CN102130751B - Method, system and device for transmitting/receiving information by multi-antenna system - Google Patents
Method, system and device for transmitting/receiving information by multi-antenna system Download PDFInfo
- Publication number
- CN102130751B CN102130751B CN 201010034556 CN201010034556A CN102130751B CN 102130751 B CN102130751 B CN 102130751B CN 201010034556 CN201010034556 CN 201010034556 CN 201010034556 A CN201010034556 A CN 201010034556A CN 102130751 B CN102130751 B CN 102130751B
- Authority
- CN
- China
- Prior art keywords
- array response
- vector
- code book
- code word
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses a method for transmitting information by a multi-antenna system. The method comprises the following steps: a transmitting end receives information transmitted by a receiving end, wherein the information comprises code word label information; the transmitting end selects corresponding code words from a fitting array response structure-based codebook according to the code word label information and pre-codes data to be transmitted according to the code words; and the transmitting end transmits the pre-coded data to the receiving end. By adopting the scheme provided by the embodiment of the invention, a formed and used codebook is possibly matched with the distribution characteristic of a space relevant channel, the performance loss caused by codebook quantification is minimized, and the performance of a pre-coding system is effectively enhanced.
Description
Technical field
The present invention relates to digital communicating field, especially, the present invention relates to a kind of method, system and device of multiaerial system sending/receiving information.
Background technology
At present, the multi-antenna technology of physical layer has become one of key technology of Next-Generation Wireless Communication Systems.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 etc.
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 mimo system, if transmitter can be known channel information in some way, just can be optimized transmitted signal according to the characteristic of channel, to improve the quality of reception and reduction to the requirement of Receiver Complexity.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 for channel matrix and statistic thereof, can be also the pretreatment parameter of receiver recommendation.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 affects systematic function.At Rel-8 LTE (Long Term Evolution, Long Term Evolution) in transmission mode 4,5,6, all adopted PMI (Precoding Matrix Indicator, pre-coding matrix index) feedback mechanism, be UE (User Equipment, subscriber equipment) measure channel according to public guide frequency, and report the code word label information of its recommendation 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 Rank of transmission mode 4 for the Closed-Loop Spatial Multiplexing pattern, all exists 16 optional pre-coding matrixes.The key property of Rel-8 LTE 4 antenna codebooks comprises: 1) the Rank1 code book obtains by search under the condition of considering the compromise of non-correlation channel and correlated channels; 2) nest relation of the maintenance of the code book of other Rank and Rank1 code book; 3) codebook element all adopts the 8PSK element, to reduce computation complexity; 4) possess permanent mould and the tenth of the twelve Earthly Branches characteristic; 5) can utilize the complexity of the characteristic reduction codeword selection of Householder conversion.
In the wireless communication system that adopts the MIMO technology, for example in the Rel-10LTE-A system, may continue to use the mechanism of PMI feedback, but due to the increase of number of transmit antennas, for example may be 8, the situation of the configuration number of combinations of Rank and transmitting antenna port number under the Rel-8LTE.On the one hand, the code book for a lot of Rank and transmitting antenna port number configuration combination not yet defines.On the other hand, compare the Rel-8LTE system, become more outstanding for the necessity of spatial correlation channel design codebooks, its reason is, number of antennas constantly increases, and the base station size is limited, inevitably needs to dwindle antenna distance or/and adopt poliarizing antenna.Based on above consideration, be must obligato technology point in future broadband wireless communication systems research and standardization for linear code book and the method for designing thereof of spatial correlation channel.In addition, in view of superperformance and the advantageous characteristic of Rel-8LTE 4 antenna codebooks, the researcher considers to keep the characteristic of Rel-8LTE code book as much as possible in the code book design process.
The method of existing Householder conversion can not directly apply to the design of 8 antenna codebooks.At present, the code book that can inherit the characteristic (or part of properties) of Rel-8LTE code book mainly comprises following several:
Code book 1: in the basic enterprising line translation of Rel-8LTE code book, obtain 8 antenna Rank1 linear array code books.The defective of this code book 1 is, although code book 1 has been inherited the part of properties of Rel-8LTE 4 antenna codebooks: and constant modulus property and employing 8PSK element, do not satisfy nest relation.Because code book 1 is based on Rel-8LTE
The expansion of 4 antenna codebooks, and Rel-8LTE 4 antenna codebooks consider and obtain under space correlation and space non-correlation channel optimization, its part code word is not suitable for spatial correlation channel, causes code book 1 existence loss of energy under little spacing linear array.
