一种改进的变步长LMS盲多用户检测算法  

An Improved Variable Step-size LMS Blind Multi-user Detection Algorithm

作　　者：井敏英[1,2] 李国民[1] 魏丁武[3] 

机构地区：[1]西安科技大学通信与信息工程学院,陕西西安710054 [2]陕西理工学院物理系,陕西汉中723001 [3]中国人民解放军68054部队,陕西西安710061

出　　处：《通信技术》2009年第7期13-14,90,共3页Communications Technology

摘　　要：盲多用户检测技术是第三代移动通信的关键技术,文中分析了DS-CDMA通信系统中LMS盲多用户检测算法的性能。并在此基础上对其进行改进,提出一种改进的变步长的LMS盲多用户检测算法,仿真结果表明,该改进算法与已有算法相比性能相当,但计算量减小。Blind multi user detection is the key of 3G mobile communication. In this paper, the performances of LMS blind multi-user detection algorithm in DS-CDMA communication system is analyzed, and some improvements on the algorithm are done, finally an improved LMS blind multi-user detection algorithm with variable step size is proposed. Computer simulations show that the performance of the improved algorithm is identical with that of the existing variable step size algorithm, and however, the calculation amount of the improved algorithm is less than that of the existing variable step size algorithm.

关 键 词：最小均方(LMS)算法 盲多用户检测 最小输出能量 

分 类 号：TN911.23[电子电信—通信与信息系统]