基于MIMO-OFDM系统的低复杂度LS改进算法  

A Low Complexity Improved LS Method for MIMO-OFDM System

作　　者：牛晓慧[1] 吴耀军[1] 

机构地区：[1]华东理工大学,200237

出　　处：《微计算机信息》2009年第22期145-146,共2页Control & Automation

摘　　要：本文建立了MIMO-OFDM系统的Matlab仿真模型,在此基础上研究了STBC(Space Time Block Code)空时编码和基于块状导频的信道估计算法。对基于块状导频的LS(Least Square)信道估计算法做了低复杂度的改进,改进后的算法称为LLS(Low complexity LS)算法。经过计算机仿真显示,在传送大量信息时,该算法的运算复杂度及运算时间相较于其他的信道估计算法都大大降低,并且提高了信道估计的误码率性能。In this paper, Space Time Block Code （STBC） and channel estimation algorithms based on block-type pilot are studied in MIMO-OFDM system. A low complexity improved LS channel estimation method is applied in fading channel based on block-type pilot, which is called Low complexity Least Square （LLS）. Computer simulation shows that the LLS channel estimation improves the BER performance with less complexity.

关 键 词：信道估计 空时分组码 最小二乘算法 低复杂度最小二乘算法 

分 类 号：TN92[电子电信—通信与信息系统]