Code book 2: utilize complex Hadamard transform to construct 4
7Individual is 8 * 8 complex matrix of element with 8PSK (Phase Shift Keying, phase shift keying) element, and the method search of then optimizing by non-correlation channel and correlated channels compromise obtains the Rank1 code book.The defective of this code book 2 is, although code book 2 has been inherited most of characteristic of Rel-8LTE code book: permanent mould, the tenth of the twelve Earthly Branches, Nested property, it adopts the 8PSK element.Due to code book 24
7Search code book in the space that individual 8 * 8 complex matrix take the 8PSK element as element consist of, and search criteria is the compromise of performance under consideration space correlation and space non-correlation channel, thus make the hydraulic performance decline of code book 2 under spatial correlation channel.
Code book 3: multiply by 8-DFT (Discrete Fourier Transform, discrete Fourier transform) matrix with 16 different diagonal matrixs and obtain the code book of Rank8, and the code book of Rank1 by these 16 8 * 8 complex matrix the 1st row form.The defective of this code book 3 is, although code book 3 has been inherited the part of properties of Rel-8LTE code book: permanent mould, the tenth of the twelve Earthly Branches, Nested property, adopted the 16PSK element, therefore can increase the complexity that precoding is calculated.If can not obtain significant performance gain than other code books, the complexity that the precoding that increases is calculated will become extra burden.
Code book 4: each row (or row) by 1 8DFT matrix and 18 * 8 unitary matrice consists of.The defective of this code book 4 is, although code book 4 has been inherited the part of properties of Rel-8LTE code book: permanent mould, the tenth of the twelve Earthly Branches, Nested property, it adopts the 8PSK element.Simultaneously, due to the structure of DFT matrix coincidence array response, code book 3 and code book 4 all are suitable for the precoding MIMO system under spatial correlation channel.But no matter which kind of distribution character channel possesses, and in code book 3 and code book 4, the angle of the corresponding array response of each code word is constant, may cause the performance loss of precoding MIMO system under special scenes.
Therefore, being necessary to propose a kind of effective code book designs and uses this code book to carry out the scheme of information sending and receiving.
Summary of the invention
The purpose of the embodiment of the present invention is intended to solve at least one of above-mentioned technological deficiency, passes through especially design and use based on the code book of match array response structure, and the method for sending information that uses this code book
In order to achieve the above object, embodiments of the invention have proposed a kind of method that multiaerial system sends information on the one hand, comprise the following steps: transmitting terminal receives the information that receiving terminal sends, and described information comprises the code word label information; Described transmitting terminal is selected corresponding code word according to described code word label information from the code book based on match array response structure, described transmitting terminal carries out precoding according to described code word to sent data; The data of described transmitting terminal after with precoding send to described receiving terminal.
Further aspect of the present invention has also proposed a kind of method that multiaerial system receives information, comprises the following steps: the information that the receiving terminal receiving end/sending end sends, and according to described information measurement channel; Described receiving terminal is selected corresponding code word according to channel information from the code book based on match array response structure; Described receiving terminal sends to described transmitting terminal with the label information of described code word.
Further aspect of the present invention has also proposed the system that a kind of multiaerial system sends information, comprise transmitting terminal and receiving terminal, described transmitting terminal, be used for sending information to described receiving terminal, and receive the code word label information of described receiving terminal feedback, and select corresponding code word according to described code word label information from the code book based on match array response structure, and carry out precoding according to described code word to sent data, the data after precoding are sent to described receiving terminal; Described receiving terminal, be used for receiving the information that described transmitting terminal sends, and according to described information measurement channel, and according to channel information, select corresponding code word from the code book based on match array response structure, and the label information of described code word is fed back to described transmitting terminal.
Further aspect of the present invention has also proposed a kind of transmitting terminal, comprises receiver module, precoding module and sending module, and described receiver module is used for receiving the information that receiving terminal sends, and described information comprises the code word label information; Described precoding module is used for according to described code word label information from selecting corresponding code word based on the code book of match array response structure, and carries out precoding according to described code word to sent data; Described sending module is used for the data after precoding are sent to described receiving terminal.
