采用故意时延的V-BLAST系统的最佳迫零检测

林华炯; 唐友喜; 邵士海

doi:10.3724/SP.J.1146.2008.01421

采用故意时延的V-BLAST系统的最佳迫零检测

doi: 10.3724/SP.J.1146.2008.01421

基金项目:

国家自然科学基金(60572090, 60832007, 60602009)和教育部博士点基金(20050614009)资助课题

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出版历程
- 收稿日期: 2008-11-03
- 修回日期: 2009-06-22
- 刊出日期: 2009-11-19

Optimum Zero-Forcing Detection of a Modified V-BLAST System with Delay Offsets

摘要

摘要: Shao(2007)提出了一种故意时延的垂直贝尔实验室分层空时码结构(V-BLAST)系统，但是其中提出的迫零检测算法并不是满足迫零准则下的最优算法。本文直接从接收天线处的未采样连续信号数学模型分析入手，利用泛函分析的方法推导出了该系统最优的迫零检测算法，理论和仿真都表明该算法优于Shao提出的迫零算法。本文的工作对进一步研究这种新型的故意时延的V-BLAST系统具有较为重要的意义。
- 多输入多输出(MIMO); 异步; 故意时延; 分集度; 迫零(ZF)
Abstract: A modified Vertical-Bell Labs layered space-time (V-BLAST) system is proposed by Shao(2007). However, the ZF detection algorithm proposed by Shao is not the optimum under ZF criterion. In this paper, the optimum ZF detector is directly derived from the original continuous, unsampled signals at receive antennas. Both Analysis and simulation demonstrate that the optimum ZF detection is superior to the ZF detection algorithm proposed by Shao, especially when the number of transmit antennas is large.

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