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The method for antenna selection scheme and signal detection in the multi-antenna communication system

A technology for antenna selection and communication systems, applied in diversity/multi-antenna systems, radio transmission systems, preventing/detecting errors through diversity reception, etc., can solve problems such as no high-efficiency implementation methods, and achieve easy hardware implementation and reduce The effect of less calculation and less computational complexity

Inactive Publication Date: 2007-08-01
HUAWEI TECH CO LTD
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Problems solved by technology

[0028] To sum up, for the communication scheme with antenna selection, there is no efficient implementation method

Method used

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  • The method for antenna selection scheme and signal detection in the multi-antenna communication system
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  • The method for antenna selection scheme and signal detection in the multi-antenna communication system

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Embodiment Construction

[0059] In order to make the object, technical solution and advantages of the present invention clearer, specific examples are given below to further describe the present invention in detail.

[0060] The present invention uses the multi-antenna digital wireless communication system shown in Figure 1 to transmit signal s 1 ,...,s M are respectively transmitted through M different transmitting antenna units a-1,...,a-M; the corresponding received signal x 1 ,...,x N Receive from N different receiving antenna units b-1,...,b-N respectively.

[0061] The paper "A FastRecursive Algorithm for Optimum Sequential Signal Detection in a BLASTSystem" in the IEEE journal IEEE Transactions on Signal Processing mentions that the channel matrix H is an N×M matrix expressed as

[0062]

[0063] The channel matrix H is an NxM complex matrix which is assumed to be constant over a period of K symbols. vector h n : (n=1, 2, ..., N) and h ：m The lengths of (m=1, 2, . . . , M) are M and N,...

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Abstract

The invention discloses a method for determining the selection project of antenna on the multi antenna communication system, the method includes: using the decomposition gene matrix of estimating error covariance matrix of little emission antenna recurs the middle variables of decomposition gene matrix of few emission antennas, and uses the middle variables to compare the receiving signal and disturbance signal SINR of all emission antennas chosen by the all selection projects of antennas, and determines the selection project according to the comparing SINR result. The invention also provides a detection method in the multi antenna communication system, the method includes: using the decomposition gene matrix of estimating error covariance matrix which are got by the SINR, or using the middle variables of decomposition gene matrix and relative with the decomposition gene matrix to recur the decomposition gene matrix which is need by the detection signal, calculate the zero vector of every detected emission antennas, and use the zero vector to detect the signal of emission antenna.

Description

technical field [0001] The invention relates to multi-antenna multiple-input multiple-output (MIMO) digital wireless communication technology, in particular to a method for determining an antenna selection scheme and detecting signals in a MIMO digital wireless communication system with antenna selection. Background technique [0002] According to information theory, the use of multi-antenna arrays at the transmitting end and receiving end of a communication system, or at both ends, can greatly increase the transmission bit rate. [0003] A wireless communication system with a space-time architecture using multiple antenna arrays at both the transmitter and receiver is shown in Figure 1. The system works in a Rayleigh scattering environment, and each element of the channel matrix can be approximately regarded as statistically independent. In the system shown in Figure 1, a data sequence is divided into M uncorrelated symbol subsequences, and each subsequence is transmitted ...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04L1/06
CPCH04B7/0602
Inventor 张毅
Owner HUAWEI TECH CO LTD
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