Further aspect of the present invention has also proposed a kind of receiving terminal, comprises receiver module, selects module and sending module, and described receiver module is used for the information that receiving end/sending end sends, and according to described information measurement channel; Described selection module is used for according to channel information, selects corresponding code word from the code book based on match array response structure; Described sending module is used for the label information of described code word is sent to described transmitting terminal.
The present invention has also proposed a kind of method for generating codebooks based on match array response structure on the other hand, comprises the following steps: based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector; The described vector set of match is to obtain described code book in the complex vector set that the vector take finite element as element consists of.
The such scheme that the embodiment of the present invention proposes, the code book of formation and use is matched with as much as possible the distribution character of spatial correlation channel, minimizes the performance loss that codebook quantification brings, thereby effectively improves the performance of pre-coding system.In addition, the scheme of the code book of the generation that the embodiment of the present invention proposes is inherited most of characteristic of Rel-8LTE 4 antenna codebooks, and is functional, very little to the change of existing system, can not affect the compatibility of system, and realizes simple, efficient.
The aspect that the present invention adds and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Fig. 1 is the flow chart of a kind of multiaerial system sending method of the embodiment of the present invention;
Fig. 2 is the flow chart of a kind of multiaerial system method of reseptance of the embodiment of the present invention;
Fig. 3 is the overall process flow chart that the utilization of the embodiment of the present invention transmits and receive data based on the code book of match array response structure;
Fig. 4 is that the embodiment of the present invention is based on the flow chart of the generation method of the code book of match array response structure;
Fig. 5 is the structural representation of embodiment of the present invention transmitting terminal;
Fig. 6 is the structural representation of embodiment of the present invention receiving terminal.
Embodiment
The below describes embodiments of the invention in detail, and the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
As shown in Figure 1, the flow chart for a kind of multiaerial system sending method of the embodiment of the present invention comprises the following steps:
S101: transmitting terminal receives the information that receiving terminal sends, comprising the code word label information.
In step S101, transmitting terminal receives the information that receiving terminal sends, and information comprises the code word label information.Particularly, in order to understand channel conditions, transmitting terminal receives the information such as CQI (Channel Quality Indicator, channel quality indication), Rank selection and codeword selection that the remote receiver feedback is come.These CQI, Rank select and precoding selection information will be for follow-up transmission and processing process.
S102: transmitting terminal is selected corresponding code word from the code book based on match array response structure, carry out precoding to sent data.
In step S102, transmitting terminal is selected corresponding code word according to described code word label information from the code book based on match array response structure, transmitting terminal carries out precoding according to the code word of selecting to sent data, or, further process obtaining after pre-coding matrix, data to be sent being carried out precoding processing according to described code word, as to as described in code word carry out ZF processing etc.
Particularly, transmitting terminal is used a plurality of data flow to be sent the MCS (Modulation Coding Scheme, Modulation and Coding Scheme) that chooses and is carried out corresponding Data Stream Processing.MCS is based on that the channel quality of transmitting terminal and receiving terminal selects, and this channel quality is indicated in the mode of CQI by receiving terminal.According to codeword selection information, select code word in the code book based on match array response structure, wherein, will provide in the back detailed description based on the code book of match array response structure.Each data flow will be mapped to some layers to realize needed transmission rate.Then, based on selected pre-encoding codeword, the data after layer mapping are carried out precoding, that is, precoder will be from the vector block x=[x of layer mapping
(0)X
(υ-1)]
TAs input, produce the vector block on the resource that is mapped to each antenna port: y=[... y
(p)]
T, wherein υ represents the signal number of plies, y
(p)Signal on expression antenna port p.At last, the data flow after each precoding is launched through too much transmit antennas through OFDM (OrthogonalFrequency Division Multiplexing, OFDM) modulation, and wherein, number of data layers is also referred to as the Rank number.
Particularly, in one embodiment of the invention, based on the code book of match array response structure, there is a NT * 1 dimension array response vector a, makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element (as the 8PSK element set etc.) set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b.
