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.
出处
《大连海事大学学报》
EI
CAS
CSCD
北大核心
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)
关键词
空时分组码
多输入多输出
天线选择
自适应控制
space-time block codes
multi-input multi-output
antenna selection
adaptive control
