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自适应增益LMS的盲多用户检测算法
引用本文:李星,孙广富,欧钢. 自适应增益LMS的盲多用户检测算法[J]. 信息技术, 2008, 32(1): 38-40,44
作者姓名:李星  孙广富  欧钢
作者单位:国防科技大学卫星导航研发中心,长沙,410073
摘    要:研究了一种工作于CDMA系统的盲多用户检测算法--自适应增益LMS,推导了算法实现的步骤.仿真实验表明,该算法相对于传统的LMS盲多用户检测算法,大幅度提高了收敛速率和稳态输出信干比,大大增强了适应非平稳信道的能力.另外,该算法运算量远远低于多用户检测中的盲RLS和Kalman滤波算法,非常适合于硬件实现.

关 键 词:CDMA  盲多用户检测  自适应增益LMS  自适应  增益  盲多用户检测算法  gain  adaptive  multiuser detector  blind  硬件实现  滤波算法  Kalman  运算量  能力  平稳信道  增强  输出信干比  稳态  收敛速率  仿真实验  算法实现  系统
文章编号:1009-2552(2008)01-0038-03
收稿时间:2007-09-04
修稿时间:2007-09-04

A novel blind multiuser detector using adaptive gain LMS
LI Xing,SUN Guang-fu,OU Gang. A novel blind multiuser detector using adaptive gain LMS[J]. Information Technology, 2008, 32(1): 38-40,44
Authors:LI Xing  SUN Guang-fu  OU Gang
Affiliation:LI Xing,SUN Guang-fu,OU Gang (Satellite Navigation Research Center,National University of Defense Technology,Changsha 410073,China)
Abstract:A new blind adaptive detector using adaptive gain LMS is designed in this paper. The computational complexity of this algorithm is only a little more than LMS, but it performs very well in the convergence rate and output signal-to-interference rote both in the AWGN and Rayleigh channel. The major impediment in using RLS and Kalman algorithm is their computational complexity. So the proposed algorithm can be a good substitution of them in the hardware implementation.
Keywords:CDMA   blind muhiuser detector   adaptive gain LMS
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