CN102122983A - Method and equipment for generating codebook and sending and feeding back information - Google Patents

Method and equipment for generating codebook and sending and feeding back information Download PDF

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Publication number
CN102122983A
CN102122983A CN2011100972137A CN201110097213A CN102122983A CN 102122983 A CN102122983 A CN 102122983A CN 2011100972137 A CN2011100972137 A CN 2011100972137A CN 201110097213 A CN201110097213 A CN 201110097213A CN 102122983 A CN102122983 A CN 102122983A
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code book
rank
clock
dimension
described code
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CN102122983B (en
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张然然
高秋彬
苏昕
荆梅芳
骆纯
拉盖施
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China Academy of Telecommunications Technology CATT
Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to PCT/CN2012/073431 priority patent/WO2012142912A1/en
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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
    • 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
    • H04B7/0482—Adaptive codebooks
    • 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
    • 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
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account

Abstract

The invention discloses a method and equipment for generating a codebook and sending and feeding back information. The method for sending the information comprises the following steps: after the codebook is generated, receiving signals containing codebook index information and extracting the codebook index information; according to the codebook index information, selecting corresponding precoding matrixes from the codebook or subsets of the codebook; precoding data to be sent according to the precoding matrixes; and sending the precoded signals to a receiving end. The method of feeding back channel status information comprises the following steps: receiving information sent by a sending end; estimating channel information on the basis of the received information; selecting the corresponding precoding matrixes from the codebook or the subsets of the codebook according to the channel information,; and sending signals containing codebook index information corresponding to the selected precoding matrixes. By the invention, dual-precoding matrix index feedback can be supported, the quantization accuracy of small-interval dual-polarization array channels can be improved, and the quantization accuracy of small-interval linear array channels can be enhanced.

Description

A kind of generation of code book, the transmission of information, feedback method and equipment
Technical field
The present invention relates to wireless communication technology, particularly the transmission of the generation of code book, information, feedback method and equipment.
Background technology
At present, the multi-antenna technology of physical layer has become one of key technology of next generation wireless communication system.Multi-antenna technology has lot of advantages, improve the throughput of system such as the spatial multiplexing gain that can utilize many antennas, also can utilize the diversity gain of many antennas to improve systematic function, perhaps utilize the directive gain of antenna to distinguish receiving terminal and eliminate interference between receiving terminal or the like.
MIMO (Multiple-Input Multiple-Output, multiple-input and multiple-output) system uses a plurality of emissions, reception antenna, utilize signal sky, the time, frequency-domain combined processing obtains speed, diversity and array gain.In the mimo system, if transmitter can be known channel information in some way, just can be optimized sending signal, to improve the quality of reception and reduction requirement to the receiver complexity according to the characteristic of channel.The general feedback system that adopts quantized channel information in real system is to reduce feedback overhead and feedback delay.The quantification of channel information can also can be the pretreatment parameter that receiver is recommended use at channel matrix and statistic thereof.Channel information is mapped in the set of limited element formation through after quantizing, and this set is called as code book.
In the closed-loop MIMO system based on code book, code book is the key that influences systematic function.At Rel-8LTE (Long Term Evolution, Long Term Evolution) transmission mode 4,5,6 has all adopted PMI (Precoding Matrix Indicator, pre-coding matrix index) feedback mechanism, be UE (User Equipment, subscriber equipment) according to the public guide frequency measured channel, and the code word label information that reports it recommend to use to base station eNB.For example, the public guide frequency port is 4 o'clock, adopts the code book based on the Householder conversion, is every kind of transfer of data number of plies of transmission mode 4 for the Closed-Loop Spatial Multiplexing pattern, all exists 16 optional pre-coding matrixes.
In the transmission mode 9 of Rel-10 LTE-A (LTE-Advanced, Long Term Evolution strengthens), in order to improve quantified precision, at CSI-RS (Channel State Information-Reference Signal to channel, channel state information reference signals) port is 8 o'clock, adopts the code book of supporting two PMI feedbacks, and the various transfer of data numbers of plies for transmission mode 9 have 16 respectively, 16,4,4,4,4,4, a kind of the one PMI value is optional and 16,16,16,8,1,1,1, a kind of the 2nd PMI value is optional.
Table 1 is: be used for port 0,1,2,4 antenna codebooks of 3}
Wherein,
Figure BDA0000055963400000022
Wherein I is 4 * 4 dimension unit matrix,
Figure BDA0000055963400000023
{ the l of representing matrix 1, l 2... row.
Table 2 is: port one 5～22 one deck channel condition informations report 8 antenna codebooks of usefulness
Figure BDA0000055963400000024
Figure BDA0000055963400000031
Table 3 is: port one 5～22 2 layer channel condition information reports 8 antenna codebooks of usefulness
Figure BDA0000055963400000032
Table 4 is: port one 5～22 3 layer channel condition information reports 8 antenna codebooks of usefulness
Figure BDA0000055963400000033
Table 5 is: 5～22 layers of channel condition information of port one report 8 antenna codebooks of usefulness
Figure BDA0000055963400000041
Table 6 is: port one 5～22 5 layer channel condition information reports 8 antenna codebooks of usefulness
Figure BDA0000055963400000042
Table 7 is: port one 5～22 6 layer channel condition information reports 8 antenna codebooks of usefulness
Figure BDA0000055963400000043
Table 8 is: port one 5～22 7 layer channel condition information reports 8 antenna codebooks of usefulness
Figure BDA0000055963400000044
Table 9 is: port one 5～22 8 layer channel condition information reports 8 antenna codebooks of usefulness
Figure BDA0000055963400000046
Wherein, v m=[1 ej2 π m/32 ej4 π m/32 ej6 π m/32] T
In order further to improve power system capacity, in Rel-11, may further improve multiuser MIMO, and may introduce the multicast communication technology.No matter be multiuser MIMO or multicast communication technology, its requirement to the channel quantitative precision is all transmitted far above Single User MIMO.The deficiencies in the prior art are: be that 4 antenna codebooks based on the Householder conversion that main optimization scene designs can't satisfy the demand of these advanced transmission technologys to the channel quantitative precision with the Single User MIMO.
