal number in the signal stream that receives, and selecting several matrixes from the matrix subclass selected.
The number M of the transmitting antenna that line number is signalling of each matrix in each matrix subclass, columns is the signal number that this matrix subclass is corresponding, such as, in matrix subclass R1, the size of each matrix is M × 1, in matrix subclass R2, the size of each matrix is M × 2, the rest may be inferred, and in matrix subclass Ri, the size of each matrix is M × i.
Each angle of declination in first codebook set C1 has the numbering of correspondence, and namely corresponding inclination angle mark, each matrix in the second codebook set C2 also has the numbering of correspondence, namely corresponding matrix identification.
In the embodiment of the present invention one, when receiving side signal selects several angle of declinations from the first codebook set C1, it is possible to have following two ways:
1, receiving side signal selects an angle of declination from the first codebook set C1 pre-set；
2, receiving side signal selects M angle of declination from the first codebook set C1 pre-set.
When receiving side signal selects several matrixes from the second codebook set C2, it is possible to have following two ways:
1, receiving side signal selects a matrix from the second codebook set C2 pre-set；
2, receiving side signal selects K matrix from the second codebook set C2 pre-set.
Therefore, in the embodiment of the present invention one, the mode that receiving side signal feeds back code book to signalling has following four kinds:
The first feedback system: receiving side signal selects an angle of declination from the first codebook set C1 pre-set, selects a matrix from the second codebook set C2 pre-set；
The second feedback system: receiving side signal selects M angle of declination from the first codebook set C1 pre-set, selects a matrix from the second codebook set C2 pre-set；
The third feedback system: receiving side signal selects an angle of declination from the first codebook set C1 pre-set, selects K matrix from the second codebook set C2 pre-set；
4th kind of feedback system: receiving side signal selects M angle of declination from the first codebook set C1 pre-set, selects K matrix from the second codebook set C2 pre-set.
Step 32, the matrix identification of the matrix being identified at the inclination angle of the angle of declination selected and selecting is sent to signalling.
Wherein, receiving side signal can be, but not limited to periodically carry out code book feedback, the feedback cycle that first codebook set C1 and the second codebook set C2 is corresponding identical, such as feedback inclination angle identifies and matrix identification simultaneously, first codebook set C1 and the second codebook set C2 can also corresponding different feedback cycle, such as, the feedback cycle of the first codebook set C1 can be the integral multiple of the feedback cycle of the second codebook set C2.
If receiving side signal have selected an angle of declination, then the inclination angle mark of this angle of declination selected is sent to signalling, if have selected M angle of declination, then inclination angle mark corresponding respectively for each angle of declination selected is sent to signalling, in like manner, if receiving side signal have selected a matrix, then the matrix identification of this matrix selected is sent to signalling, if have selected K matrix, then the matrix identification that each matrix selected is corresponding respectively is sent to signalling.
If the first codebook set C1 and the second codebook set C2 remains unchanged in whole 3DMIMO system, then receiving side signal and signalling can prestore the first codebook set C1 and the second codebook set C2, follow-up can directly use the first codebook set C1 prestored and the second codebook set C2 to carry out code book feedback；Additionally, receiving side signal and signalling timing can also obtain the first codebook set C1 and the second codebook set C2 from the network equipment.
In addition, in the embodiment of the present invention one, receiving side signal can carry out code book feedback based on full bandwidth, code book feedback can also be carried out based on subband, pre-set each subband carrying out code book feedback, when receiving side signal selects angle of declination and matrix, for default each subband, several angle of declinations are selected respectively from the first codebook set pre-set, and select several matrixes from the second codebook set pre-set, then for default each subband, the matrix identification of the matrix being identified at the inclination angle of the angle of declination selected for this subband respectively and selecting is sent to signalling.
Embodiment two
With the embodiment of the present invention one propose 3DMIMO system in code book feedback method corresponding, the embodiment of the present invention two proposes the signal receiving device in a kind of 3DMIMO system, its structure as shown in Figure 4, including:
Angle of declination selects unit 41, for selecting several angle of declinations from the first codebook set pre-set；
Matrix selects unit 42, for selecting several matrixes from the second codebook set pre-set；
Transmitting element 43, the matrix identification of the matrix that the inclination angle mark and matrix for angle of declination selects angle of declination that Unit selection goes out selects Unit selection to go out is sent to sender unit.
Preferably, second codebook set comprises several matrix subclass, each matrix subclass comprises several matrixes, each matrix subclass is corresponding with the signal number in the signal stream that receiving side signal receives respectively, in matrix subclass, the line number of each matrix is the number of the transmitting antenna of sender unit, and columns is the signal number in the signal stream that receiving side signal receives；
Matrix selects unit 42 to specifically include:
Matrix subclass chooses subelement, for needing the signal number in the signal stream received according to described signal receiving device, in several matrix subclass that the second codebook set comprises, choose the matrix subclass corresponding with the signal number in the signal stream needing reception；
Matrix selects subelement, selects several matrixes for choosing the matrix subclass that subelement selects from matrix subclass.
It is preferred that angle of declination selects unit 41, specifically for pin each subband to received signal, from the first codebook set pre-set, select several angle of declinations respectively；
Matrix selects unit 42, specifically for for default each subband, selecting several matrixes respectively from the second codebook set pre-set；
Transmitting element 43, specifically for for default each subband, selects the matrix identification of the matrix that the inclination angle mark of the angle of declination that unit 41 selects for this subband and matrix select unit 42 to select for this subband to be sent to signalling respectively by angle of declination.
It is preferred that angle of declination selects unit 41, specifically for selecting an angle of declination from the first codebook set pre-set.
It is preferred that angle of declination selects unit 41, specifically for selecting M angle of declination from the first codebook set pre-set, M is the number of the transmitting antenna of sender unit.
