VBLAST系统检测算法改进  

An Improved Detection Algorithm in VBLAST System

作　　者：王洪香[1] 

机构地区：[1]重庆大学,重庆400030

出　　处：《重庆科技学院学报（自然科学版）》2011年第4期173-176,共4页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

摘　　要：对VBLAST系统中的QRD-M树搜索检测算法进行研究,给出一种基于MMSE-SQRD分解的对候选节点减少排序复杂度的检测算法,并对算法性能和复杂度进行分析。仿真结果表明,高信噪比时算法的性能得到提高,但在天线数较少时该算法的复杂度大大降低。The conventional QRD-M Tree-Search algorithm for VBLAST system is studied and an improved QRD-M algorithm based on MMSE-SQRD decomposition is proposed to reduce the complexity of sorting the candidate node in this paper.Through complexity analysis and simulations,it is proved that except for small M values,the proposed algorithm reduces computation complexity of signal detection significantly.In higher SNR regimes,it also improves the BER performance.

关 键 词：VBLAST系统 QRD-M QR分解 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]