一种基于ML准则的适用于频率选择性多径衰落的多用户检测算法  

A MULTIUSER DETECTOR DERIVED FROM ML CRITERIA FOR CDMA FREQUENCY SELECTIVE FADING CHANNEL

作　　者：王勇[1] 仲文[1] 陈明[1] 程时昕[1] 尤肖虎[1] 

机构地区：[1]东南大学无线电系国家移动通信实验室,南京210096

出　　处：《电子科学学刊》2000年第5期817-823,共7页

摘　　要：本文采用ML准则得出了适于频率选择性衰落的线性解相关算法。仿真表明本方法性能优于Zvonar提出的先解相关再最大比值合并的算法;且该方法由于采用等价扩频序列实现,硬件耗费也较少。In this paper, a decorrelator for multiuser detection derived from ML criteria in CDMA system is proposed for frequency selective fading channels. Simulations prove the better performance of this method than the method proposed by Zvonar in which the paths of the same user are combined after decorrelating. This method utilizes equivalent spreading codes for decorrelating, thus the hardware complexity is reduced.

关 键 词：多用户检测 解相关 频率选择性 衰落信道 CDMA 

分 类 号：TN929.533[电子电信—通信与信息系统]