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应用科学学报 ›› 2004, Vol. 22 ›› Issue (3): 327-331.

• 论文 • 上一篇    下一篇

用于行对角占优信道矩阵的MIMO盲均衡算法

刘谦雷, 杨绿溪   

  1. 东南大学无线电工程系 江苏南京 210096
  • 收稿日期:2003-05-15 修回日期:2003-07-18 出版日期:2004-09-30 发布日期:2004-09-30
  • 作者简介:刘谦雷(1967-),男,江苏丹阳人,博士生;杨绿溪(1964-),男,安徽桐城人,教授,博导.
  • 基金资助:
    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

Blind MIMO Equalization Algorithm for Row Diagonally Predominant Channel Matrix

LIU Qian-lei, YANG Lü-xi   

  1. Department of Radio Engineering, Southeast University, Nanjing 210096, China
  • Received:2003-05-15 Revised:2003-07-18 Online:2004-09-30 Published:2004-09-30

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82

被引次数

2

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

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.

Key words: elementary matrix transformation, equalizing parameter estimation deviation, blind MIMO equalization, row-diagonally-dominant MIMO channel

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