It is preferred that matrix selects unit 42, specifically for selecting a matrix from the second codebook set pre-set.
It is preferred that matrix selects unit 42, the number of the antenna element that each transmitting antenna specifically for selecting K matrix, K to be sender unit from the second codebook set pre-set comprises.
Embodiment three
As it is shown in figure 5, be the signaling method flow chart in a kind of 3DMIMO system of the embodiment of the present invention three proposition, its concrete handling process is as follows:
Step 51, when the signalling in 3DMIMO system needs to receiving side signal transmission signal, selects several angle of declinations from the first codebook set pre-set, and according to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted；
Wherein, the signalling in 3DMIMO system can be base station, then corresponding receiving side signal is UE, and signalling can also be UE, then corresponding receiving side signal is base station.
The first codebook set mentioned in the embodiment of the present invention three is consistent with the first codebook set C1 in the embodiment of the present invention one, and the second codebook set mentioned in the embodiment of the present invention three is consistent with the second codebook set C2 in the embodiment of the present invention one, repeats no more here.
In the embodiment of the present invention three, signalling in 3DMIMO system is when needs send signal to receiving side signal, directly can select several angle of declinations in the first default codebook set C1, such as select an angle of declination or select M angle of declination, wherein, signalling can take the mode that timesharing is chosen to be that receiving side signal selects angle of declination, such as, in the D0 moment, select the 1st angle of declination in the first codebook set, in the D1 moment, select the 2nd angle of declination in the first codebook set, the rest may be inferred, in the Ds moment, select (s-1) the individual angle of declination in the first codebook set.
In addition the embodiment of the present invention three also proposes, signalling can also first receive several inclination angles mark of receiving side signal feedback, then when needs send signal to receiving side signal, according to several inclination angles mark received, from the first codebook set pre-set, select corresponding number angle of declination.The mode that receiving side signal in 3DMIMO system feeds back inclination angle mark to signalling is consistent with the mode that the embodiment of the present invention one is mentioned, and repeats no more here.
In the embodiment of the present invention three, signalling can directly according to the inclination angle mark received, first codebook set C1 selects the angle of declination of the inclination angle mark correspondence received, if receiving side signal has fed back an inclination angle mark, then signalling selects the angle of declination of this inclination angle mark correspondence received in the first codebook set C1, if receiving side signal has fed back M inclination angle mark, then signalling is for each inclination angle mark received, and selects the angle of declination that this inclination angle mark is corresponding respectively in the first codebook set C1；In addition, signalling is when selecting angle of declination, inclination angle mark not only according to receiving side signal feedback, it is also possible to comprehensively other factors (the inclination angle mark of such as current system conditions or other receiving side signals feedback) to select angle of declination from the first codebook set C1.
In the embodiment of the present invention three, when signalling selects several angle of declinations from the first codebook set C1, it is possible to have following two ways:
1, signalling selects an angle of declination from the first codebook set C1 pre-set, now signalling is according to the angle of declination selected, when the equivalent angle of declination of transmitting antenna is adjusted, for each transmitting antenna, respectively the equivalent angle of declination of this transmitting antenna is adjusted to the angle of declination selected.
Such as, the angle of declination that signalling is selected is angle of declination α, then the equivalent angle of declination of all transmitting antennas is all adjusted to angle of declination α by signalling.
2, receiving side signal selects M angle of declination from the first codebook set C1 pre-set, now signalling is according to the angle of declination selected, when the equivalent angle of declination of transmitting antenna is adjusted, for each transmitting antenna, respectively in each angle of declination selected, determine the angle of declination that this transmitting antenna is corresponding, and the equivalent angle of declination of this transmitting antenna is adjusted to this angle of declination determined.
Such as, the angle of declination that signalling is selected is angle of declination α1..., αM, then the equivalent angle of declination of transmitting antenna 1 is adjusted to α by signalling1, the equivalent angle of declination of transmitting antenna 2 is adjusted to α2, the rest may be inferred, and the equivalent angle of declination of transmitting antenna M is adjusted to αM。
In the embodiment of the present invention three, when signalling receives the inclination angle mark of receiving side signal feedback, several inclination angles mark that receiving side signal feeds back respectively can be received for default each subband, now signalling is for needing to send each Physical Resource Block (PRB of signal to receiving side signal, PhysicalResourceBlock), determine several inclination angles mark of receiving side signal subband feedback belonging to this PRB respectively, and according to the inclination angle mark determined, corresponding number angle of declination is selected from the first codebook set C1 pre-set, when the equivalent angle of declination of transmitting antenna is adjusted, signalling is for needing to send each PRB of signal to receiving side signal, respectively according to for this PRB angle of declination selected, the equivalent angle of declination of this PRB of each transmitting antenna is adjusted.
Step 52, selects several matrixes from the second codebook set pre-set, and according to the matrix selected, processes needing the signal stream being sent to receiving side signal to be weighted；
In the embodiment of the present invention three, signalling in 3DMIMO system is when needs send signal to receiving side signal, directly can select several matrixes in the second default codebook set C2, such as select a matrix or select K matrix, wherein, signalling can take the mode that timesharing is chosen to be receiving side signal selection matrix, such as, in the D0 moment, if sending the data stream that signal number is J, from the j-th matrix subclass of the second codebook set, then select the 1st matrix, in the D1 moment, if sending the data stream that signal number is J, from the j-th matrix subclass of the second codebook set, then select the 2nd matrix, the rest may be inferred, in the Ds moment, if sending the data stream that signal number is J, from the j-th matrix subclass of the second codebook set, then select (s-1) individual matrix.
In addition the embodiment of the present invention three also proposes, signalling can also first receive several matrix identification of receiving side signal feedback, then when needs send signal to receiving side signal, according to several matrix identification received, from the second codebook set pre-set, select corresponding number matrix.The mode that receiving side signal in 3DMIMO system identifies to signalling feedback matrix is consistent with the mode that the embodiment of the present invention one is mentioned, and repeats no more here.
