编码CDMA系统中的一种迭代多用户接收器  

An Iterative Multiuser Receiver for Coded CDMA Systems

作　　者：张爱萍[1] 罗汉文[1] 王豪行[1] 

机构地区：[1]上海交通大学电子工程系,上海200030

出　　处：《上海交通大学学报》2003年第6期816-819,共4页Journal of Shanghai Jiaotong University

基　　金：教育部重点学科资助项目 (A80 82 )

摘　　要：编码 CDMA系统中的迭代多用户接收器通过在采用软输入软输出算法的多用户检测和信道译码之间反复传递软信息而提高接收系统性能 .最优的软输入软输出多用户检测器具有指数的计算复杂度 ,文中提出了一种简化的软输入软输出多用户检测算法 .仿真结果表明 ,这种迭代多用户接收器的性能接近基于最优多用户检测的迭代多用户接收器 .The iterative multiuser receiver for coded CDMA systems, in which both multiuser detector and channel decoder are implemented with soft in soft out (SISO) algorithm, improves the receiver's performance by passing soft information between the multiuser detector and the channel decoder. The computational complexity of the optimal SISO multiuser detector increases exponentially with the number of the users. In this paper, a reduced complexity SISO multiuser detector was proposed. The simulation results show that the bit error performance of this iterative multiuser receiver approaches that of the iterative multiuser receiver based on optimal SISO multiuser detector.

关 键 词：码分多址 多用户检测 参数估计 信道译码 迭代 

分 类 号：TN929.533[电子电信—通信与信息系统]