一种低复杂度Householder变换发射天线选择算法  

Low Complexity Householder Transform Transmit Antenna Selection Algorithm

作　　者：黑永强[1] 李晓辉[1] 易克初[1] 杨宏[2] 

机构地区：[1]西安电子科技大学综合业务国家重点实验室,西安710071 [2]中国空间技术研究院总体部,北京100094

出　　处：《系统仿真学报》2010年第8期1997-2000,共4页Journal of System Simulation

基　　金：国家自然科学基金(60702060);高等学校学科创新引智计划资助项目(B08038);国家重点实验室专项基金(ISN03080005);下一代宽带无线移动通信网络国家重大专项(2009ZX03003-005)

摘　　要：提出一种低复杂度Householder变换发射天线选择算法(LGHQR)。以发射天线数目的一半为界,根据所选天线数目确定采用增加或删除的天线选择方式。分别将具有最大和最小范数的天线标记于增加集和删除集,每次只对剩余天线集进行Householder变换,保证性能的同时降低算法的复杂度。所提算法进一步应用于相关信道下VBLAST系统来验证有效性。理论分析和仿真结果表明,与传统算法相比,所提算法具有较好的容量和误码性能。A low complexity Householder transform transmit antenna selection algorithm was proposed.Eliminating mode or adding mode was adopted according to the relationship between the number of selected antennas and the half number of transmit antennas.Antennas corresponding to the maximum norm and the minimum norm were separately labeled in the adding sets and the eliminating sets respectively,Householder transform was applied to the remaining matrix during each iteration,which could maintain the performance and decrease the complexity significantly.Furthermore,VBLAST under correlated channels was constructed to testify the proposed algorithm.Theoretical analysis and simulation results show that both the capacity and the BER performance of the proposed algorithm are better than that of the traditional algorithms.

关 键 词：Householder变换 天线选择 相关信道 QR分解 

分 类 号：TN929.5[电子电信—通信与信息系统]