In the embodiment of the present invention three, signalling can directly according to the matrix identification received, second codebook set C2 selects the matrix that the matrix identification that receives is corresponding, if receiving side signal has fed back a matrix identification, then signalling selects the matrix that this matrix identification of receiving is corresponding in the second codebook set C2, if receiving side signal has fed back K matrix identification, then signalling is for each matrix identification received, and selects, in the second codebook set C2, the matrix that this matrix identification is corresponding respectively；In addition, signalling is when selection matrix, matrix identification not only according to receiving side signal feedback, it is also possible to comprehensively other factors (matrix identification of such as current system conditions or other receiving side signals feedback) carry out selection matrix from the second codebook set C2.
In the embodiment of the present invention three, when signalling selects several matrixes from the second codebook set C2, it is possible to have following two ways:
1, signalling selects a matrix from the second codebook set C2 pre-set, now signalling is according to the matrix selected, when processing needing the signal stream being sent to receiving side signal to be weighted, first calculate the associate matrix of the matrix selected, the matrix wherein selected be sized to M × J, M is the number of the transmitting antenna of signalling, J needs to be sent to the signal number in the signal stream of receiving side signal, signalling is by the associate matrix calculated and needs the signal stream being sent to receiving side signal to carry out multiplication, M signal can be obtained.
Such as, the matrix that signalling is selected is matrix V, it is necessary to the signal stream being sent to receiving side signal is S=[S1..., SJ], the associate matrix of matrix V is VH, by associate matrix VHSV can be obtained after carrying out multiplication with SH, it is possible to obtain M signal.
2, receiving side signal selects K matrix from the second codebook set C2 pre-set, now signalling is according to the matrix selected, when processing needing the signal stream being sent to receiving side signal to be weighted, for each matrix selected, calculate the associate matrix of this matrix respectively, then this associate matrix calculated and the signal stream needing to be sent to receiving side signal are carried out multiplication, obtain M signal, K × M signal can be obtained altogether.
Such as, the matrix that signalling is selected is matrix V1..., VK, it is necessary to the signal stream being sent to receiving side signal is S=[S1..., SJ], matrix Vi(i=1 ..., K) associate matrix be Vi H, by associate matrix Vi HSV can be obtained after carrying out multiplication with Si H, it is possible to obtain M signal, obtain K × M signal altogether.
In the embodiment of the present invention three, when signalling receives the matrix identification of receiving side signal feedback, several matrix identification that receiving side signal feeds back respectively can be received for default each subband, now signalling is for needing to send each PRB of signal to receiving side signal, determine receiving side signal several matrix identification of subband feedback belonging to this PRB respectively, and according to the matrix identification determined, corresponding number matrix is selected from the second codebook set C2 pre-set, when being weighted signal stream processing, signalling is for needing to send each PRB of signal to receiving side signal, respectively according to for this PRB matrix selected, process this PRB needing the signal stream being sent to receiving side signal be weighted.
Step 53, by adjust equivalence angle of declination after transmitting antenna, by weighting process after signal stream be sent to described receiving side signal.
If signalling selects a matrix from the second codebook set C2 pre-set, then signalling is to needing the signal stream being sent to receiving side signal can obtain M signal after being weighted process, now signalling is by the transmitting antenna after adjustment equivalence angle of declination, when signal stream after weighting being processed is sent to described receiving side signal, the each signal obtained after first processing for weighting, determine this signal transmitting antenna corresponding, after adjustment equivalence angle of declination respectively, and the transmitting antenna being determined by out sends the signal to described receiving side signal.
Such as, the signal that signalling obtains after signal stream is weighted process is W=[W1..., WM], signalling sends signal W by the transmitting antenna 1 after adjusting equivalence angle of declination1, send signal W by the transmitting antenna 2 after adjusting equivalence angle of declination2, the rest may be inferred, sends signal W by the transmitting antenna M after adjusting equivalence angle of declinationM。
If signalling selects K matrix from the second codebook set C2 pre-set, then signalling is to needing the signal stream being sent to receiving side signal can obtain K × M signal after being weighted process, now signalling is by the transmitting antenna after adjustment equivalence angle of declination, when signal stream after weighting being processed is sent to described receiving side signal, the each signal obtained after first processing for weighting, determine that this signal is corresponding respectively, adjust the transmitting antenna after equivalence angle of declination, and in the antenna element that the transmitting antenna determined comprises, determine the antenna element that this signal is corresponding, and the antenna element being determined by out sends the signal to described receiving side signal.
