无线MIMO系统中球解码算法的一种改进  

An Improved Sphere Decoder Algorithm in Wireless MIMO System

作　　者：王韦刚[1] 

机构地区：[1]南京邮电大学,江苏省南京市210003

出　　处：《电子工程师》2007年第8期44-47,共4页Electronic Engineer

摘　　要：简要介绍了无线M IMO(多输入多输出)系统模型,研究了CL以及KCL球解码算法,并对其性能和复杂度进行了比较;重点介绍了CLimp算法,这种近似算法是一种新的低计算量、准最优的球检测算法,并对其性能进行了详细分析。在此基础上,提出了加权KCL与CLimp近似算法结合的JCLimp新算法,仿真结果表明此新算法在与CL算法、CLimp算法误比特率性能近似的情况下,算法复杂度具有一定的优势,证明了JCLimp算法的有效性。This paper first introduces the wireless MIMO system, it studies the CL and KCL sphere decoder algorithm with a comparison about their performance and complexity. After that, it introduces CLimp algorithm that this approximate algorithm constructs a new low complexity and near to best sphere decoder algorithm, and analyzes its performance in detail. Based on this, this paper proposes a new JCLimp algorithm by combining the mixing KCL and CLimp algorithm. The simulation results prove the efficiency of bit error rates is very near to CL algorithm, but its complexity is far lower than CL algorithm, this performance proved its affectivity.

关 键 词：MIMO 球解码 误比特率 复杂度 

分 类 号：TN911.22[电子电信—通信与信息系统]