V-BLAST MIMO系统中基于增广信道矩阵分析的发射天线选择算法  

Transmit antenna selection for V-BLAST MIMO systems based on extended channel matrix analysis

作　　者：刘建国[1] 杨绿溪[1] 

机构地区：[1]东南大学无线电工程系,江苏南京210096

出　　处：《电路与系统学报》2008年第1期29-34,共6页Journal of Circuits and Systems

基　　金：国家重点基础研究发展计划(2007CB310603);国家自然科学基金(6067209360496310);国家863项目(2007AA01Z262);江苏省自然科学基金(BK2005061);华为高校基金资助课题

摘　　要：为了减少MIMO无线通信系统的射频链路硬件成本和降低系统复杂度,针对采用排序逐次干扰抵消(OSIC)接收的MMSE V-BLAST系统,通过对增广信道矩阵进行次优排序和QR分解分析,提出了一种新颖低复杂度的发射天线选择算法。与其它方案不同的是,本文算法综合考虑了排序、干扰抵消和噪声对天线选择性能的影响。仿真结果表明,该算法的性能比其它算法的性能有很大改善。In order to reduce the hard cost of multiple RF chains and complexity of spatial multiplexing systems, in this paper a novel low-complexity transmit antenna selection algorithm is proposed based on extended channel matrix analysis for MMSE V-BLAST systems with ordered successive interference cancellation （OSIC） detection. Unlike other schemes, the proposed algorithm synthetically considers the impacts of detection order, interference cancellation and noise amplification for MMSE V-BLAST system. Simulation results show that this algorithm achieves better system performance than the other algorithms.

关 键 词：发射天线选择 MMSE V-BALST OSIC QR分解 

分 类 号：TN911[电子电信—通信与信息系统]