联合空时编码及信道状态信息的多输入多输出分集性能  

MIMO diversity performance combining space-time codes and channel state information

作　　者：张江林[1] 孙景芳[2] 杨平[2] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,哈尔滨150001 [2]武汉船舶通信研究所,武汉430079

出　　处：《大连海事大学学报》2007年第3期59-62,共4页Journal of Dalian Maritime University

基　　金：国防科技预研基金资助项目(3.7.3)

摘　　要：为提高无线多输入多输出(MIMO)系统的分集性能,介绍一种四天线发送的扩展正交空时分组码(EO-STBC),并根据该分组码特点提出一种基于双比特反馈的分集增益自适应控制方法.该方法利用信道状态信息(CSI),采用天线选择接收,可实现全速率和发送信号的全分集.仿真结果表明,采用扩展正交空时分组码的反馈系统不仅在性能上优于传统的反馈控制系统,而且采用天线选择时,增益提高了5.8 dB.The paper introduces extended orthogonal space-time block codes （EO-STBC） with four antenna selections for MIMO system, and proposed a MIMO diversity adaptive control method based on pair bits feedback according to EO-STBC characteristic. This method not only realized a full rate and full diversity, but also improved the MIMO diversity performance through channel state information （CSI） and antenna selection. Simulation result shows that for four transmit antennas, performance gains of up to 5.8 are obtained over the adaptive control EO-STBC system without antenna selection.

关 键 词：空时分组码 多输入多输出 天线选择 自适应控制 

分 类 号：TN911.23[电子电信—通信与信息系统]