In addition, 4 antenna codebooks based on the Householder conversion design at the low associated scenario of little spacing linear array scene and space, space channel quantified precision for little spacing dual polarization battle array scene commonly used is not high, and do not support two PMI feedbacks (in two PMI feedbacks, a PMI perseverance wherein is 0).
Summary of the invention
Technical problem solved by the invention has been to provide a kind of generation of code book, transmission, feedback method and the equipment of information, in order to improve the channel quantitative precision.
A kind of generation method of code book is provided in the embodiment of the invention, has comprised the steps:
Determine to generate the code book desired parameters;
It is as follows to generate code book according to the parameter of determining:
Rank is 1 o'clock:
Figure BDA0000055963400000051
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000052
Or,
Figure BDA0000055963400000061
Or,
Rank is 3 o'clock,
Figure BDA0000055963400000062
Or,
Figure BDA0000055963400000063
Figure BDA0000055963400000071
Or,
Or,
Rank is 4 o'clock,
Figure BDA0000055963400000073
Or,
Figure BDA0000055963400000081
Figure BDA0000055963400000082
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000084
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer,
Figure BDA0000055963400000085
A kind of generation method of code book is provided in the embodiment of the invention, has comprised the steps:
Determine to generate the code book desired parameters;
It is as follows to generate code book according to the parameter of determining:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000091
Or,
Figure BDA0000055963400000092
Or,
Rank is 3 o'clock:
Figure BDA0000055963400000101
Or,
Figure BDA0000055963400000102
Or,
Or,
Rank is 4 o'clock:
Or,
Figure BDA0000055963400000113
Figure BDA0000055963400000121
Figure BDA0000055963400000122
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000124
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer,
Figure BDA0000055963400000125
Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and
Figure BDA0000055963400000126
P 1, P 2Be integer.
A kind of method for sending information is provided in the embodiment of the invention, has may further comprise the steps:
Reception comprises the signal of code book index information, extracts code book index information;
According to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix;
Carry out precoding according to pre-coding matrix to sent data;
Signal after the precoding is sent to receiving terminal.
A kind of channel state information feedback method is provided in the embodiment of the invention, has may further comprise the steps:
The information that receiving end/sending end sends;
Based on the information estimating channel information that receives;
According to channel information, from the subclass of code book or code book, select corresponding pre-coding matrix;
Transmission comprises the signal of the pairing code book index information of selected pre-coding matrix.
A kind of generation equipment of code book is provided in the embodiment of the invention, has comprised:
Determination module is used for determining to generate the code book desired parameters;
Generation module, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Figure BDA0000055963400000131
Or,
Rank is 2 o'clock:
Or,
Or,
Rank is 3 o'clock,
Figure BDA0000055963400000141
Or,
Figure BDA0000055963400000142
Or,
Figure BDA0000055963400000143
Figure BDA0000055963400000151
Or,
Rank is 4 o'clock,
Figure BDA0000055963400000152
Or,
Figure BDA0000055963400000153
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000161
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer,
Figure BDA0000055963400000162
A kind of generation equipment of code book is provided in the embodiment of the invention, has comprised:
Determination module is used for determining to generate the code book desired parameters;
Generation module, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000164
Figure BDA0000055963400000171
Or,
Figure BDA0000055963400000172
Or,
Rank is 3 o'clock:
Figure BDA0000055963400000173
Figure BDA0000055963400000181
Or,
Figure BDA0000055963400000182
Or,
Or,
Rank is 4 o'clock:
Figure BDA0000055963400000192
Or,
Figure BDA0000055963400000193
Figure BDA0000055963400000201
Figure BDA0000055963400000202
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000204
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ', m " be integer,
Figure BDA0000055963400000205
Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and
Figure BDA0000055963400000206
P 1, P 2Be integer.
A kind of information transmitting apparatus is provided in the embodiment of the invention, has comprised:
Receiver module is used to receive the signal that comprises code book index information, extracts code book index information;
Select module, be used for from code book, selecting corresponding pre-coding matrix according to code book index information;
Precoding module is used for carrying out precoding according to pre-coding matrix to sent data;
Sending module is used for the signal after the precoding is sent to receiving terminal.
A kind of channel condition information feedback device is provided in the embodiment of the invention, has comprised:
Receiver module is used for the information that receiving end/sending end sends;
Estimation module is used for based on the information estimating channel information that receives;
Select module, be used for, from the subclass of code book or code book, select corresponding pre-coding matrix according to channel information;
Sending module is used to send the signal that comprises the pairing code book index information of selected pre-coding matrix.
Beneficial effect of the present invention is as follows:
As seen from the above-described embodiment, the technical scheme that provides of the embodiment of the invention can be supported two PMI feedbacks; And can improve little spacing dual polarization battle array channel quantitative precision, improve little spacing linear array channel quantitative precision simultaneously; Further, adopt uniform way, reduce change standard with the design of Rel-108 antenna codebook.