Such as, the signal that signalling obtains after signal stream is weighted process is:
Signalling sends signal W by the antenna element 1 in the transmitting antenna 1 after adjusting equivalence angle of declination11, send signal W by the antenna element 2 in transmitting antenna 112, the rest may be inferred, sends signal W by the antenna element K in the transmitting antenna M after adjusting equivalence angle of declinationKM。
Therefore, in the embodiment of the present invention three, the mode that signalling sends signal to receiving side signal has following four kinds:
The first sends mode: signalling selects an angle of declination α from the first codebook set C1 pre-set, the equivalent angle of declination of all transmitting antennas is all adjusted to angle of declination α, a matrix V is selected, it is necessary to the signal stream being sent to receiving side signal is S=[S from the second codebook set C2 pre-set1..., SJ], calculate the associate matrix V of matrix VH, by associate matrix VHCarry out multiplication with S and can obtain SVH, it is possible to obtain M signal W=[W1..., WM], signalling sends signal W by the transmitting antenna 1 after adjusting equivalence angle of declination1, send signal W by the transmitting antenna 2 after adjusting equivalence angle of declination2, the rest may be inferred, sends signal W by the transmitting antenna M after adjusting equivalence angle of declinationM。
The second sends mode: signalling selects angle of declination α from the first codebook set C1 pre-set1..., αM, the equivalent angle of declination of transmitting antenna 1 is adjusted to α1, the equivalent angle of declination of transmitting antenna 2 is adjusted to α2, the rest may be inferred, and the equivalent angle of declination of transmitting antenna M is adjusted to αM, from the second codebook set C2 pre-set, select a matrix V, it is necessary to the signal stream being sent to receiving side signal is S=[S1..., SJ], calculate the associate matrix V of matrix VH, by associate matrix VHCarry out multiplication with S and can obtain SVH, it is possible to obtain M signal W=[W1..., WM], signalling sends signal W by the transmitting antenna 1 after adjusting equivalence angle of declination1, send signal W by the transmitting antenna 2 after adjusting equivalence angle of declination2, the rest may be inferred, sends signal W by the transmitting antenna M after adjusting equivalence angle of declinationM。
The third sends mode: signalling selects an angle of declination α from the first codebook set C1 pre-set, and the equivalent angle of declination of all transmitting antennas is all adjusted to angle of declination α, selects K matrix V from the second codebook set C2 pre-set1..., VK, it is necessary to the signal stream being sent to receiving side signal is S=[S1..., SJ], calculate matrix Vi(i=1 ..., K) associate matrix Vi H, by associate matrix Vi HSV can be obtained after carrying out multiplication with Si H, it is possible to obtain M signal, obtain following K × M signal altogether:
Signalling sends signal W by the antenna element 1 in the transmitting antenna 1 after adjusting equivalence angle of declination11, send signal W by the antenna element 2 in transmitting antenna 112, the rest may be inferred, sends signal W by the antenna element K in the transmitting antenna M after adjusting equivalence angle of declinationKM。
4th kind sends mode: signalling selects angle of declination α from the first codebook set C1 pre-set1..., αM, the equivalent angle of declination of transmitting antenna 1 is adjusted to α1, the equivalent angle of declination of transmitting antenna 2 is adjusted to α2, the rest may be inferred, and the equivalent angle of declination of transmitting antenna M is adjusted to αM, from the second codebook set C2 pre-set, select K matrix V1..., VK, it is necessary to the signal stream being sent to receiving side signal is S=[S1..., SJ], calculate matrix Vi(i=1 ..., K) associate matrix Vi H, by associate matrix Vi HSV can be obtained after carrying out multiplication with Si H, it is possible to obtain M signal, obtain following K × M signal altogether:
Signalling sends signal W by the antenna element 1 in the transmitting antenna 1 after adjusting equivalence angle of declination11, send signal W by the antenna element 2 in transmitting antenna 112, the rest may be inferred, sends signal W by the antenna element K in the transmitting antenna M after adjusting equivalence angle of declinationKM。
From above-mentioned processing procedure, in embodiment of the present invention technical scheme, first codebook set and the second codebook set are set for 3DMIMO system in advance, first codebook set comprises several default angle of declinations, second codebook set comprises several default matrixes, when signalling in 3DMIMO system needs to receiving side signal transmission signal, several angle of declinations are selected from the first codebook set, and according to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted, several matrixes are selected from the second codebook set, and according to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted, then pass through the transmitting antenna after adjusting equivalence angle of declination, signal stream after weighting being processed is sent to described receiving side signal.Therefore, the embodiment of the present invention proposes the specific implementation transmitting signal between signalling and the receiving side signal in a kind of 3DMIMO system, the expense of code book feedback can be effectively reduced, improve systematic function, reduce the overall complexity that system realizes.
Embodiment four
With the embodiment of the present invention three propose 3DMIMO system in signaling method corresponding, the embodiment of the present invention four proposes the sender unit in a kind of 3DMIMO system, its structure as shown in Figure 6, including:
Angle of declination selects unit 61, for when described sender unit needs to send signal to signal receiving device, selecting several angle of declinations from the first codebook set pre-set；
Angle of declination adjustment unit 62, for the angle of declination selected according to angle of declination selection unit 61, is adjusted the equivalent angle of declination of transmitting antenna；
Matrix selects unit 63, for selecting several matrixes from the second codebook set pre-set；
Weighting processing unit 64, for the matrix selected according to matrix selection unit 63, processes needing the signal stream being sent to signal receiving device to be weighted；
Signal transmitting unit 65, for adjusting the transmitting antenna after equivalence angle of declination by angle of declination adjustment unit 62, is weighted weighting processing unit 64 the signal stream after processing and is sent to described signal receiving device.
It is preferred that described sender unit also includes inclination angle mark receives unit, before selecting unit 61 to select several angle of declinations from the first codebook set pre-set at angle of declination, receive several inclination angles mark of signal receiving device feedback；
Angle of declination selects unit 61, specifically for receiving, according to inclination angle mark, several inclination angles mark that unit receives, selects corresponding number angle of declination from the first codebook set pre-set；
Described signal receiving device also includes matrix identification and receives unit, before selecting unit 63 to select several matrixes from the second codebook set pre-set at matrix, receives several matrix identification of signal receiving device feedback；
Matrix selects unit 63, specifically for receiving, according to matrix identification, several matrix identification that unit receives, selects corresponding number matrix from the second codebook set pre-set.
More preferably, inclination angle mark receives unit, specifically for receiving several inclination angles mark that receiving side signal feeds back respectively for default each subband；
Angle of declination selects unit 61, specifically for for needing to send each PRB of signal to receiving side signal, determine several inclination angles mark of receiving side signal subband feedback belonging to this PRB respectively, and according to the inclination angle mark determined, from the first codebook set pre-set, select corresponding number angle of declination；
Angle of declination adjustment unit 62, specifically for for needing to send to receiving side signal each PRB of signal, selecting unit 61 for this PRB angle of declination selected according to angle of declination respectively, the equivalent angle of declination of this PRB of each transmitting antenna be adjusted.
