衰落信道中的串并混合型多用户检测算法  

Mixed Serial-parallel Multi-user Detection Algorithm in Fading Channels

作　　者：王正茂[1] 叶梧[1] 冯穗力[1] 张焕明[1] 

机构地区：[1]华南理工大学电子与通信工程系,广东广州510640

出　　处：《华南理工大学学报（自然科学版）》2003年第12期17-21,共5页Journal of South China University of Technology(Natural Science Edition)

摘　　要：提出了一种基于RLS算法的新的决策反馈串并混合型多用户检测算法 .在衰落信道条件下 ,针对系统数据传输速率的不同分成考虑码间干扰 (ISI)和不考虑码间干扰两种情形对算法进行了理论分析 ,给出了一个关于误码率的理论计算公式 ,并进行了计算机仿真 .所得结果表明 ,该算法具有较高的准确性 ,误码率较低 ,成本较为低廉 ,有一定的实用价值 .A new mixed serial parallel multi user detection algorithm with decision feedback was proposed on the basis of RLS algorithm. Theoretical analyses of the new algorithm in fading channels were carried out, where the system data transfer rates were divided into two cases: one is related to ISI, the other is not. A theoretical formula for BER (Bit Error Rate) calculation was then presented and the simulation of the algorithm was performed. The results show that the algorithm proposed here is of high correctness and low BER with low cost, thus making the algorithm practicable.

关 键 词：DS-CDMA系统 多址干扰 多用户检测算法 衰落信道 误码率 CDMA 

分 类 号：TN911.23[电子电信—通信与信息系统]