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用于行对角占优信道矩阵的MIMO盲均衡算法
引用本文:刘谦雷,杨绿溪.用于行对角占优信道矩阵的MIMO盲均衡算法[J].应用科学学报,2004,22(3):327-331.
作者姓名:刘谦雷  杨绿溪
作者单位:东南大学无线电工程系 江苏南京 210096
基金项目:国家自然科学基金(60272046),863项目(2002AA123031),江苏省自然科学基金(BK2002051)资助项目
摘    要:对MIMO通信信道提出了一种基于矩阵初等变换的均衡算法,将其用于行对角占优的MIMO系统,则得到相应的MIMO盲均衡算法.该算法基于通信源信号的统计特性,利用数学上通过矩阵初等变换实现矩阵对角化的原理对MIMO信道矩阵实现了对角化.将该盲均衡算法用于常规的MIMO系统,则可以克服系统因突发干扰等因素产生的常规均衡器均衡参数的估计偏差,提高系统的误码性能.仿真实验证实,所提出的MIMO盲均衡算法在行对角占优信道矩阵的均衡和常规均衡器均衡参数估计偏差的克服中均取得了良好的效果.

关 键 词:MIMO盲均衡  矩阵初等变换  行对角占优MIMO信道  均衡参数估计偏差  
文章编号:0255-8297(2004)03-0327-05
收稿时间:2003-05-15
修稿时间:2003-07-18

Blind MIMO Equalization Algorithm for Row Diagonally Predominant Channel Matrix
LIU Qian-lei,YANG L&#,-xi.Blind MIMO Equalization Algorithm for Row Diagonally Predominant Channel Matrix[J].Journal of Applied Sciences,2004,22(3):327-331.
Authors:LIU Qian-lei  YANG L&#  -xi
Institution:Department of Radio Engineering, Southeast University, Nanjing 210096, China
Abstract:An equalization algorithm based on the elementary matrix transformation is proposed for the MIMO communication channel, and the corresponding blind equalization algorithm is obtained for the row-diagonally-dominant MIMO system. This algorithm diagonalizes the MIMO channel matrix based on the statistics of the source signals by using the elementary matrix transformation in mathematics. The application of this blind equalization algorithm in ordinary MIMO system can eliminate the parameter estimation deviation of the ordinary MIMO equalizer because of sudden interruptions etc. and improve the BER performance of the system. Simulation results demonstrate that the proposed blind MIMO equalization algorithm has excellent performance both in equalizing the row-diagonally-dominant channel matrix and the elimination of the parameter estimation deviation of the ordinary equalizer.
Keywords:blind MIMO equalization  elementary matrix transformation  row-diagonally-dominant MIMO channel  equalizing parameter estimation deviation  
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