More preferably, matrix identification receives unit, specifically for receiving several matrix identification that receiving side signal feeds back respectively for default each subband；
Matrix selects unit 63, specifically for for needing to send each PRB of signal to receiving side signal, determine receiving side signal several matrix identification of subband feedback belonging to this PRB respectively, and according to the matrix identification determined, from the second codebook set pre-set, select corresponding number matrix；
Weighting processing unit 64, specifically for for needing to send each PRB of signal to receiving side signal, selecting unit 63 for this PRB matrix selected according to matrix respectively, processes needing the signal stream being sent to receiving side signal to be weighted in this PRB.
It is preferred that angle of declination selects unit 61, specifically for selecting an angle of declination from the first codebook set pre-set；
Angle of declination adjustment unit 62, specifically for for each transmitting antenna, being adjusted to the angle of declination that angle of declination selects unit 61 to select respectively by the equivalent angle of declination of this transmitting antenna.
It is preferred that angle of declination selects unit 61, specifically for selecting M angle of declination from the first codebook set pre-set, M is the number of the transmitting antenna of sender unit；
Angle of declination adjustment unit 62 specifically includes:
Angle of declination determines subelement, for for each transmitting antenna, respectively in each angle of declination that angle of declination selects unit 61 to select, it is determined that the angle of declination that this transmitting antenna is corresponding；
Second angle of declination adjusts subelement, for for each transmitting antenna, the equivalent angle of declination of this transmitting antenna being adjusted to angle of declination respectively and determines angle of declination that subelement is determined, that this transmitting antenna is corresponding.
It is preferred that matrix selects unit 63, specifically for selecting a matrix from the second codebook set pre-set；
Weighting processing unit 64 specifically includes:
First associate matrix computation subunit, for calculating the associate matrix of the matrix that matrix selects unit 63 to select, wherein, matrix selects the number M of the transmitting antenna that line number is described sender unit of matrix that unit 63 selects, and columns is need to be sent to the number J of signal in the signal stream of signal receiving device；
First operator unit, associate matrix and the signal stream needing to be sent to signal receiving device for the first associate matrix computation subunit being calculated carry out multiplication, obtain M signal；
Signal transmitting unit 65 specifically includes:
Subelement determined by first transmitting antenna, for each signal of obtaining after being weighted processing for weighting processing unit 64, determine respectively this signal corresponding, angle of declination adjustment unit 62 adjust the transmitting antenna after equivalence angle of declination；
First signal sends subelement, for each signal obtained after being weighted process for weighting processing unit 64, determine transmitting antenna that subelement is determined, that this signal is corresponding respectively through the first transmitting antenna, send the signal to described signal receiving device.
It is preferred that matrix selects unit 63, the number of the antenna element that each transmitting antenna specifically for selecting K matrix, K to be sender unit from the second codebook set pre-set comprises；
Weighting processing unit 64 specifically includes:
Second associate matrix computation subunit, for each matrix selected for matrix selection unit 63, calculate the associate matrix of this matrix respectively, wherein, matrix selects the number M of the transmitting antenna that line number is described sender unit of each matrix that unit 63 selects, and columns is need to be sent to the number J of signal in the signal stream of signal receiving device；
Second operator unit, for each matrix selected for matrix selection unit 63, associate matrix that second associate matrix computation subunit calculated respectively, this matrix and need to be sent to the signal stream of signal receiving device and carry out multiplication, obtains M signal；
Signal transmitting unit 65 specifically includes:
Subelement determined by second transmitting antenna, for each signal of obtaining after being weighted processing for weighting processing unit 64, determine respectively this signal corresponding, angle of declination adjustment unit 62 adjust the transmitting antenna after equivalence angle of declination；
Antenna element determines subelement, for each signal for obtaining after being weighted process for weighting processing unit 64, determine in the antenna element that transmitting antenna that subelement is determined, that this signal is corresponding comprises at the second transmitting antenna respectively, it is determined that the antenna element that this signal is corresponding；
Secondary signal sends subelement, for each signal obtained after being weighted process for weighting processing unit 64, determines antenna element that subelement is determined, that this signal is corresponding respectively through antenna element, sends the signal to described signal receiving device.
Obviously, the present invention can be carried out various change and modification without deviating from the spirit and scope of the present invention by those skilled in the art.So, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (28)
1. the code book feedback method in a three-dimensional multiple-input and multiple-output 3DMIMO system, it is characterised in that including:
Receiving side signal in 3DMIMO system selects several angle of declinations from the first codebook set pre-set, and select several matrixes from the second codebook set pre-set, second codebook set comprises several matrix subclass, each matrix subclass comprises several matrixes, each matrix subclass is corresponding with the signal number in the signal stream that receiving side signal receives respectively, in matrix subclass, the line number of each matrix is the number of the transmitting antenna of signalling, columns is the signal number in the signal stream that receiving side signal receives, receiving side signal selects several matrixes from the second codebook set pre-set, specifically include: the signal number in the signal stream that receiving side signal receives as required, in several matrix subclass that the second codebook set comprises, choose and need matrix subclass corresponding to signal number in the signal stream that receives；And select several matrixes from the matrix subclass selected；
The matrix identification of the matrix being identified at the inclination angle of the angle of declination selected and selecting is sent to signalling.
2. the method for claim 1, it is characterised in that receiving side signal selects several angle of declinations from the first codebook set pre-set, and selects several matrixes from the second codebook set pre-set, and specifically includes:
Receiving side signal, for default each subband, selects several angle of declinations respectively from the first codebook set pre-set, and selects several matrixes from the second codebook set pre-set；
The matrix identification of the matrix being identified at the inclination angle of the angle of declination selected and selecting is sent to signalling, specifically includes:
Receiving side signal is for default each subband, and the matrix identification of the matrix being identified at the inclination angle of the angle of declination selected for this subband respectively and selecting is sent to signalling.