Further, in another embodiment, structure can generate by following steps based on the code book of match array response structure: at first, based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector, be designated as
In the vectorial number that comprises equal M,
The dimension that comprises vector in set is N
T* 1.Because the main characteristic vector of spatial correlation channel can be come approximate representation with the form of array response, and the corresponding angle of its array response presents the feature of random distribution in the certain angle scope, therefore can do one to this angular range according to certain optimization principles and reasonably divide (as this angular range being carried out evenly division etc.), can form described vector set corresponding to the vector of this group angular divisions
Then, thereby the described vector set of match set obtains code book in the set that the vector take finite element as element consists of, and particularly, can construct all N take finite element (as the 8PSK element etc.) as element
TThe complex vector set that * 1 dimensional vector consists of is designated as B.Right
In set each vector respectively search set close in B the minimum vector of distance with it.The vectorial Special composition correlated channels Rank1 code book that these search obtain.This process is called match set in the set B that the vector that finite element is element consists of
In addition, in other embodiments of the invention, comprise also that based on the code book of match array response structure the part code word possesses the code book of match array response structure.
S103: the data of transmitting terminal after with precoding send to receiving terminal.
In step S103, the data after precoding are sent to receiving terminal.By the way, completed the method for the multiaerial system transmission information of the present invention's proposition.
As shown in Figure 2, the flow chart for a kind of multiaerial system message receiving method of the embodiment of the present invention comprises the following steps:
S201: the information that the receiving terminal receiving end/sending end sends.
In step S201, the information that the receiving terminal receiving end/sending end sends, and according to described information measurement channel, for example measure channel according to public guide frequency.
S202: receiving terminal is selected corresponding code word according to channel information from the code book based on match array response structure.
In step S202, receiving terminal is selected corresponding code word according to channel information from the code book based on match array response structure.
Particularly, take the mimo system of OFDM modulation as example, in receiving course, the signal that the receiving terminal receiving end/sending end is sent and utilize FFT (Fast Fourier Transform, fast Fourier transform) to be translated into frequency-region signal.These signals are divided into the signal of some layers after detecting through MIMO.After separating layer mapping, signal is demodulated, deinterleaving and decoding further.The pilot signal that receives is transfused to the channel estimation module device to realize channel estimating.Receiving terminal utilizes channel estimating information from based on selecting code word with Optimal performance the code book of match array response structure.Its Optimality Criteria can be FER (Frame Error Rate, frame error rate), BER (Bit Error Rate, bit error rate), SINR (Signal to Interference plus Noise Ratio, Signal to Interference plus Noise Ratio), mutual information, instantaneous throughput or other suitable criterions.The index that receiving terminal produces selected code word sends for use in follow-up transmitter.Receiving terminal produces channel quality indicator (CQI) to inform the transmitter channel quality.Receiving terminal also is used for determining Rank number and corresponding number of data layers, to be used for follow-up transfer of data.All parameters of above acquisition, code word label, CQI and Rank number all feed back to transmitting terminal.
Particularly, in one embodiment of the invention, based on the code book of match array response structure, there is a N
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element (as the 8PSK element set etc.) set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b.
Further, in another embodiment, structure can generate by following steps based on the code book of match array response structure: at first, based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector, be designated as
In the vectorial number that comprises equal M,
The dimension that comprises vector in set is N
T* 1.Because the main characteristic vector of spatial correlation channel can be come approximate representation with the form of array response, and the corresponding angle of its array response presents the feature of random distribution in the certain angle scope, therefore can do one to this angular range according to certain optimization principles and reasonably divide (as this angular range being carried out evenly division etc.), can form described vector set corresponding to the vector of this group angular divisions
Then, thereby the described vector set of match set obtains code book in the set that the vector take finite element as element consists of, and particularly, can construct all N take finite element (as the 8PSK element etc.) as element
TThe complex vector set that * 1 dimensional vector consists of is designated as B.Right
In set each vector respectively search set close in B the minimum vector of distance with it.The vectorial Special composition correlated channels Rank1 code book that these search obtain.This process is called match set in the set B that the vector that finite element is element consists of
In addition, in other embodiments of the invention, comprise also that based on the code book of match array response structure the part code word possesses the code book of match array response structure.
S203: receiving terminal sends to transmitting terminal with the code word label information.
In step S203, receiving terminal sends to transmitting terminal with above-mentioned code word label information.By the way, completed the method for the multiaerial system reception information of the present invention's proposition.