Description of drawings
Fig. 1 is a method for sending information implementing procedure schematic diagram in the embodiment of the invention;
Fig. 2 is a channel state information feedback method implementing procedure schematic diagram in the embodiment of the invention;
Fig. 3 is generation equipment one structural representation of code book in the embodiment of the invention;
Fig. 4 is generation equipment two structural representations of code book in the embodiment of the invention;
Fig. 5 is a code book memory device structural representation in the embodiment of the invention;
Fig. 6 is for having stored the storage medium structural representation of code book in the embodiment of the invention;
Fig. 7 is an information transmitting apparatus structural representation in the embodiment of the invention;
Fig. 8 is channel state information feedback device structural representation in the letter embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described.
Fig. 1 is a method for sending information implementing procedure schematic diagram, as shown in the figure, can comprise may further comprise the steps in process of transmitting:
The signal that step 101, reception comprise code book index information extracts code book index information;
Step 102, according to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix;
Step 103, carry out precoding to sent data according to pre-coding matrix;
Step 104, the signal after the precoding is sent to receiving terminal.
In the enforcement of process of transmitting, at first in step 101, receive the signal that comprises code book index information, extract code book index information.Particularly, in order to understand channel conditions, transmitting terminal receives the information such as CQI (Channel Quality Indicator, channel quality indication), Rank (order) selection and code book index information that the remote receiver feedback is come.These CQI, Rank select and code book index information will be used for follow-up transmission and processing process.
Then in step 102 according to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix.
In this step, can also carry out conversion process based on selected pre-coding matrix and obtain further pre-coding matrix, as ZF processing etc., can certainly be directly with selected pre-coding matrix directly as final pre-coding matrix.
In step 103, carry out precoding to sent data again according to pre-coding matrix.
At last in step 104, the signal after the precoding is sent to receiving terminal.
Fig. 2 is a channel state information feedback method implementing procedure schematic diagram, as shown in the figure, can may further comprise the steps in feedback procedure:
The information that step 201, receiving end/sending end send;
Step 202, based on the information estimating channel information that receives;
Step 203, according to channel information, from the subclass of code book or code book, select corresponding pre-coding matrix;
Step 204, transmission comprise the signal of the pairing code book index information of selected pre-coding matrix.
In the implementation process of channel condition information feedback, the information that sends of receiving end/sending end at first; Then according to the signal estimating channel information that receives; According to channel information, from the subclass of code book or code book, select pre-coding matrix again; Send the signal of the code book index information that comprises selected pre-coding matrix at last.
Execution mode to code book related in step 102, the step 203 describes below.
The execution mode of concrete generation code book can have two kinds, and a kind of is not have the code book under the angle situation of change to generate, and a kind of is to have the code book under the angle situation of change to generate.The angle variation refers in the change procedure of second code book index, except changing preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas can also change the beam direction of antenna array signal transmitted; There is not the variation of expression second code book index of angle variation only to change preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas, the variation that does not bring the beam direction of antenna array signal transmitted.Describe respectively below.
One, non-angular changes.
In the generative process of code book, at first determine to generate the code book desired parameters; It is as follows to generate code book according to the parameter of determining then:
Rank is 1 o'clock:
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000232
Or,
Figure BDA0000055963400000233
Figure BDA0000055963400000241
Or,
Rank is 3 o'clock,
Figure BDA0000055963400000242
Or,
Figure BDA0000055963400000243
Figure BDA0000055963400000251
Or,
Figure BDA0000055963400000252
Or,
Rank is 4 o'clock,
Figure BDA0000055963400000253
Or,
Figure BDA0000055963400000261
Figure BDA0000055963400000262
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000264
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure BDA0000055963400000265
Particularly,
Figure BDA0000055963400000266
Can change preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas, 2N is
Figure BDA0000055963400000267
The number of possible value, V mTake from N T* 1 dimension M-DFT vector set, this M DFT vector can form the wave beam of M different directions, and whole amount of space is changed into M direction, v mBe V mPreceding N T/ 2 row are used for N T/ 2 signals that antenna sent carry out figuration, α mBe in order to allow
Figure BDA0000055963400000268
Can form a N T* 1 dimension M-DFT vector and definition.It for Rank 2 o'clock pre-coding matrix
Figure BDA0000055963400000269
K ≠ 0 o'clock can make two data flow form the wave beam of different directions, and the value that k is different can change two angles between the data flow beam direction.For Rank is 3 and 4 o'clock pre-coding matrix, as Or
Figure BDA00000559634000002611
Formed 3 or 4 data flow form the wave beam of 2 different directions, and the data flow of same beam direction is by preceding N T/ 2 and N TThe orthogonality of signal transmitted phase place is distinguished the employed DFT vector of the data flow of different beams direction on/2 back root antennas
Figure BDA0000055963400000271
With
Figure BDA0000055963400000272
Mutually orthogonal.