3. the method for claim 1, it is characterised in that receiving side signal selects several angle of declinations from the first codebook set pre-set, and specifically includes；
Receiving side signal selects an angle of declination from the first codebook set pre-set.
4. the method for claim 1, it is characterised in that receiving side signal selects several angle of declinations from the first codebook set pre-set, and specifically includes；
Receiving side signal selects M angle of declination from the first codebook set pre-set, and M is the number of the transmitting antenna of signalling.
5. the method for claim 1, it is characterised in that receiving side signal selects several matrixes from the second codebook set pre-set, and specifically includes:
Receiving side signal selects a matrix from the second codebook set pre-set.
6. the method for claim 1, it is characterised in that receiving side signal selects several matrixes from the second codebook set pre-set, and specifically includes:
Receiving side signal selects K matrix from the second codebook set pre-set, and K is the number of the antenna element that each transmitting antenna of signalling comprises.
7. the signal receiving device in a three-dimensional multiple-input and multiple-output 3DMIMO system, it is characterised in that including:
Angle of declination selects unit, for selecting several angle of declinations from the first codebook set pre-set；
Matrix selects unit, for selecting several matrixes from the second codebook set pre-set, second codebook set comprises several matrix subclass, each matrix subclass comprises several matrixes, each matrix subclass is corresponding with the signal number in the signal stream that receiving side signal receives respectively, in matrix subclass, the line number of each matrix is the number of the transmitting antenna of sender unit, and columns is the signal number in the signal stream that receiving side signal receives；Matrix selects unit to specifically include: matrix subclass chooses subelement, for needing the signal number in the signal stream received according to described signal receiving device, in several matrix subclass that the second codebook set comprises, choose the matrix subclass corresponding with the signal number in the signal stream needing reception；Matrix selects subelement, selects several matrixes for choosing the matrix subclass that subelement selects from matrix subclass；
Transmitting element, the matrix identification of the matrix that the inclination angle mark and matrix for angle of declination selects angle of declination that Unit selection goes out selects Unit selection to go out is sent to sender unit.
8. signal receiving device as claimed in claim 7, it is characterised in that angle of declination selects unit, specifically for pin each subband to received signal, selects several angle of declinations respectively from the first codebook set pre-set；
Matrix selects unit, specifically for for default each subband, selecting several matrixes respectively from the second codebook set pre-set；
Transmitting element, specifically for for default each subband, selects the matrix identification of the matrix that the inclination angle mark of the angle of declination that unit selects for this subband and matrix select unit to select for this subband to be sent to signalling respectively by angle of declination.
9. signal receiving device as claimed in claim 7, it is characterised in that angle of declination selects unit, specifically for selecting an angle of declination from the first codebook set pre-set.
10. signal receiving device as claimed in claim 7, it is characterised in that angle of declination selects unit, specifically for selecting M angle of declination from the first codebook set pre-set, M is the number of the transmitting antenna of sender unit.
11. signal receiving device as claimed in claim 7, it is characterised in that matrix selects unit, specifically for selecting a matrix from the second codebook set pre-set.
12. signal receiving device as claimed in claim 7, it is characterised in that matrix selects unit, the number of the antenna element that each transmitting antenna specifically for selecting K matrix, K to be sender unit from the second codebook set pre-set comprises.
13. the signaling method in a three-dimensional multiple-input and multiple-output 3DMIMO system, it is characterised in that including:
When signalling in 3DMIMO system needs to receiving side signal transmission signal, from the first codebook set pre-set, select several angle of declinations, and according to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted；
Signalling receives several matrix identification of receiving side signal feedback, according to several matrix identification received, corresponding number matrix is selected from the second codebook set pre-set, and according to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted, wherein, second codebook set comprises several matrix subclass, each matrix subclass comprises several matrixes, each matrix subclass is corresponding with the signal number in the signal stream that receiving side signal receives respectively, in matrix subclass, the line number of each matrix is the number of the transmitting antenna of signalling, columns is the signal number in the signal stream that receiving side signal receives, several matrix identification described are that described receiving side signal sends in such a way: the signal number in the signal stream that receiving side signal receives as required, in several matrix subclass that the second codebook set comprises, choose and need matrix subclass corresponding to signal number in the signal stream that receives；And select several matrixes from the matrix subclass selected, the matrix identification of the matrix selected is sent to signalling；
By adjust equivalence angle of declination after transmitting antenna, by weighting process after signal stream be sent to described receiving side signal.
14. method as claimed in claim 13, it is characterised in that signalling also includes before selecting several angle of declinations from the first codebook set pre-set:
Signalling receives several inclination angles mark of receiving side signal feedback；
Signalling selects several angle of declinations from the first codebook set pre-set, and specifically includes:
According to several inclination angles mark received, from the first codebook set pre-set, select corresponding number angle of declination.
15. method as claimed in claim 14, it is characterised in that signalling receives several inclination angles mark of receiving side signal feedback, specifically includes:
Signalling receives several inclination angles mark that receiving side signal feeds back respectively for default each subband；
According to several inclination angles mark received, from the first codebook set pre-set, select corresponding number angle of declination, specifically include:
Signalling is for needing to send each Physical Resource Block PRB of signal to receiving side signal, determine several inclination angles mark of receiving side signal subband feedback belonging to this PRB respectively, and according to the inclination angle mark determined, from the first codebook set pre-set, select corresponding number angle of declination；
According to the angle of declination selected, the equivalent angle of declination of transmitting antenna is adjusted, specifically includes:
Signalling is for needing to send each PRB of signal to receiving side signal, respectively according to for this PRB angle of declination selected, the equivalent angle of declination of this PRB of each transmitting antenna being adjusted.