Be example with the MU-MIMO (Multiple-User MIMO, multiuser MIMO) that adopts ZF to process in LTE, the overall process that utilization transmits and receive data based on the code book of match array response structure is described, as shown in Figure 3.Each user of hypothesis can only receive a data flow at present, supposes that BS (Base-Station, base station) has N
TThe root antenna, UE has N
RThe root antenna.The pre-designed code book based on match array response structure that is stored in BS and UE is C={c
1, c
2C
B, wherein B represents the size of code book, each c
iBe N
T* 1 vector.Its realization flow is as follows:
Step S301, UE utilize public guide frequency to measure down channel H, are N
R* N
TMatrix.
Step S302, UE calculates correlation matrix: R=E[H
HH]
Step S303, UE carries out Eigenvalues Decomposition to matrix R: R=V Λ V
H, wherein V is an orthogonal matrix, is the characteristic value characteristic of correspondence vector of matrix R.Matrix Λ=diag{ λ
1, λ
2λ
r, r=min (N
T, N
R) be a diagonal matrix, each diagonal element represents the characteristic value of R.
Step S304, UE extract eigenvalue of maximum characteristic of correspondence vector v:
V=V (index); The index row of matrix V are extracted in operator V (index) expression, and v is N
T* 1 vector.
Step S305, select corresponding codewords from code book:
Step S306, UE is to BS feedback PMI and the corresponding CQI of this PMI.
Step S307, the PMI that BS reports according to each UE, CQI carry out the MU-MIMO user grouping.
Step S308, BS select the highest user's group of priority
Step S309, BS form this user and organize G
UserThe MU-MIMO weight vectors: at first form matrix
Then, process the formation precoding vectors through ZF
Step S310, BS utilize precoding vectors W to carry out downlink.
As one embodiment of the present of invention, as shown in Figure 4, be the flow chart of the embodiment of the present invention based on the generation method of the code book of match array response structure, comprise the following steps:
S401: the vector set of constructing one group of coincidence array response structure and dividing according to channel master characteristic vector
And construct a complex vector set B take finite element as element.
Particularly, the array response structure depends on the antenna array configuration of employing, as even linear array, double polarized antenna and circle battle array etc.To comprise N
TThe even linear array of individual antenna is example, and antenna distance is d, and the wavelength of the electromagnetic band that uses is about λ, and the corresponding angle of array response institute is α, and array response can be expressed as following formula:
The main characteristic vector of spatial correlation channel can be come approximate representation with the form of array response, and wherein the main characteristic vector of spatial correlation channel refers to channel matrix is carried out the corresponding characteristic vector of singular value maximum after singular value decomposition.And the corresponding angle of its array response is in the feature of the existing random distribution of certain angle scope internal layer.As in 3 sector cells, user distribution with respect to-60 ° of base station in the scope of 60 °.Correspondingly, the angle of main characteristic vector institute respective array response also mainly is distributed in this angular range.Can do one to this angular range according to certain optimization principles and reasonably divide (as this angular range being carried out evenly division etc.).
[α
L, α
H] angular range that quantizes of expression expectation, { α
0..., α
M-1Be [α
L, α
H] M interior quantification angle of scope.α
m, m=1 ..., the corresponding array response vector of M institute is a
m, under at even linear array,
This M array response vector consists of set
In order to save operand, in code book, the element of code word is usually taken from the finite element set, as QPSK (Quadrature Phase Shift Keying, quarternary phase-shift keying (QPSK)), 8PSK etc.Here generate a complex vector set B take finite element as element, its dimension is N
T* 1.Take the QPSK element set as example because have 4 8PSK elements 1 ,-1, j, so-j} is N
TEach element in * 1 vector can be 1 ,-1, j, in-j} one comprises in the complex vector set B altogether
Individual vector element, wherein
S402: right
In each vector respectively search set close in B the minimum vector of distance with it, the vector that these search obtain has consisted of the code book of spatial correlation channel Rank 1.
In step S402, right
In set each vector respectively search set close in B the minimum vector of distance with it, these vectors consist of set C={c
0..., c
M-1, resulting vector set C is the code book of spatial correlation channel Rank 1.
