改进的基于序列列表的MIMO迭代检测算法  

An Improved Algorithm Based on List Sequential Detector for MIMO System

作　　者：孙艳华[1] 龚萍[1] 吴伟陵[1] 

机构地区：[1]北京邮电大学信息工程学院,北京100876

出　　处：《电子与信息学报》2007年第2期260-264,共5页Journal of Electronics & Information Technology

基　　金：国家863计划(2001AA123016)资助课题

摘　　要：该文改进了列表检测算法的列表搜索方法,提出首序列优先的搜索方法,同时提出了一种降低复杂度的迭代检测算法,该算法改变了列表检测基于列表的软信息计算方式,利用半定松弛算法思想采用最大似然测试降低了计算复杂度。仿真结果表明首序列优先检测算法与基本列表算法相比,在复杂度增加很小的情况下取得了更好的性能,提出的迭代检测算法降低了平均计算复杂度,取得了和首序列优先算法相同的性能。An improved iterative detection algorithm is proposed in this paper, which introduces a new method of computing soft information based on the idea of semidefinite relaxation rather than on a list. Also a head-first list search algorithm is put forward to improve the performance of list sequential detector. Simulations show that the head-first list sequential detector outperforms the basic list sequential detector at the cost of little increasing complexity and the proposed iterative detector achieves the same performance of head-first list sequential detector but decreases the complexity.

关 键 词：MIMO 列表序列检测 迭代检测 

分 类 号：TN911.23[电子电信—通信与信息系统]