16. method as claimed in claim 14, it is characterised in that signalling receives several matrix identification of receiving side signal feedback, specifically includes:
Signalling receives several matrix identification that receiving side signal feeds back respectively for default each subband；
According to several matrix identification received, from the second codebook set pre-set, select corresponding number matrix, specifically include:
Signalling is for needing to send each PRB of signal to receiving side signal, determine receiving side signal several matrix identification of subband feedback belonging to this PRB respectively, and according to the matrix identification determined, from the second codebook set pre-set, select corresponding number matrix；
According to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted, specifically include:
Signalling is for needing to send each PRB of signal to receiving side signal, respectively according to for this PRB matrix selected, processing needing the signal stream being sent to receiving side signal to be weighted in this PRB.
17. method as claimed in claim 13, it is characterised in that signalling selects several angle of declinations from the first codebook set pre-set, and specifically includes:
Signalling selects an angle of declination from the first codebook set pre-set；
The equivalent angle of declination of transmitting antenna, according to the angle of declination selected, is adjusted, specifically includes by signalling:
The equivalent angle of declination of this transmitting antenna, for each transmitting antenna, is adjusted to the angle of declination selected by signalling respectively.
18. method as claimed in claim 13, it is characterised in that signalling selects several angle of declinations from the first codebook set pre-set, and specifically includes:
Signalling selects M angle of declination from the first codebook set pre-set, and M is the number of the transmitting antenna of signalling；
The equivalent angle of declination of transmitting antenna, according to the angle of declination selected, is adjusted, specifically includes by signalling:
Signalling is for each transmitting antenna, respectively in each angle of declination selected, it is determined that the angle of declination that this transmitting antenna is corresponding, and the equivalent angle of declination of this transmitting antenna is adjusted to this angle of declination determined.
19. method as claimed in claim 13, it is characterised in that signalling selects several matrixes from the second codebook set pre-set, and specifically includes:
Signalling selects a matrix from the second codebook set pre-set；
According to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted, specifically include:
Calculating the associate matrix of matrix selected, wherein, the line number of the matrix selected is the number M of the transmitting antenna of described signalling, and columns is need to be sent to the number J of signal in the signal stream of receiving side signal；
By the associate matrix calculated and need the signal stream being sent to receiving side signal to carry out multiplication, obtain M signal；
By adjust equivalence angle of declination after transmitting antenna, by weighting process after signal stream be sent to described receiving side signal, specifically include:
The each signal obtained after processing for weighting, determines this signal transmitting antenna corresponding, after adjustment equivalence angle of declination respectively, and the transmitting antenna being determined by out sends the signal to described receiving side signal.
20. method as claimed in claim 13, it is characterised in that signalling selects several matrixes from the second codebook set pre-set, and specifically includes:
Signalling selects K matrix from the second codebook set pre-set, and K is the number of the antenna element that each transmitting antenna of signalling comprises；
According to the matrix selected, process needing the signal stream being sent to receiving side signal to be weighted, specifically include:
For each matrix selected, perform respectively:
Calculating the associate matrix of this matrix, wherein, the number M of the transmitting antenna that line number is described signalling of each matrix selected, columns is need to be sent to the number J of signal in the signal stream of receiving side signal；
This associate matrix calculated and the signal stream needing to be sent to receiving side signal are carried out multiplication, obtains M signal；
By adjust equivalence angle of declination after transmitting antenna, by weighting process after signal stream be sent to described receiving side signal, specifically include:
The each signal obtained after processing for weighting, determine this signal transmitting antenna corresponding, after adjustment equivalence angle of declination respectively, and determine the antenna element that this signal is corresponding in the antenna element that the transmitting antenna determined comprises, and the antenna element being determined by out sends the signal to described receiving side signal.
21. the sender unit in a three-dimensional multiple-input and multiple-output 3DMIMO system, it is characterised in that including:
Angle of declination selects unit, for when described sender unit needs to send signal to signal receiving device, selecting several angle of declinations from the first codebook set pre-set；
Angle of declination adjustment unit, for the angle of declination gone out according to angle of declination selection Unit selection, is adjusted the equivalent angle of declination of transmitting antenna；
Matrix selects unit, for receiving, according to matrix identification, several matrix identification that unit receives, selects corresponding number matrix from the second codebook set pre-set；
Weighting processing unit, for the matrix gone out according to matrix selection Unit selection, processes needing the signal stream being sent to signal receiving device to be weighted；
Signal transmitting unit, for adjusting the transmitting antenna after equivalence angle of declination by angle of declination adjustment unit, is weighted weighting processing unit the signal stream after processing and is sent to described signal receiving device；
Matrix identification receives unit, before selecting unit to select several matrixes from the second codebook set pre-set at matrix, receive several matrix identification of signal receiving device feedback, wherein, second codebook set comprises several matrix subclass, each matrix subclass comprises several matrixes, each matrix subclass is corresponding with the signal number in the signal stream that receiving side signal receives respectively, in matrix subclass, the line number of each matrix is the number of the transmitting antenna of signalling, columns is the signal number in the signal stream that receiving side signal receives, several matrix identification described are that described receiving side signal sends in such a way: the signal number in the signal stream that receiving side signal receives as required, in several matrix subclass that the second codebook set comprises, choose and need matrix subclass corresponding to signal number in the signal stream that receives；And select several matrixes from the matrix subclass selected, the matrix identification of the matrix selected is sent to matrix identification and receives unit.
22. sender unit as claimed in claim 21, it is characterised in that described sender unit also includes:
Inclination angle mark receives unit, before selecting unit to select several angle of declinations from the first codebook set pre-set at angle of declination, receives several inclination angles mark of signal receiving device feedback；
Angle of declination selects unit, specifically for receiving, according to inclination angle mark, several inclination angles mark that unit receives, selects corresponding number angle of declination from the first codebook set pre-set.