Be specifically described below:
1, works as V mBe N T* 1 dimension 16-DFT (Discrete Fourier Transform, discrete Fourier transform (DFT)) vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for 16-PSK (Phase Shift Keying, phase shift keying) element, also promptly:
Figure BDA0000055963400000274
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000277
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000278
Figure BDA0000055963400000281
。
2, work as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 8-PSK element, also promptly:
Figure BDA0000055963400000283
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000286
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000291
。
Compare with the Rel-104 antenna codebook, this programme can reduce feedback overhead.Such as channel width is 10MHz, use 600 subcarriers totally 50 Resource Block (Resource Block altogether, RB) carry out transfer of data, 1 subband PMI of per 6 subcarriers feedback, totally 9 subbands, adopt existing 4 antenna codebooks, realize that then a subband PMI feedback needs 4 * 9=36 bit altogether, and when adopting above-mentioned code book, the all channel bandwidth is fed back 4 bits the one PMI, each subband feeds back 3 bits the 2nd PMI, then needs 3 * 9+4=31 bit can realize subband PMI feedback altogether, thereby can reduce by 5 bit feedback expenses.
3, work as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure BDA0000055963400000292
During for Q-PSK (Quadrature Phase Shift Keying, quarternary phase-shift keying (QPSK)) element, also promptly:
Figure BDA0000055963400000293
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000296
Figure BDA0000055963400000301
Or,
Described code book is 2 o'clock at Rank, k=1:
Or,
Described code book is 3 o'clock at Rank,
Figure BDA0000055963400000303
Or,
Figure BDA0000055963400000311
Or,
Figure BDA0000055963400000312
Or,
Described code book is 4 o'clock at Rank,
Figure BDA0000055963400000321
Or,
Figure BDA0000055963400000322
。
Compare with the Rel-104 antenna codebook, this programme can reduce feedback overhead.As channel width is 10MHz, use 600 subcarriers totally 50 Resource Block (Resource Block altogether, RB) carry out transfer of data, 1 subband PMI of per 6 subcarriers feedback, totally 9 subbands, then above-mentioned code book realizes that subband PMI feedback only needs 2 * 9+4=22 bit, and the Rel-104 antenna codebook needs 4 * 9=36 bit feedback information.
4, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000323
For
During the 16-PSK element, also promptly:
Figure BDA0000055963400000324
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000332
。
5, work as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure BDA0000055963400000333
During for the 16-PSK element, also promptly:
Figure BDA0000055963400000341
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000344
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000345
。
6, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000352
During for the QPSK element, also promptly:
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000356
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000357
Figure BDA0000055963400000361
。
7, work as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure BDA0000055963400000362
During for the QPSK element, also promptly:
Figure BDA0000055963400000363
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000366
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000367
Figure BDA0000055963400000371
。
Two, there is angle to change.
In the generative process of code book, at first determine to generate the code book desired parameters; It is as follows to generate code book according to the parameter of determining then:
Rank is 1 o'clock:
Figure BDA0000055963400000372
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000373
Figure BDA0000055963400000381
Or,
Or,
Rank is 3 o'clock:
Figure BDA0000055963400000383
Figure BDA0000055963400000391
Or,
Or,
Figure BDA0000055963400000393
Figure BDA0000055963400000401
Or,
Rank is 4 o'clock:
Or,
Figure BDA0000055963400000403
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000414
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure BDA0000055963400000415
Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and
Figure BDA0000055963400000416
P 1, P 2Be integer.
Particularly,
Figure BDA0000055963400000417
Can change preceding N T/ 2 and N TThe phase relation of signal transmitted on/2 back root antennas, 2N is
Figure BDA0000055963400000418
The number of possible value, V mTake from N T* 1 dimension M-DFT vector set, this M DFT vector can form the wave beam of M different directions, and whole amount of space is changed into M direction, v mBe V mPreceding N T/ 2 row are used for N T/ 2 signals that antenna sent carry out figuration, α mBe in order to allow
Figure BDA0000055963400000419
Can form a N T* 1 dimension M-DFT vector and definition.For each Rank code book, P 1Optional DFT vector (corresponding to the wave beam of different directions) is divided into P 1Group, every group comprises K different beam direction, the fine setting of beam direction in the variation by the k value can realize on the same group, and P 2The granularity of beam direction is passed through i between expression group and the group 1The variation of value can realize the adjustment in a big way of beam direction.It for Rank 2 o'clock pre-coding matrix K ' ≠ k " time can make two data flow form the wave beam of different directions, (k ', the value that k ") is different can change two angles between the data flow beam direction.For Rank be 3 and 4 o'clock pre-coding matrix formed 3 or 4 data flow form the wave beam of 2 different directions, the data flow of same beam direction is by preceding N T/ 2 and N TThe orthogonality of signal transmitted phase place is distinguished the employed DFT vector of the data flow of different beams direction on/2 back root antennas
Figure BDA0000055963400000421
With
Figure BDA0000055963400000422
Mutually orthogonal.
Be specifically described below:
1, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector, During for the QPSK element, also promptly:
Figure BDA0000055963400000424
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank,
Figure BDA0000055963400000427
P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank,
Figure BDA0000055963400000429
P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA00000559634000004210
Figure BDA0000055963400000431
Or,
Described code book is 3 o'clock at Rank,
Figure BDA0000055963400000432
P 1=P 2=8, k=0,2,4,6:
Figure BDA0000055963400000433
Figure BDA0000055963400000441
Or,
Figure BDA0000055963400000442
Figure BDA0000055963400000451
Or,
Described code book is 4 o'clock at Rank,
Figure BDA0000055963400000452
P 1=P 2=8, k=0,2,4,6:
Figure BDA0000055963400000453
Or
Figure BDA0000055963400000454
Figure BDA0000055963400000461
。
Compare with 3 scheme, Rank 3 in this programme and Rank 4 code books can improve the signal to noise ratio balance of the two-layer data flow in the same code word, thereby improve transmission performance.