Particularly, right
In set each vector find out respectively in set B with
The minimum vector of distance, these vectors consist of set C={c
0..., c
M-1, C={c
0..., c
M-1Be designated as needed code book.For example, for
In certain vectorial a
m, looking for it in set B, the concrete methods of realizing of the vector of distance minimum can be expressed as
Wherein, B is the N that element is taken from a certain finite element (as the 8PSK element set etc.) set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b.It should be noted that to adjust the distance according to different Optimality Criterias defines accordingly, as normal form distance, string distance etc.Different distance definitions can obtain different code books.
The below provides the example of spatial correlation channel code book:
Quantizing angle is: { α
m| α
m=-60 °+(m-1) * 7.5 °, m=1 ..., 16}
The array response structure that adopts is even linear array, that is:
Selected finite element set is the 8PSK element set, is
The distance definition that uses is D (a, b)=1-|b
HA|, wherein b
HThe conjugate transpose of expression b, | x| represents plural x delivery.
Resulting 8 antenna Rank1 code books are:
The invention allows for the system that a kind of multiaerial system sends information, comprise transmitting terminal and receiving terminal.Transmitting terminal is used for sending information to receiving terminal, and the code word label information of reception receiving terminal feedback, and select corresponding code word according to the code word label information from the code book based on match array response structure, and carry out precoding according to code word to sent data, the data after precoding are sent to receiving terminal.Receiving terminal is used for the information that receiving end/sending end sends, and according to this information measurement channel, and according to channel information, select corresponding code word from the code book based on match array response structure, and the label information of code word is fed back to transmitting terminal.Wherein,, do not repeat them here as shown in above-mentioned embodiment based on the generation of the code book of match array response structure.
As shown in Figure 5, be the structural representation of embodiment of the present invention transmitting terminal 100, comprise receiver module 110, precoding module 120 and sending module 130.Receiver module 110 is used for receiving the information that receiving terminal sends, and information comprises the code word label information.Precoding module 120 is used for according to the code word label information from selecting corresponding code word based on the code book of match array response structure, and carry out precoding according to code word to sent data, or, further process obtaining after pre-coding matrix, data to be sent being carried out precoding processing according to described code word, as to as described in code word carry out ZF processing etc.Sending module 130 is used for the data after precoding are sent to receiving terminal.
As shown in Figure 6, be the structural representation of embodiment of the present invention receiving terminal 200, comprise receiver module 210, select module 220 and sending module 230.Receiver module 210 is used for the information that receiving end/sending end sends, and according to the information measurement channel.Select module 220 to be used for according to channel information, select corresponding code word from the code book based on match array response structure.Sending module 230 is used for the label information of code word is sent to transmitting terminal.
The such scheme that the embodiment of the present invention proposes, the code book of formation and use is matched with as much as possible the distribution character of spatial correlation channel, minimizes the performance loss that codebook quantification brings, thereby effectively improves the performance of pre-coding system.In addition, the method for the code book of the use of the present invention's proposition is inherited Rel-8LTE
Most of characteristic of 4 antenna codebooks, functional, very little to the change of existing system, can not affect the compatibility of system, and realize simple, efficient.
One of ordinary skill in the art will appreciate that and realize that all or part of step that above-described embodiment method is carried is to come the relevant hardware of instruction to complete by program, described program can be stored in a kind of computer-readable recording medium, this program comprises step of embodiment of the method one or a combination set of when carrying out.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, can be also that the independent physics of unit exists, and also can be integrated in a module two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, also can adopt the form of software function module to realize.If described integrated module realizes with the form of software function module and during as independently production marketing or use, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
The above is only the preferred embodiment of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (12)
1. the method for a multiaerial system transmission information, is characterized in that, comprises the following steps:
Transmitting terminal receives the information that receiving terminal sends, and described information comprises the code word label information;
Described transmitting terminal is selected corresponding code word according to described code word label information from the code book based on match array response structure, described transmitting terminal carries out precoding according to described code word to sent data;
The data of described transmitting terminal after with precoding send to described receiving terminal;
Wherein, there is a N in described code book based on match array response structure
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b;
Wherein, described code book based on match array response structure generates by following steps:
Based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector;
The described vector set of match is to obtain described code book in the complex vector set that the vector take finite element as element consists of.
2. multiaerial system as claimed in claim 1 sends the method for information, it is characterized in that, described possess match array response structure based on part code word in the code book of match array response structure.
