一种低复杂度软入软出迭代检测方案  

A Low-complexity Soft-in/Soft-out Iterative Detection

作　　者：邢艳东[1] 燕兵 李雁秋[3] 

机构地区：[1]中国联通广州市分公司,广东广州510565 [2]上海华勤通讯技术有限公司,上海201203 [3]淮安市科技局,江苏淮安223001

出　　处：《通信技术》2010年第12期77-78,81,共3页Communications Technology

摘　　要：在MIMO系统中,以软输入软输出方式为基础的迭代检测方式,性能要明显优于基于硬判决的迭代方案。因此基于软信息传递的迭代检测理论具有广泛的应用。但是,其复杂度较高,特别是应用于MIMO系统时,复杂度的限制尤为明显。球形译码是一种近似最大似然检测的低复杂度方案,在这里,引入一种低复杂度的软入软出(SISO)球形译码迭代方案,并给出球形译码中搜索树的删减简化方案。In MIMO system,the performance of soft-in/soft-out based iterative detection method is obviously better than that of hard decision-based iterative detection method.So the soft information-based iterative detection theory has a wide application.However,it is of high complexity,especially applied in MIMO systems.In this paper,a low-complexity soft-in soft-out（SISO） iterative detection method is proposed,and a low-complexity SISO iterative strategy for spherical decoding is introduced in this method.Also a simplified scheme of searching tree for spherical decoding is given in this paper.

关 键 词：迭代检测 软入软出 MIMO 球形译码 低复杂度 

分 类 号：TN919.81[电子电信—通信与信息系统]