2, work as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure BDA0000055963400000462
During for the QPSK element, also promptly:
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3,
(k′，k″)∈{(0，1)，(1，2)，(0，3)，(1，3)}：
Figure BDA0000055963400000471
。
3, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000472
During for the QPSK element, also promptly:
Figure BDA0000055963400000473
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure BDA0000055963400000476
Figure BDA0000055963400000481
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA0000055963400000482
。
4, work as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000483
During for the QPSK element,
Figure BDA0000055963400000491
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank, P 1=P 2=4, k=0,1,2,3:
Figure BDA0000055963400000494
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA0000055963400000495
Figure BDA0000055963400000501
。
In the enforcement, at above-mentioned code book, the present invention also provides a kind of storage means of code book, can comprise:
At first determine code book, this code book also is each code book that above-mentioned generation method is generated; Store code book then.
Based on same inventive concept, also provide code book to generate equipment, information transmitting apparatus, channel condition information feedback device, memory device, storage medium in the embodiment of the invention, because these equipment principle of dealing with problems and method for generating codebooks, method for sending information, channel state information feedback method, storage means are similar, therefore the enforcement of these equipment can repeat part and repeat no more referring to the enforcement of method.
Fig. 3 is generation equipment one structural representation of code book, as shown in the figure, can comprise in generation equipment:
Determination module 301 is used for determining to generate the code book desired parameters;
Generation module 302, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Figure BDA0000055963400000502
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000511
Or,
Figure BDA0000055963400000512
Or,
Rank is 3 o'clock,
Figure BDA0000055963400000513
Or,
Figure BDA0000055963400000521
Or,
Figure BDA0000055963400000522
Or Rank is 4 o'clock,
Figure BDA0000055963400000523
Figure BDA0000055963400000531
Or,
Figure BDA0000055963400000532
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure BDA0000055963400000535
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure BDA0000055963400000536
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure BDA0000055963400000537
During for the 16-PSK element:
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000541
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000542
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure BDA0000055963400000543
During for the 8-PSK element:
Figure BDA0000055963400000551
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000554
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000555
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure BDA0000055963400000556
During for the Q-PSK element:
Figure BDA0000055963400000561
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000564
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000565
Or,
Described code book is 3 o'clock at Rank,
Figure BDA0000055963400000566
Figure BDA0000055963400000571
Or,
Figure BDA0000055963400000572
Or,
Figure BDA0000055963400000573
Or,
Described code book is 4 o'clock at Rank,
Figure BDA0000055963400000582
Or,
Figure BDA0000055963400000583
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000584
During for the 16-PSK element,
Figure BDA0000055963400000591
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000595
Figure BDA0000055963400000601
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure BDA0000055963400000602
During for the 16-PSK element,
Figure BDA0000055963400000603
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000606
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000607
Figure BDA0000055963400000611
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000612
During for the QPSK element,
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Figure BDA0000055963400000616
Or,
Described code book is 2 o'clock at Rank, k=1:
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure BDA0000055963400000622
During for the QPSK element,
Figure BDA0000055963400000623
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank:
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure BDA0000055963400000627
Figure BDA0000055963400000631
。
Fig. 4 is generation equipment two structural representations of code book, as shown in the figure, can comprise in generation equipment:
Determination module 401 is used for determining to generate the code book desired parameters;
Generation module 402, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Figure BDA0000055963400000632
Or,
Rank is 2 o'clock:
Figure BDA0000055963400000641
Or,
Figure BDA0000055963400000642
Or,
Rank is 3 o'clock:
Figure BDA0000055963400000643
Figure BDA0000055963400000651
Or,
Or,
Figure BDA0000055963400000653
Figure BDA0000055963400000661
Or,
Rank is 4 o'clock:
Figure BDA0000055963400000662
Or,
Figure BDA0000055963400000671
Figure BDA0000055963400000672
Wherein, V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M ∈ { 4,8,16 , · · · } v m = 1 e j 2 πm / M · · · e j 2 ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M ;
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure BDA0000055963400000675
Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure BDA0000055963400000677
During for the QPSK element,
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 32 ,
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank,
Figure BDA00000559634000006711
P 1=P 2=2, k=0,1,2,3:
Figure BDA00000559634000006712
Figure BDA0000055963400000681
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA0000055963400000683
Or,
Described code book is 3 o'clock at Rank,
Figure BDA0000055963400000684
P 1=P 2=8, k=0,2,4,6:
Figure BDA0000055963400000685
Figure BDA0000055963400000691
Or,
Figure BDA0000055963400000692
Figure BDA0000055963400000701
Or,
Described code book is 4 o'clock at Rank, P 1=P 2=8, k=0,2,4,6:
Figure BDA0000055963400000703
Or
Figure BDA0000055963400000711
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the QPSK element,
Figure BDA0000055963400000713
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 16 ,
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure BDA0000055963400000716
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA0000055963400000717
Figure BDA0000055963400000721
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000722
During for the QPSK element,
Figure BDA0000055963400000723
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64 ,
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure BDA0000055963400000726
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA0000055963400000732
。
In the enforcement, generation module can also be further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure BDA0000055963400000733
During for the QPSK element:
Figure BDA0000055963400000741
V m = 1 e j 2 πm / M · · · e j 2 π ( N T - 1 ) m / M T , M = 64 ,
v m = 1 e j 2 πm / M · · · e j 2 π ( N T / 2 - 1 ) πm / M T , α m = e j N T πm / M
Described code book is 1 o'clock at Rank, P 1=P 2=4, k=0,1,2,3:
Figure BDA0000055963400000744
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure BDA0000055963400000745
Figure BDA0000055963400000751
。
Fig. 5 is a code book memory device structural representation, as shown in the figure, can comprise in the memory device:
Codebook determining module 501 is used for determining code book, and described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates;
Code book memory module 502 is used to store code book.