3. the method for a multiaerial system reception information, is characterized in that, comprises the following steps:
The information that the receiving terminal receiving end/sending end sends, and according to described information measurement channel;
Described receiving terminal is selected corresponding code word according to channel information from the code book based on match array response structure;
Described receiving terminal sends to described transmitting terminal with the label information of described code word;
Wherein, there is a N in described code book based on match array response structure
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b;
Wherein, described code book based on match array response structure generates by following steps:
Based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector;
The described vector set of match is to obtain described code book in the complex vector set that the vector take finite element as element consists of.
4. multiaerial system as claimed in claim 3 receives the method for information, it is characterized in that, described possess match array response structure based on part code word in the code book of match array response structure.
5. the system of a multiaerial system transmission information, is characterized in that, comprises transmitting terminal and receiving terminal,
Described transmitting terminal, be used for sending information to described receiving terminal, and receive the code word label information of described receiving terminal feedback, and select corresponding code word according to described code word label information from the code book based on match array response structure, and carry out precoding according to described code word to sent data, the data after precoding are sent to described receiving terminal;
Described receiving terminal, be used for receiving the information that described transmitting terminal sends, and according to described information measurement channel, and according to channel information, select corresponding code word from the code book based on match array response structure, and the label information of described code word is fed back to described transmitting terminal;
Wherein, there is a N in described code book based on match array response structure
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b;
Wherein, described code book based on match array response structure generates by following steps:
Based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector;
The described vector set of match is to obtain described code book in the complex vector set that the vector take finite element as element consists of.
6. multiaerial system as claimed in claim 5 sends the system of information, it is characterized in that, described possess match array response structure based on part code word in the code book of match array response structure.
7. a transmitting terminal, is characterized in that, comprises receiver module, precoding module and sending module,
Described receiver module is used for receiving the information that receiving terminal sends, and described information comprises the code word label information;
Described precoding module is used for according to described code word label information from selecting corresponding code word based on the code book of match array response structure, and carries out precoding according to described code word to sent data;
Described sending module is used for the data after precoding are sent to described receiving terminal;
Wherein, there is a N in described code book based on match array response structure
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b;
Wherein, described code book based on match array response structure generates by following steps:
Based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector;
The described vector set of match is to obtain described code book in the complex vector set that the vector take finite element as element consists of.
8. transmitting terminal as claimed in claim 7, is characterized in that, described possess match array response structure based on part code word in the code book of match array response structure.
9. a receiving terminal, is characterized in that, comprise receiver module, select module and sending module,
Described receiver module is used for the information that receiving end/sending end sends, and according to described information measurement channel;
Described selection module is used for according to channel information, selects corresponding code word from the code book based on match array response structure;
Described sending module is used for the label information of described code word is sent to described transmitting terminal;
Wherein, there is a N in described code book based on match array response structure
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b;
Wherein, described code book based on match array response structure generates by following steps:
Based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector;
The described vector set of match is to obtain described code book in the complex vector set that the vector take finite element as element consists of.
10. receiving terminal as claimed in claim 9, is characterized in that, described possess match array response structure based on part code word in the code book of match array response structure.
11. the method for generating codebooks based on match array response structure is characterized in that, comprises the following steps:
Based on one group of coincidence array response structure of distribution character structure of spatial correlation channel and the vector set of the main distribution space of classifying rationally channel master's characteristic vector;
The described vector set of match in the complex vector set that the vector take finite element as element consists of, to obtain described code book based on match array response structure, wherein: there is a N in described code book based on match array response structure
T* 1 dimension array response vector a makes its code word c satisfy:
Wherein, B is the N that element is taken from a certain finite element set
TThe set that * 1 dimensional vector consists of, b is a certain N in set B
T* 1 dimensional vector, the distance between D (a, b) the vectorial a of expression and vectorial b.