23. sender unit as claimed in claim 22, it is characterised in that inclination angle mark receives unit, specifically for receiving several inclination angles mark that receiving side signal feeds back respectively for default each subband；
Angle of declination selects unit, specifically for for needing to send each Physical Resource Block PRB of signal to receiving side signal, determine several inclination angles mark of receiving side signal subband feedback belonging to this PRB respectively, and according to the inclination angle mark determined, from the first codebook set pre-set, select corresponding number angle of declination；
Angle of declination adjustment unit, specifically for for needing to send to receiving side signal each PRB of signal, selecting unit for this PRB angle of declination selected according to angle of declination respectively, the equivalent angle of declination of this PRB of each transmitting antenna be adjusted.
24. sender unit as claimed in claim 22, it is characterised in that matrix identification receives unit, specifically for receiving several matrix identification that receiving side signal feeds back respectively for default each subband；
Matrix selects unit, specifically for for needing to send each PRB of signal to receiving side signal, determine receiving side signal several matrix identification of subband feedback belonging to this PRB respectively, and according to the matrix identification determined, from the second codebook set pre-set, select corresponding number matrix；
Weighting processing unit, specifically for for needing to send each PRB of signal to receiving side signal, selecting unit for this PRB matrix selected according to matrix respectively, processes needing the signal stream being sent to receiving side signal to be weighted in this PRB.
25. sender unit as claimed in claim 21, it is characterised in that angle of declination selects unit, specifically for selecting an angle of declination from the first codebook set pre-set；
Angle of declination adjustment unit, specifically for for each transmitting antenna, being adjusted to the angle of declination that angle of declination selects Unit selection to go out respectively by the equivalent angle of declination of this transmitting antenna.
26. sender unit as claimed in claim 21, it is characterised in that angle of declination selects unit, specifically for selecting M angle of declination from the first codebook set pre-set, M is the number of the transmitting antenna of sender unit；
Angle of declination adjustment unit specifically includes:
Angle of declination determines subelement, for for each transmitting antenna, respectively in each angle of declination that angle of declination selects Unit selection to go out, it is determined that the angle of declination that this transmitting antenna is corresponding；
Second angle of declination adjusts subelement, for for each transmitting antenna, the equivalent angle of declination of this transmitting antenna being adjusted to angle of declination respectively and determines angle of declination that subelement is determined, that this transmitting antenna is corresponding.
27. sender unit as claimed in claim 21, it is characterised in that matrix selects unit, specifically for selecting a matrix from the second codebook set pre-set；
Weighting processing unit specifically includes:
First associate matrix computation subunit, for calculating the associate matrix of the matrix that matrix selects Unit selection to go out, wherein, matrix selects the number M of the transmitting antenna that line number is described sender unit of matrix that Unit selection goes out, and columns is need to be sent to the number J of signal in the signal stream of signal receiving device；
First operator unit, associate matrix and the signal stream needing to be sent to signal receiving device for the first associate matrix computation subunit being calculated carry out multiplication, obtain M signal；
Signal transmitting unit specifically includes:
Subelement determined by first transmitting antenna, for each signal obtained after being weighted process for weighting processing unit, determines this signal transmitting antenna corresponding, after angle of declination adjustment unit adjustment equivalence angle of declination respectively；
First signal sends subelement, for each signal obtained after being weighted process for weighting processing unit, determines transmitting antenna that subelement is determined, that this signal is corresponding respectively through the first transmitting antenna, sends the signal to described signal receiving device.
28. sender unit as claimed in claim 21, it is characterised in that matrix selects unit, the number of the antenna element that each transmitting antenna specifically for selecting K matrix, K to be sender unit from the second codebook set pre-set comprises；
Weighting processing unit specifically includes:
Second associate matrix computation subunit, for each matrix gone out for matrix selection Unit selection, calculate the associate matrix of this matrix respectively, wherein, matrix selects the number M of the transmitting antenna that line number is described sender unit of each matrix that Unit selection goes out, and columns is need to be sent to the number J of signal in the signal stream of signal receiving device；
Second operator unit, for each matrix gone out for matrix selection Unit selection, associate matrix that second associate matrix computation subunit calculated respectively, this matrix and need to be sent to the signal stream of signal receiving device and carry out multiplication, obtains M signal；
Signal transmitting unit specifically includes:
Subelement determined by second transmitting antenna, for each signal obtained after being weighted process for weighting processing unit, determines this signal transmitting antenna corresponding, after angle of declination adjustment unit adjustment equivalence angle of declination respectively；
Antenna element determines subelement, for each signal for obtaining after being weighted process for weighting processing unit, determine in the antenna element that transmitting antenna that subelement is determined, that this signal is corresponding comprises at the second transmitting antenna respectively, it is determined that the antenna element that this signal is corresponding；
Secondary signal sends subelement, for each signal obtained after being weighted process for weighting processing unit, determines antenna element that subelement is determined, that this signal is corresponding respectively through antenna element, sends the signal to described signal receiving device.
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| CN201210017691.7A CN103220026B (en) | 2012-01-19 | 2012-01-19 | Code book feedback method and signal receiving device, signaling method and device |
| PCT/CN2013/070666 WO2013107377A1 (en) | 2012-01-19 | 2013-01-18 | Codebook feedback method, signal receiving device and signal sending method and device |
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| CN105453471B (en) * | 2013-08-13 | 2018-12-04 | 日电（中国）有限公司 | Method and apparatus for channel estimation and feedback in three-dimensional multi-input multi-output system |
| WO2015113205A1 (en) * | 2014-01-28 | 2015-08-06 | 富士通株式会社 | Beam selection method, apparatus and communication system |
| CN105794041B (en) * | 2014-03-31 | 2019-08-20 | 富士通株式会社 | Code book determining device, information feedback device and communication system |
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