Fig. 6 is a storage medium structural representation of having stored code book, as shown in the figure, stores code book on storage medium, and described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates.
Those skilled in the art should understand that code book specific embodiment of the present invention can be provided as method, system or computer program.Therefore, code book of the present invention can adopt complete hardware embodiment, complete software implementation example or in conjunction with the form of the embodiment of software and hardware aspect in the specific implementation.And code book of the present invention can adopt the form that goes up the computer program of implementing in one or more computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
Code book in the invention process can offer these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, make the instruction of carrying out by the processor of computer or other programmable data processing device produce the device of the function that is used for the code book appointment.
These realize that the computer program instructions of code book function also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, make the instruction that is stored in this computer-readable memory produce the manufacture that comprises command device, this command device is realized the function of code book in an embodiment.
These computer program instructions of realizing the code book function also can be loaded on computer or other programmable data processing device, make on computer or other programmable devices and to carry out the sequence of operations step producing computer implemented processing, thereby the instruction of carrying out on computer or other programmable devices is provided for realizing the function of code book among the embodiment.
Fig. 7 is the information transmitting apparatus structural representation, as shown in the figure, can comprise in transmitting apparatus:
Receiver module 701 is used to receive the signal that comprises code book index information, extracts code book index information;
Select module 702, be used for according to code book index information, select corresponding pre-coding matrix from the subclass of code book or code book, described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates;
Precoding module 703 is used for carrying out precoding according to pre-coding matrix to sent data;
Sending module 704 is used for the signal after the precoding is sent to receiving terminal.
Fig. 8 is a channel condition information feedback device structural representation, as shown in the figure, can comprise:
Receiver module 801 is used for the information that receiving end/sending end sends;
Estimation module 802 is used for based on the information estimating channel information that receives;
Select module 803, be used for according to channel information, select corresponding pre-coding matrix from the subclass of code book or code book, described code book also is the code book that above-mentioned code book generation equipment generates, or presses the code book that above-mentioned method for generating codebooks generates;
Sending module 804 is used to send the signal that comprises the pairing code book index information of selected pre-coding matrix.
For the convenience of describing, the each several part of the above device is divided into various modules with function or the unit is described respectively.Certainly, when enforcement is of the present invention, can in same or a plurality of softwares or hardware, realize the function of each module or unit.
As seen from the above-described embodiment, the technical scheme that provides of the embodiment of the invention can be supported two PMI feedbacks; And can improve little spacing dual polarization battle array channel quantitative precision, improve little spacing linear array channel quantitative precision simultaneously; Further, adopt uniform way, reduce change standard with the design of Rel-108 antenna codebook.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.For example: change corresponding relation, the pre-coding matrix between the code book index and pre-coding matrix in the code book and be listed as exchange or code book is carried out the code book compression and obtain codebook subset and code book after handling such as close still in protection range.

Claims (30)

1. the generation method of a code book is characterized in that, comprises the steps:
Determine to generate the code book desired parameters;
It is as follows to generate code book according to the parameter of determining:
Rank is 1 o'clock:
Figure FDA0000055963390000011
Or,
Rank is 2 o'clock:
Figure FDA0000055963390000012
Or,
Figure FDA0000055963390000013
Figure FDA0000055963390000021
Or,
Rank is 3 o'clock,
Or,
Figure FDA0000055963390000023
Figure FDA0000055963390000031
Or,
Figure FDA0000055963390000032
Or,
Rank is 4 o'clock,
Figure FDA0000055963390000033
Or,
Figure FDA0000055963390000041
Figure FDA0000055963390000042
Wherein,
Figure FDA0000055963390000043
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents
Figure FDA0000055963390000044
Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure FDA0000055963390000045
2.
Figure 20111009721371000011
Or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure FDA0000055963390000047
During for the 16-PSK element,
Figure FDA0000055963390000048
Figure FDA0000055963390000049
Figure FDA00000559633900000410
Described code book is 1 o'clock at Rank:
Figure FDA00000559633900000411
Figure FDA0000055963390000051
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000052
3. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure FDA0000055963390000053
During for the 8-PSK element,
Figure FDA0000055963390000054
Figure FDA0000055963390000056
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000061
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000062
4. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure FDA0000055963390000063
During for the Q-PSK element,
Figure FDA0000055963390000064
Figure FDA0000055963390000065
Figure FDA0000055963390000066
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000071
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000072
Or,
Described code book is 3 o'clock at Rank,
Figure FDA0000055963390000073
Figure FDA0000055963390000081
Or,
Or,
Figure FDA0000055963390000083
Figure FDA0000055963390000091
Or,
Described code book is 4 o'clock at Rank,
Figure FDA0000055963390000092
Or,
Figure FDA0000055963390000093
5. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000094
During for the 16-PSK element,
Figure FDA0000055963390000101
Figure FDA0000055963390000102
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000104
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000105
Figure FDA0000055963390000111
。
6. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure FDA0000055963390000112
During for the 16-PSK element,
Figure FDA0000055963390000113
Figure FDA0000055963390000114
Figure FDA0000055963390000115
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000116
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000117
Figure FDA0000055963390000121
。
7. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000122
During for the QPSK element,
Figure FDA0000055963390000123
Figure FDA0000055963390000124
Figure FDA0000055963390000125
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000126
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000131
。
8. the method for claim 1 is characterized in that, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure FDA0000055963390000132
During for the QPSK element,
Figure FDA0000055963390000133
Figure FDA0000055963390000134
Figure FDA0000055963390000135
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000136
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000141
。
9. the generation method of a code book is characterized in that, comprises the steps:
Determine to generate the code book desired parameters;
It is as follows to generate code book according to the parameter of determining:
Rank is 1 o'clock:
Figure FDA0000055963390000142
Or,
Rank is 2 o'clock:
Figure FDA0000055963390000143
Figure FDA0000055963390000151
Or,
Or,
Rank is 3 o'clock:
Figure FDA0000055963390000153
Figure FDA0000055963390000161
Or,
Figure FDA0000055963390000162
Or,
Figure FDA0000055963390000163
Figure FDA0000055963390000171
Or,
Rank is 4 o'clock:
Figure FDA0000055963390000172
Or,
Figure FDA0000055963390000173
Figure FDA0000055963390000181
Wherein,
Figure FDA0000055963390000182
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure FDA0000055963390000184
Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and P 1, P 2Be integer.
10. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure FDA0000055963390000186
During for the QPSK element,
Figure FDA0000055963390000187
Figure FDA0000055963390000188
Described code book is 1 o'clock at Rank,
Figure FDA0000055963390000189
P 1=P 2=2, k=0,1,2,3:
Figure FDA00000559633900001810
Or,
Described code book is 2 o'clock at Rank,
Figure FDA00000559633900001811
P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000191
Or,
Described code book is 3 o'clock at Rank,
Figure FDA0000055963390000192
P 1=P 2=8, k=0,2,4,6:
Figure FDA0000055963390000201
Or,
Figure FDA0000055963390000202
Figure FDA0000055963390000211
Or,
Described code book is 4 o'clock at Rank,
Figure FDA0000055963390000212
P 1=P 2=8, k=0,2,4,6:
Figure FDA0000055963390000213
Or
Figure FDA0000055963390000214
Figure FDA0000055963390000221
。
11. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure FDA0000055963390000222
During for the QPSK element,
Figure FDA0000055963390000223
Figure FDA0000055963390000224
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure FDA0000055963390000226
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000227
Figure FDA0000055963390000231
。
12. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000232
During for the QPSK element,
Figure FDA0000055963390000233
Figure FDA0000055963390000234
Figure FDA0000055963390000235
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure FDA0000055963390000236
Figure FDA0000055963390000241
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000242
。
13. method as claimed in claim 9 is characterized in that, works as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector, During for the QPSK element,
Figure FDA0000055963390000251
Figure FDA0000055963390000253
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000256
Figure FDA0000055963390000261
。
14. a method for sending information is characterized in that, may further comprise the steps:
Reception comprises the signal of code book index information, extracts code book index information;
According to code book index information, from the subclass of code book or code book, select corresponding pre-coding matrix, described code book is the arbitrary described code book of claim 1 to 13;
Carry out precoding according to pre-coding matrix to sent data;
Signal after the precoding is sent to receiving terminal.
15. a channel state information feedback method is characterized in that, may further comprise the steps:
The information that receiving end/sending end sends;
Based on the information estimating channel information that receives;
According to channel information, from the subclass of code book or code book, select corresponding pre-coding matrix, described code book is the arbitrary described code book of claim 1 to 13;
Transmission comprises the signal of the pairing code book index information of selected pre-coding matrix.
16. the generation equipment of a code book is characterized in that, comprising:
Determination module is used for determining to generate the code book desired parameters;
Generation module, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Figure FDA0000055963390000262
Figure FDA0000055963390000271
Or,
Rank is 2 o'clock:
Figure FDA0000055963390000272
Or,
Figure FDA0000055963390000273
Or,
Rank is 3 o'clock,
Figure FDA0000055963390000274
Figure FDA0000055963390000281
Or,
Or,
Figure FDA0000055963390000291
Or,
Rank is 4 o'clock,
Figure FDA0000055963390000292
Or,
Figure FDA0000055963390000301
Wherein,
Figure FDA0000055963390000302
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure FDA0000055963390000304
17. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure FDA0000055963390000305
During for the 16-PSK element:
Figure FDA0000055963390000306
Figure FDA0000055963390000307
Figure FDA0000055963390000308
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000309
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000311
。
18. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the 8-PSK element:
Figure FDA0000055963390000313
Figure FDA0000055963390000314
Figure FDA0000055963390000315
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000321
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000322
。
19. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector, During for the Q-PSK element:
Figure FDA0000055963390000324
Figure FDA0000055963390000325
Figure FDA0000055963390000326
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000331
Or,
Described code book is 2 o'clock at Rank, k=1:
Or,
Described code book is 3 o'clock at Rank,
Figure FDA0000055963390000333
Figure FDA0000055963390000341
Or,
Figure FDA0000055963390000342
Or,
Figure FDA0000055963390000343
Figure FDA0000055963390000351
Or,
Described code book is 4 o'clock at Rank,
Figure FDA0000055963390000352
Or,
Figure FDA0000055963390000353
。
20. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000354
During for the 16-PSK element,
Figure FDA0000055963390000361
Figure FDA0000055963390000362
Figure FDA0000055963390000363
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000364
Or,
Described code book is 2 o'clock at Rank, k=1:
。
21. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure FDA0000055963390000372
During for the 16-PSK element,
Figure FDA0000055963390000373
Figure FDA0000055963390000375
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000376
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000381
。
22. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000382