12. the method for generating codebooks based on match array response structure as claimed in claim 11 is characterized in that, described possess match array response structure based on part code word in the code book of match array response structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010034556 CN102130751B (en) | 2010-01-20 | 2010-01-20 | Method, system and device for transmitting/receiving information by multi-antenna system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010034556 CN102130751B (en) | 2010-01-20 | 2010-01-20 | Method, system and device for transmitting/receiving information by multi-antenna system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102130751A CN102130751A (en) | 2011-07-20 |
| CN102130751B true CN102130751B (en) | 2013-06-12 |
Family
ID=44268652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010034556 Active CN102130751B (en) | 2010-01-20 | 2010-01-20 | Method, system and device for transmitting/receiving information by multi-antenna system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102130751B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101291165A (en) * | 2007-04-17 | 2008-10-22 | 大唐移动通信设备有限公司 | Sequence detecting method and apparatus for multi-antenna system |
| WO2008133582A2 (en) * | 2007-04-30 | 2008-11-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement for adapting a multi-antenna transmission |
| CN101330479A (en) * | 2007-06-20 | 2008-12-24 | 中兴通讯股份有限公司 | Method for pre-encoding multi-input multi-output transmission and codebook encoding |
| CN101340219A (en) * | 2007-07-04 | 2009-01-07 | 华为技术有限公司 | Channel status information feeding back method and wireless transmitting/receiving device |
| CN101425830A (en) * | 2007-11-01 | 2009-05-06 | 鼎桥通信技术有限公司 | Pre-encoding codeword determining method, system and apparatus |
| CN101626266A (en) * | 2009-07-27 | 2010-01-13 | 北京天碁科技有限公司 | Method and device for estimating rank indication and precoding matrix indication in precoding system |
-
2010
- 2010-01-20 CN CN 201010034556 patent/CN102130751B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101291165A (en) * | 2007-04-17 | 2008-10-22 | 大唐移动通信设备有限公司 | Sequence detecting method and apparatus for multi-antenna system |
| WO2008133582A2 (en) * | 2007-04-30 | 2008-11-06 | Telefonaktiebolaget L M Ericsson (Publ) | Method and arrangement for adapting a multi-antenna transmission |
| CN101330479A (en) * | 2007-06-20 | 2008-12-24 | 中兴通讯股份有限公司 | Method for pre-encoding multi-input multi-output transmission and codebook encoding |
| CN101340219A (en) * | 2007-07-04 | 2009-01-07 | 华为技术有限公司 | Channel status information feeding back method and wireless transmitting/receiving device |
| CN101425830A (en) * | 2007-11-01 | 2009-05-06 | 鼎桥通信技术有限公司 | Pre-encoding codeword determining method, system and apparatus |
| CN101626266A (en) * | 2009-07-27 | 2010-01-13 | 北京天碁科技有限公司 | Method and device for estimating rank indication and precoding matrix indication in precoding system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102130751A (en) | 2011-07-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102088340B (en) | Method and device of multi-aerial system for transmitting and receiving information | |
| CN102130752B (en) | Methods and devices for acquiring pre-coding matrix indicator and pre-coding matrix | |
| CN102823153B (en) | precoder structure for MIMO precoding | |
| KR101317136B1 (en) | Method and system for precoding and method for constructing precoding codebook | |
| CN102725967B (en) | For the method and apparatus of information feed back and precoding | |
| EP3272022A1 (en) | Methods and devices for determining precoder parameters in a wireless communication network | |
| CN101682475B (en) | Method and apparatus for controlling multi-antenna transmission in a wireless communication network | |
| CN101136718A (en) | Multi-input multi-output space multiplexing precoding method of wireless communication system | |
| CN102315872B (en) | Transmission method of non-codebook pre-coding in long term evolution-advanced (LTE-A) system | |
| TW201042940A (en) | A method for communicating in a MIMO network | |
| CN102088302B (en) | The method of closed-loop multi-antenna system sending/receiving information and device | |
| CN102082635B (en) | Codebook storage and information transceiving method and device using codebook | |
| CN104113399A (en) | Multi-user user selection method based on matrix condition number in multiple input multiple output (MIMO) system | |
| CN102122980A (en) | Information transmitting method and equipment for multiaerial system | |
| CN101645757A (en) | Method and device for selecting precoding matrix | |
| CN102130751B (en) | Method, system and device for transmitting/receiving information by multi-antenna system | |
| CN102082593A (en) | Codebook storage and information transceiving method and device using codebook | |
| CN101826946B (en) | Method for preprocessing information in multi-input multi-output system | |
| WO2008152540A2 (en) | Method and apparatus for antenna selection in a multi-antenna system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210611 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 No. 40, Haidian District, Beijing, Xueyuan Road Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |