CN101997649B - Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity - Google Patents

Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity Download PDF

Info

Publication number
CN101997649B
CN101997649B CN200910091472.1A CN200910091472A CN101997649B CN 101997649 B CN101997649 B CN 101997649B CN 200910091472 A CN200910091472 A CN 200910091472A CN 101997649 B CN101997649 B CN 101997649B
Authority
CN
China
Prior art keywords
user
matrix
coding
space
precoding
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
Application number
CN200910091472.1A
Other languages
Chinese (zh)
Other versions
CN101997649A (en
Inventor
郭森宝
姜静
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Medical Device Industry Development Group Co ltd
Original Assignee
ZTE Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ZTE Corp filed Critical ZTE Corp
Priority to CN200910091472.1A priority Critical patent/CN101997649B/en
Priority to PCT/CN2010/073408 priority patent/WO2011020359A1/en
Publication of CN101997649A publication Critical patent/CN101997649A/en
Application granted granted Critical
Publication of CN101997649B publication Critical patent/CN101997649B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H04B7/0452—Multi-user MIMO systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method for processing multiuser multiple-input multiple-output (MU-MIMO) based on orthogonal diversity, which comprises the steps of: precoding data flows of different users by independent delamination and specific orthogonal diversity, and mapping the data in a space-frequency coded matrix; carrying out multiuser precoding or beam forming (BF) processing on data of different users in the space-frequency coded matrix; and transmitting the processed data subjected to resource mapping outside through a transmitting antenna. The invention also discloses a device for processing MU-MIMO based on orthogonal diversity. By using the method and the device, the processing of multiuser transmitting diversity is realized, the resources of the antenna and carrier waves are fully used, and more users can be multiplexed under the same resource consumption.

Description

A kind of MU-MIMO processing method and device based on orthogonal set
Technical field
The present invention relates to Long Term Evolution (LTE, Long Term Evolution) transmit diversity techniques in system, relate in particular to a kind of multi-user's multiple-input and multiple-output (MU-MIMO, Multiple UserMultiple Input Multiple Output) processing method and device based on orthogonal set.
Background technology
In LTE system, the descending diversity mode having defined when transmitting antenna is 2 antenna is space-frequency coding (SFBC, Space-Frequency Block Codes), and encoder matrix is shown below:
In above formula, the tranmitting frequency corresponding to each row of matrix, the transmitting antenna corresponding to each row of matrix; S 1represent that first is mapped to the data of subcarrier (Subcarrier) 1, S constantly 2represent that second is mapped to the data of Subcarrier 2, S constantly 1 *and S 2 *represent respectively S 1and S 2conjugation.
Diversity mode when transmitting antenna is 4 antenna is SFBC+ frequency switched diversity (FSTD, FrequencySwitching Transmit Diversity), and encoder matrix is shown below:
In above formula, the tranmitting frequency corresponding to each row of matrix, the transmitting antenna corresponding to each row of matrix; S 1represent that first is mapped to the data of Subcarrier 1, S constantly 2represent that second is mapped to the data of Subcarrier 2, S constantly 3represent that the 3rd is mapped to the data of Subcarrier 3, S constantly 4represent that the 4th is mapped to the data of Subcarrier 4, S constantly 1 *, S 2 *, S 3 *and S 4 *represent respectively S 1, S 2, S 3and S 4conjugation.
In the existing version of LTE, 4 antennas do not make full use of antenna and carrier resource while sending, and have only adopted the emission diversity scheme at alone family, do not relate to multi-user orthogonal diversity multiplexing, thereby have limited the performance of LTE.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of MU-MIMO processing method and device based on orthogonal set, to realize multi-user's transmit diversity, processes.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of multi-user's multiple-input and multiple-output MU-MIMO processing method based on orthogonal set, the method comprises:
The data flow of different user, by independently layering and specific orthogonal set precoding, is mapped in the matrix of space-frequency coding;
The data of different user in described space-frequency coding matrix are carried out respectively to multi-user pre-coding or beam forming BF processing, and the data after processing are outwards launched by transmitting antenna after resource mapping.
The method further comprises: when number of transmit antennas is more than or equal to 8, the matrix of described specific orthogonal set precoding is:
S 11 S 23 - S 12 * - S 24 * S 12 S 24 S 11 * S 23 * S 21 S 13 - S 22 * - S 14 * S 22 S 14 S 21 * S 13 *
Wherein, S 1irepresent the data that user 1 sends, S 2irepresent the data that user 2 sends, i=1,2,3,4;
User 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix.
The method further comprises: when number of transmit antennas is more than or equal to 8, the matrix of described specific orthogonal set precoding is:
S 11 S 12 S 23 S 24 - S 12 * S 11 * - S 24 * S 23 * S 21 S 22 S 13 S 14 - S 22 * S 21 * - S 14 * S 13 *
Wherein, S 1irepresent the data that user 1 sends, S 2irepresent the data that user 2 sends, i=1,2,3,4;
User 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix.
The method further comprises: when number of transmit antennas is more than or equal to 8, the matrix of described specific orthogonal set precoding is:
S 11 S 12 - S 13 * - S 14 * - S 1 2 * S 11 * S 14 - S 13 S 13 S 1 4 S 11 * S 12 * - S 14 * S 13 * - S 12 S 11 , S 21 S 22 - S 23 * - S 24 * - S 22 * S 21 * S 24 - S 23 S 23 S 24 S 21 * S 22 * - S 24 * S 23 * - S 22 S 21
Wherein, S 1irepresent the data that user 1 sends, S 2irepresent the data that user 2 sends, i=1,2,3,4;
User 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by the diversity pre-coding matrix identical with user 1.
Described multi-user pre-coding or BF process, and are specially:
The data of the different user in the matrix of described space-frequency coding are multiplied by respectively to different precoding vectors, or are multiplied by different B F vector.
The present invention also provides a kind of MU-MIMO processing unit based on orthogonal set, and this device comprises:
Orthogonal set precoding module, for to the data flow of different user by layering and specific orthogonal set precoding, be mapped in the matrix of space-frequency coding;
Multi-user pre-coding module, processes for the data of the different user of the matrix of described space-frequency coding being carried out respectively to multi-user pre-coding or BF;
Transmitter module, for by the data after described multi-user pre-coding resume module through the backward outer transmitting of resource mapping.
When number of transmit antennas is more than or equal to 8, described orthogonal set precoding module is further used for, user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix.
When number of transmit antennas is more than or equal to 8, described orthogonal set precoding module is further used for, user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by the diversity pre-coding matrix identical with user 1.
Described multi-user pre-coding module is further used for, and the data of the different user in the matrix of described space-frequency coding are multiplied by respectively to different precoding vectors, or is multiplied by different B F vector.
A kind of MU-MIMO processing method and device based on orthogonal set provided by the present invention,, is mapped in the matrix of space-frequency coding by independently layering and specific orthogonal set precoding the data flow of different user; Then the data of different user are carried out respectively to multi-user pre-coding or beam forming (BF) and process, and by the data after processing through the backward outer transmitting of resource mapping.The present invention is multiplexing by multi-user's orthogonal set, takes full advantage of the resource of antenna and carrier wave, multiplexing more user under identical resource consumption; In the situation that do not increase extra pilot-frequency expense, can obtain good performance gain; Utilize precoding and BF technology to eliminate the interference between multi-user, and increased diversity gain for alone family.
Accompanying drawing explanation
Fig. 1 is the flow chart of a kind of MU-MIMO processing method based on orthogonal set of the present invention;
Fig. 2 is the schematic diagram that in the embodiment of the present invention, the MU-MIMO based on orthogonal set processes;
Fig. 3 is the composition structural representation of a kind of MU-MIMO processing unit based on orthogonal set of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
A kind of MU-MIMO processing method based on orthogonal set provided by the present invention, as shown in Figure 1, mainly comprises the following steps:
Step 101, base station, is mapped in the matrix of space-frequency coding by independently layering and specific orthogonal set precoding the data flow of different user.
Step 102, carries out respectively multi-user pre-coding or beam forming (BF, Beamforming) processing to the data of the different user in the matrix of space-frequency coding.
Concrete, the data of the different user in the matrix of space-frequency coding are multiplied by respectively to different precoding vectors, or are multiplied by different B F vector.And precoding vectors or BF vector can be according to the interchangeability of up-downgoing interchannel, or according to up channel, the information feedback of down channel is calculated.
Step 103 is outwards launched the data after processing by transmitting antenna after resource mapping.
By theory analysis and simulating, verifying, all proved that diversity output signal is sent into respectively to independently wave beam forms array at present, certain is put forward (Alamouti) diversity and compares the gain that can obtain 6dB with Ah coming, and wherein the encoder matrix of Alamouti diversity is S 1 S 2 - S 2 * S 1 * , S1 and S2 are the symbol before encoding, the corresponding adjacent moment of row or side frequency after encoding by Alamouti, and row represent different transmitting antennas.In addition, under SFBC, utilize precoding technique can eliminate the interference between multi-user, and can be by selecting best precoding vectors that diversity performance is further strengthened.Therefore the present invention forms and transmit diversity in conjunction with precoding wave beam, the multi-user diversity method of design LTE-Advanced system.
Wherein, transmitting antenna is that the corresponding relation in the deversity scheme of 4 antennas is:
Subcarrier S 11 - S 12 * S 12 S 11 * User 1
Subcarrier S 21 - S 22 * S 22 S 21 * User 2
S 1ifor the data that user 1 sends, S 2ifor the data that user 2 sends, i=1,2,3,4.
Transmitting antenna is that the corresponding relation in the deversity scheme of 8 antennas is:
Subcarrier S 11 - S 12 * S 12 S 11 * User 1
Subcarrier S 21 - S 22 * S 22 S 21 * User 2
Subcarrier S 11 S 23 - S 12 * - S 24 * S 12 S 24 S 11 * S 23 * S 21 S 13 - S 22 * - S 14 * S 22 S 14 S 21 * S 13 *
The in the situation that of 8 antenna, adopt the two antenna space-frequency codings at most can multiplexing 4 users, the coding method while adopting 8 antenna, precoding vectors not only can be eliminated multi-user interference, can also strengthen user's signal energy.
When expanding to transmitting antenna and being N (N >=8) antenna, the corresponding relation in corresponding deversity scheme is:
Subcarrier S 11 - S 12 * S 12 S 11 * User 1
Subcarrier S 21 - S 22 * S 22 S 21 * User 2
…
Subcarrier S N / 2,1 - S N / 2,2 * S N / 2,2 S N / 2,1 * User N/2
Subcarrier S 11 S 23 - S 12 * - S 24 * S 12 S 24 S 11 * S 23 * S 21 S 13 - S 22 * - S 14 * S 22 S 14 S 21 * S 13 *
Wherein, S nifor the data that user n sends, n=1,2,3 ..., N/2, i=1,2,3,4.The in the situation that of N antenna, employing two antenna space-frequency codings at most can a multiplexing N/2 user.Coding method while adopting N antenna when number of users is less than N/2, precoding vectors not only can be eliminated multi-user interference, can also strengthen user's signal energy.
The schematic diagram that the MU-MIMO shown in Fig. 2 of take below processes is basis, and in conjunction with specific embodiments above-mentioned MU-MIMO processing method is further elaborated.
Mono-: 4 antenna multi-user 2 antenna diversity encoder matrix of embodiment are as follows:
Subcarrier S 11 - S 12 * S 12 S 11 * User 1
Subcarrier S 21 - S 22 * S 22 S 21 * User 2
Two streams (user 1 data flow and user's 2 data flow) of different user are assigned to respectively on two layers, carry out separately orthogonal set precoding, then for different users, be multiplied by different precoding vectors or BF vector, then by actual antennas, launch user data after resource mapping.
Precoding vectors herein or BF vector are in order to eliminate the interference between multi-user on the one hand, by ZF (ZF, Zero Forcing), block diagonalization (BD, Block Diagnolization) and the uncommon agate precoding (THP of Tomlinson-Harrar, Tomlinson-Harashima Precoding) mode such as, or carry out Interference Cancellation by multi-user's weight vectors pairing criterion; Be in order to strengthen each user's diversity gain on the other hand, can maximum Signal to Interference plus Noise Ratio (SINR, the Signal to InterferencNoise Ratio) criterion based on Eigenvalues Decomposition calculate weight vectors.
Under open loop case, utilize the interchangeability of channel, and by the estimation of the channel correlation matrix of up link is calculated to descending channel correlation matrix, to determine multi-user's vector pairing; Or adopt up ePlus link to calculate that ripple reaches angle (AOA, Angle of Arrival) thereby the BF vector that determines each user, select two users' pairings of two users (BF vector quadrature) of two differential seat angle maximums.Under closed-loop case, can select the user of two precoding vectors quadratures to match by feedback precoding codebook index (PMI, Precoding Matrix Index), also can feedback channel information (H i), and utilizing ZF or BD, THP algorithm to realize interference between multi-user and eliminate, autocorrelation matrix that also can feedback matrix, utilizes user's pairing algorithm to realize two pairings between user.
Bis-: 8 antenna multi-user 2 antenna diversity encoder matrixs of embodiment are as follows:
Subcarrier S 11 - S 12 * S 12 S 11 * User 1
Subcarrier S 21 - S 22 * S 22 S 21 * User 2
Subcarrier S 31 - S 32 * S 32 S 31 * User 3
Subcarrier S 41 - S 42 * S 42 S 41 * User 4
In 8 antenna situations during multiplexing 4 users, first the first two user's stream is mapped on four layers, then latter two user's stream is mapped on other four layers, then carry out separately the precoding of orthogonal set, then for different users, be multiplied by different precoding vectors or BF vector, finally by crossing resource mapping (being mapped to identical running time-frequency resource), by actual antennas, send again.The computational methods of precoding vectors or BF vector are identical with embodiment mono-.
It is pointed out that when adopting channel information to be PMI or order index (RI, Rank Index), when there is no best quadrature weight vectors, can adopt letter to leak and make an uproar than the matching method of (SLNR, Signal to LeakageNoise Ratio).In 8 antenna situations, during multiplexing user still less, precoding vectors not only can be eliminated multi-user interference, can also strengthen user's signal energy.
Tri-: 8 antenna multi-user 4 antenna diversity encoder matrixs of embodiment:
Subcarrier S 11 S 23 - S 12 * - S 24 * S 12 S 24 S 11 * S 23 * S 21 S 13 - S 22 * - S 14 * S 22 S 14 S 21 * S 13 *
User 1 is mapped to modulation symbol in the matrix of space-frequency coding by layering and diversity precoding, user 2 adopts complementary diversity pre-coding matrix that modulation symbol is mapped in space-frequency coding matrix, then user 1 and 2 carries out respectively multi-user pre-coding or BF processing, finally by crossing resource mapping, sends by actual antennas again.Adopt the diversity of 8 antennas can obtain good diversity gain, and adopted 8 antenna BF not only can eliminate multi-user interference, can also strengthen user's signal energy.Concrete precoding vectors or BF vector calculate described in embodiment mono-.
Tetra-: 8 antenna multi-user 4 antenna diversity encoder matrixs of embodiment:
Subcarrier S 11 S 12 S 23 S 24 - S 12 * S 11 * - S 24 * S 23 * S 21 S 22 S 13 S 14 - S 22 * S 21 * - S 14 * S 13 *
User 1 is mapped to modulation symbol in the matrix of space-frequency coding by layering and diversity precoding, user 2 adopts complementary diversity pre-coding matrix that modulation symbol is mapped in space-frequency coding matrix, then user 1 and 2 carries out respectively multi-user pre-coding or BF processing, finally by crossing resource mapping, sends by actual antennas again.Be the different of diversity pre-coding matrix from the difference of example three.Concrete precoding vectors or BF vector calculate described in embodiment mono-.
Five: 8 antenna multi-user 4 antenna diversity encoder matrixs of embodiment:
Subcarrier S 11 S 12 - S 13 * - S 14 * - S 12 * S 11 * S 14 - S 13 S 13 S 14 S 11 * S 12 * - S 14 * S 13 * - S 12 S 11 User 1
Subcarrier S 21 S 22 - S 23 * - S 24 * - S 22 * S 21 * S 24 - S 23 S 23 S 24 S 21 * S 22 * - S 24 * S 23 * - S 22 S 21 User 2
User 1 is mapped to modulation symbol in the matrix of space-frequency coding by layering and diversity precoding, user 2 adopts identical diversity pre-coding matrix that modulation symbol is mapped in space-frequency coding matrix, then user 1 and 2 carries out respectively multi-user pre-coding or BF processing, finally by crossing resource mapping (multi-user takies identical resource), sends by actual antennas again.Be the different of diversity pre-coding matrix from the difference of previous examples.This pre-coding matrix can provide better diversity gain.Concrete precoding vectors or BF vector calculate described in embodiment mono-.
For realizing the above-mentioned MU-MIMO processing method based on orthogonal set, the present invention also provides a kind of MU-MIMO processing unit based on orthogonal set, as shown in Figure 3, this device comprises: orthogonal set precoding module 10, multi-user pre-coding module 20 and transmitter module 30.Orthogonal set precoding module 10, for to the data flow of different user by layering and specific orthogonal set precoding, be mapped in the matrix of space-frequency coding.Multi-user pre-coding module 20, for the data of the different user of the matrix of space-frequency coding being carried out respectively to multi-user pre-coding or BF, process, concrete: the data of the different user in the matrix of space-frequency coding are multiplied by respectively to different precoding vectors, or are multiplied by different B F vector.Transmitter module 30, for the data after multi-user pre-coding module 20 is processed through the backward outer transmitting of resource mapping.
Multi-user pre-coding module 20 can be according to the interchangeability of up-downgoing interchannel, or according to up channel, the information feedback of down channel is calculated to precoding vectors or BF vector.Under open loop case, can utilize the interchangeability of channel, and calculate descending channel correlation matrix by the estimation of the channel correlation matrix to up, to determine multi-user's vector pairing; Or adopt up link to calculate AOA, to determine each user's BF vector.Under closed-loop case, by feedback PMI, select the user of two precoding vectors quadratures to match; Or by feedback channel information H i, and the interference that utilizes ZF or BD, THP algorithm to carry out between multi-user is eliminated; Or by the autocorrelation matrix of feedback matrix, and utilize user's pairing algorithm to carry out the pairing between two users.
When number of transmit antennas is more than or equal to 8, orthogonal set precoding module 10 is further used for, user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by complementation or identical diversity pre-coding matrix.
It is pointed out that the SFBC encoding scheme adopting in the present invention can have various deformation, thus quadrature empty frequently or Space Time Coding unit can substitute SFBC herein, SFBC+FSTD encoding scheme, and within the protection scope of the present invention that all should comprise.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.

Claims (7)

1. the multi-user's multiple-input and multiple-output MU-MIMO processing method based on orthogonal set, is characterized in that, the method comprises:
The data flow of different user, by independently layering and specific orthogonal set precoding, is mapped in the matrix of space-frequency coding;
The data of different user in described space-frequency coding matrix are carried out respectively to multi-user pre-coding or beam forming BF processing, and the data after processing are outwards launched by transmitting antenna after resource mapping;
When number of transmit antennas is more than or equal to 8, described method also comprises: user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix; Or,
User 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by the diversity pre-coding matrix identical with user 1.
2. the MU-MIMO processing method based on orthogonal set according to claim 1, it is characterized in that, when user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, while being mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix to user 2 data flow, the matrix of described specific orthogonal set precoding is:
S 11 S 23 - S 12 * - S 24 * S 12 S 24 S 11 * S 23 * S 21 S 13 - S 22 * - S 14 * S 22 S 14 S 21 * S 13 *
Wherein, S 1irepresent the data that user 1 sends, S 2irepresent the data that user 2 sends, i=1,2,3,4.
3. the MU-MIMO processing method based on orthogonal set according to claim 1, it is characterized in that, when user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, while being mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix to user 2 data flow, the matrix of described specific orthogonal set precoding is:
S 11 S 12 S 23 S 24 - S 12 * S 11 * - S 24 * S 23 * S 21 S 22 S 13 S 14 - S 22 * S 21 * - S 14 * S 13 *
Wherein, S 1irepresent the data that user 1 sends, S 2irepresent the data that user 2 sends, i=1,2,3,4.
4. the MU-MIMO processing method based on orthogonal set according to claim 1, it is characterized in that, when user 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, while being mapped in the matrix of space-frequency coding by the diversity pre-coding matrix identical with user 1 to user 2 data flow, the matrix of described specific orthogonal set precoding is:
S 11 S 12 - S 13 * - S 14 * - S 12 * S 11 * S 14 - S 13 S 13 S 14 S 11 * S 12 * - S 14 * S 13 * - S 12 S 11 , S 21 S 22 - S 23 * - S 24 * - S 22 * S 21 * S 24 - S 23 S 23 S 24 S 21 * S 22 * - S 24 * S 23 * - S 22 S 21
Wherein, S 1irepresent the data that user 1 sends, S 2irepresent the data that user 2 sends, i=1,2,3,4.
5. according to the MU-MIMO processing method based on orthogonal set described in any one in claim 1 to 4, it is characterized in that, described multi-user pre-coding or BF process, and are specially:
The data of the different user in the matrix of described space-frequency coding are multiplied by respectively to different precoding vectors, or are multiplied by different B F vector.
6. the multi-user's multiple-input and multiple-output MU-MIMO processing unit based on orthogonal set, is characterized in that, this device comprises:
Orthogonal set precoding module, for to the data flow of different user by layering and specific orthogonal set precoding, be mapped in the matrix of space-frequency coding;
Multi-user pre-coding module, processes for the data of the different user of the matrix of described space-frequency coding being carried out respectively to multi-user pre-coding or beam forming BF;
Transmitter module, for by the data after described multi-user pre-coding resume module through the backward outer transmitting of resource mapping;
When number of transmit antennas is more than or equal to 8, described orthogonal set precoding module is further used for,
User 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by complementary diversity pre-coding matrix; Or,
User 1 data flow is mapped in the matrix of space-frequency coding by layering and diversity precoding, user 2 data flow is mapped in the matrix of space-frequency coding by the diversity pre-coding matrix identical with user 1.
7. the MU-MIMO processing unit based on orthogonal set according to claim 6, it is characterized in that, described multi-user pre-coding module is further used for, and the data of the different user in the matrix of described space-frequency coding are multiplied by respectively to different precoding vectors, or is multiplied by different B F vector.
CN200910091472.1A 2009-08-21 2009-08-21 Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity Active CN101997649B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200910091472.1A CN101997649B (en) 2009-08-21 2009-08-21 Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity
PCT/CN2010/073408 WO2011020359A1 (en) 2009-08-21 2010-05-31 Processing method and apparatus for multi-user multi-input multi-output based on orthogonal diversity

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200910091472.1A CN101997649B (en) 2009-08-21 2009-08-21 Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity

Publications (2)

Publication Number Publication Date
CN101997649A CN101997649A (en) 2011-03-30
CN101997649B true CN101997649B (en) 2014-12-10

Family

ID=43606610

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200910091472.1A Active CN101997649B (en) 2009-08-21 2009-08-21 Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity

Country Status (2)

Country Link
CN (1) CN101997649B (en)
WO (1) WO2011020359A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9526091B2 (en) * 2012-03-16 2016-12-20 Intel Corporation Method and apparatus for coordination of self-optimization functions in a wireless network
WO2017152405A1 (en) 2016-03-10 2017-09-14 华为技术有限公司 Transmission diversity method, device and system
CN107733492B (en) * 2016-08-10 2020-09-04 华为技术有限公司 Data transmitting and receiving method and device
CN107733592B (en) 2016-08-10 2020-11-27 华为技术有限公司 Transmission scheme indication method, data transmission method, device and system
CN108632181A (en) * 2017-03-24 2018-10-09 华为技术有限公司 Data transmission method for uplink and device and data receiver method and device
CN110086732B (en) * 2018-01-25 2020-09-29 华为技术有限公司 Channel estimation method and device
CN112311431B (en) * 2019-07-31 2021-10-26 华为技术有限公司 Indication method and device for space-frequency merging coefficient

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101047417A (en) * 2007-04-20 2007-10-03 哈尔滨工程大学 Selection preprocess method for downlink link antenna of multi-user MIMO system
CN101291451A (en) * 2007-04-18 2008-10-22 华为技术有限公司 Downlink data transmission method and apparatus for multicast and broadcast service
CN101461268A (en) * 2006-06-01 2009-06-17 卢森特技术有限公司 Coordinating transmission scheduling among multiple base stations

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6954655B2 (en) * 2001-11-16 2005-10-11 Lucent Technologies Inc. Encoding system for multi-antenna transmitter and decoding system for multi-antenna receiver
US7095709B2 (en) * 2002-06-24 2006-08-22 Qualcomm, Incorporated Diversity transmission modes for MIMO OFDM communication systems
FR2848747A1 (en) * 2002-12-16 2004-06-18 France Telecom Pre-coded signal emitting process for wireless communication system, involves interlacing pre-coded transmitted symbols to modify temporal order of symbols and coding each block of symbols according to coding time space
US8705659B2 (en) * 2003-11-06 2014-04-22 Apple Inc. Communication channel optimization systems and methods in multi-user communication systems
WO2006094860A1 (en) * 2005-03-08 2006-09-14 France Telecom Method for the iterative reception of a multicarrier signal with interference cancellation, and corresponding receiver and computer program
CA2660826A1 (en) * 2006-08-07 2008-02-21 Interdigital Technology Corporation Method, apparatus and system for implementing multi-user virtual multiple-input multiple-output
CN101394254B (en) * 2007-09-20 2011-04-20 鼎桥通信技术有限公司 Linear pre-coding method in multi-user MIMO system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101461268A (en) * 2006-06-01 2009-06-17 卢森特技术有限公司 Coordinating transmission scheduling among multiple base stations
CN101291451A (en) * 2007-04-18 2008-10-22 华为技术有限公司 Downlink data transmission method and apparatus for multicast and broadcast service
CN101047417A (en) * 2007-04-20 2007-10-03 哈尔滨工程大学 Selection preprocess method for downlink link antenna of multi-user MIMO system

Also Published As

Publication number Publication date
WO2011020359A1 (en) 2011-02-24
CN101997649A (en) 2011-03-30

Similar Documents

Publication Publication Date Title
CN101166052B (en) Precoding method for multi-input multi-output system and apparatus using same
Love et al. What is the value of limited feedback for MIMO channels?
CN101686110B (en) Multi-input multi-output system, data transmission method and data transmission device thereof
CN100499395C (en) Space-time transmit diversity (STTD) for multiple antennas in radio communications
CN102725967B (en) For the method and apparatus of information feed back and precoding
CN101997649B (en) Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity
CN102571301B (en) Dual-codebook-based multi-user adaptive feedback method
CN103166688B (en) A kind of implementation method of precoding, device and mimo system
EP2166675A1 (en) Method and device for pre-processing data to be transmitted in multi input communication system
CN101785210B (en) Channel aware multiple user MIMO scheme unified with single user closed loop MIMO
CN101217304A (en) A multi-input and multi-output recoding processing method of multi-subchannel
CN102710394B (en) Spatial modulation method based on transmitting antenna selection for MIMO (Multi-Input Multi-Output) system
WO2009119973A1 (en) Method for transmitting signals for reducing feedback overhead and method for transmitting feedback information for the same
CN106374985B (en) Method and device for sending and receiving multi-user data
KR100715582B1 (en) Method and apparatus for transmitting/receiving data using precoding codebook in mimo communication system
CN101388703A (en) Multi-user MIMO pre-encoding method and system
JP5865485B2 (en) Spatial channel state information feedback method and system for multiple input / output (MIMO)
CN104753628A (en) Channel information feedback method and system, base station and terminal
CN102142938A (en) Signal-to-leakage-and-noise ratio-based precoding construction method in limited feedback system
CN102315912A (en) Method for providing pre-encoding matrix, method for providing decoding matrix and base station
US9479237B2 (en) Vector selection modulation-based multi-antenna transmission method, receiving method and device
CN101873190B (en) Pre-coding method and device
CN101394256A (en) Pre-coding method and codebook constructing method based on codebook mode
KR101055573B1 (en) Precoding Device in Multi-User, Multi-antenna Radio Transmission System
CN101645757A (en) Method and device for selecting precoding matrix

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
EE01 Entry into force of recordation of patent licensing contract

Application publication date: 20110330

Assignee: SANECHIPS TECHNOLOGY Co.,Ltd.

Assignor: ZTE Corp.

Contract record no.: 2015440020319

Denomination of invention: Method and device for processing MU-MIMO (Multiuser Multiple-Input Multiple-Output) based on orthogonal diversity

Granted publication date: 20141210

License type: Common License

Record date: 20151123

LICC Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model
TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20201224

Address after: 215163 8 Jinfeng Road, science and Technology City, Suzhou high tech Zone, Jiangsu

Patentee after: Suzhou Medical Device Industry Development Co.,Ltd.

Address before: 518057 Ministry of justice, Zhongxing building, South Science and technology road, Nanshan District hi tech Industrial Park, Shenzhen, Guangdong

Patentee before: ZTE Corp.

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 215163 8 Jinfeng Road, science and Technology City, Suzhou high tech Zone, Jiangsu

Patentee after: Suzhou Medical Device Industry Development Group Co.,Ltd.

Address before: 215163 8 Jinfeng Road, science and Technology City, Suzhou high tech Zone, Jiangsu

Patentee before: Suzhou Medical Device Industry Development Co.,Ltd.