During for the QPSK element,
Figure FDA0000055963390000383
Figure FDA0000055963390000384
Figure FDA0000055963390000385
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000386
Figure FDA0000055963390000391
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000392
。
23. equipment as claimed in claim 16 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure FDA0000055963390000393
During for the QPSK element,
Figure FDA0000055963390000394
Figure FDA0000055963390000395
Figure FDA0000055963390000396
Described code book is 1 o'clock at Rank:
Figure FDA0000055963390000397
Or,
Described code book is 2 o'clock at Rank, k=1:
Figure FDA0000055963390000402
。
24. the generation equipment of a code book is characterized in that, comprising:
Determination module is used for determining to generate the code book desired parameters;
Generation module, it is as follows to be used for generating code book according to the parameter of determining:
Rank is 1 o'clock:
Figure FDA0000055963390000403
Figure FDA0000055963390000411
Or,
Rank is 2 o'clock:
Figure FDA0000055963390000412
Or,
Figure FDA0000055963390000413
Figure FDA0000055963390000421
Or,
Rank is 3 o'clock:
Figure FDA0000055963390000422
Or,
Figure FDA0000055963390000423
Figure FDA0000055963390000431
Or,
Figure FDA0000055963390000432
Or,
Rank is 4 o'clock:
Figure FDA0000055963390000433
Figure FDA0000055963390000441
Or,
Figure FDA0000055963390000442
Figure FDA0000055963390000443
Wherein,
Figure FDA0000055963390000444
i 1And i 2Be respectively first code book index and second code book index, N TThe expression number of transmit antennas, T represents vectorial transposition, I represents Complete 1 matrix of dimension, diag (v) the expression generation is the diagonal matrix of diagonal entry with the element of vectorial V, m, n, m ' and m " be integer,
Figure FDA0000055963390000446
Mod represents to get remainder, 1≤P 1≤ M, 1≤P 2≤ M, and
Figure FDA0000055963390000447
P 1, P 2Be integer.
25. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 32-DFT vector, or v mBe N T/ 2 * 1 dimension 32-DFT vector,
Figure FDA0000055963390000448
During for the QPSK element,
Figure FDA0000055963390000451
Figure FDA0000055963390000452
Described code book is 1 o'clock at Rank,
Figure FDA0000055963390000454
P 1=P 2=2, k=0,1,2,3:
Or,
Described code book is 2 o'clock at Rank,
Figure FDA0000055963390000456
P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000457
Figure FDA0000055963390000461
Or,
Described code book is 3 o'clock at Rank,
Figure FDA0000055963390000462
P 1=P 2=8, k=0,2,4,6:
Figure FDA0000055963390000463
Or,
Figure FDA0000055963390000464
Figure FDA0000055963390000471
Or,
Described code book is 4 o'clock at Rank,
Figure FDA0000055963390000472
P 1=P 2=8, k=0,2,4,6:
Figure FDA0000055963390000473
Figure FDA0000055963390000481
Or
Figure FDA0000055963390000482
。
26. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 16-DFT vector, or v mBe N T/ 2 * 1 dimension 16-DFT vector,
Figure FDA0000055963390000483
During for the QPSK element,
Figure FDA0000055963390000484
Figure FDA0000055963390000485
Figure FDA0000055963390000486
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure FDA0000055963390000487
Figure FDA0000055963390000491
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000492
。
27. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000501
During for the QPSK element,
Figure FDA0000055963390000503
Figure FDA0000055963390000504
Described code book is 1 o'clock at Rank, P 1=P 2=2, k=0,1,2,3:
Figure FDA0000055963390000505
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=2, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000506
Figure FDA0000055963390000511
。
28. equipment as claimed in claim 24 is characterized in that, generation module is further used for working as V mBe N T* 1 dimension 64-DFT vector, or v mBe N T/ 2 * 1 dimension 64-DFT vector,
Figure FDA0000055963390000512
During for the QPSK element:
Figure FDA0000055963390000513
Figure FDA0000055963390000514
Described code book is 1 o'clock at Rank, P 1=P 2=4, k=0,1,2,3:
Figure FDA0000055963390000516
Or,
Described code book is 2 o'clock at Rank, P 1=P 2=4, k=0,1,2,3, (k ', k ") ∈ { (0,1), (1,2), (0,3), (1,3) }:
Figure FDA0000055963390000521
。
29. an information transmitting apparatus is characterized in that, comprising:
Receiver module is used to receive the signal that comprises code book index information, extracts code book index information;
Select module, be used for selecting corresponding pre-coding matrix according to code book index information from code book, described code book is the arbitrary described code book of claim 1 to 13;
Precoding module is used for carrying out precoding according to pre-coding matrix to sent data;
Sending module is used for the signal after the precoding is sent to receiving terminal.
30. a channel condition information feedback device is characterized in that, comprising:
Receiver module is used for the information that receiving end/sending end sends;
Estimation module is used for based on the information estimating channel information that receives;
Select module, be used for according to channel information, select corresponding pre-coding matrix from the subclass of code book or code book, described code book is the arbitrary described code book of claim 1 to 13;
Sending module is used to send the signal that comprises the pairing code book index information of selected pre-coding matrix.
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