基于Kalman滤波的多用户检测算法  

Multiuser detection algorithm based on kalman filtering

作　　者：付裕盛[1] 杨莘元[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《应用科技》2007年第1期28-30,共3页Applied Science and Technology

摘　　要：研究了码分多址(code d ivision mu ltip le access,CDMA)存在很强的多址干扰(mu ltip le access interference,MAI)时,基于Kalm an滤波的盲自适应多用户检测算法,并与基于LMS,RLS滤波的自适应多用户检测算法相比较.通过仿真实验,可以看出该算法收敛速度快,抑制多址干扰性能好.计算机仿真实验表明,将Kalm an滤波应用到CDMA多用户检测中,能够有效地抑制多用户干扰,并且收敛速度较快,稳定性好.A blind adaptive multi-user detection algorithm is proposed based on Kalman filter under the condition that CDMA system has strong MAI （multiple access interference）. This algorithm is compared with the adaptive muhi-user detection algorithm based on LMS and RLS filtering. It can be seen from the simulation results that the new algorithm converges rapidly, and it has excellent capability of eliminating multiple access interference. Simulation results show that algorithm based on Kalman filtering can eliminate multi-user interference efficiently with rapid convergence and high stability.

关 键 词：CDMA 多址干扰 多用户检测 KALMAN滤波 

分 类 号：TN914.53[电子电信—通信与信息系统]