MIMO系统中基于分组结构的迭代检测器  

Iterative Detector Based on Grouped Signals for MIMO Wireless Systems

作　　者：杨远[1] 张海林[1] 胡军锋[1] 

机构地区：[1]西安电子科技大学综合业务网国家重点实验室,西安710071

出　　处：《北京邮电大学学报》2009年第2期47-51,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：高等学校学科创新引智计划项目(B08038);陕西省自然科学基础研究计划项目(2006F30)

摘　　要：利用降维分组和迭代检测的思想,提出并行和串行2种结构的迭代分组检测器.迭代分组检测器利用上一次检测得到软信息更新关于干扰信号的均值和白化滤波器系数,这样可以显著降低系统误码率,而在每次迭代之间,随机分组算法的使用又进一步降低系统误码率.仿真结果表明,并行分组最大后验概率检测器能在系统性能、检测延时和复杂度之间取得较好的平衡,是可以选择的检测算法.Based on the grouped signals and iterative detections, both parallel and serial iterative detectors are proposed for multiple-input multiple-output （MIMO） wireless systems. The iterative detectors use the soft information obtained from last detection to get the mean of the interference signals and the coefficients of the whitening filter. Thus the iterative detector can greatly reduce the bit-error rate. Between the iterations, the random grouping algorithm can further reduce the bit-error rate. Simulation shows that the maximum parallel iterative groups a posterior detector （P-IGMAP） and has a good balance between the system performance and the will be a promising choice in practice use. detection delay and the complexity. So P-IGMAP

关 键 词：多输入多输出系统 迭代检测 连续干扰抵消 并行干扰抵消 

分 类 号：TN911.7[电子电信—通信与信息系统]