球解码的改进算法  

An Improved Method of Sphere Decoder Algorithm

作　　者：骆静[1] 

机构地区：[1]南京邮电大学光电工程学院,江苏南京210003

出　　处：《通信技术》2008年第2期30-31,38,共3页Communications Technology

摘　　要：文中首先对MIMO系统启发式算法中的BLAST算法和球解码(CL算法)进行了研究。然后,在前面介绍的相关知识基础上,提出了一种新的球解码算法。该改进算法结合BLAST算法计算量小和球解码算法(CL算法)误码性能好的优点而提出的。改进算法在牺牲一定误码性能的情况下,换取算法计算量的大幅度下降。仿真结果表明了这种改进算法的有效性。This paper first introduces BLAST heuristic methods of decoding in MIMO systems and the sphere decoding of CL. Then a new improved method of sphere decoding algorithm is proposed, which integrates lower complexity for heuristic methods of decoding with better performance for sphere decoding algorithm. The improved algorithm could get significant reduction in complexity with certain loss in performance. Simulation results have proved the efficiency of this improved method.

关 键 词：多输入多输出 启发式算法 球解码算法 复杂度 

分 类 号：TN911[电子电信—通信与信息系统]