摘要
研究了直扩—码分多址(DS-CDMA)系统中多址干扰(MAI)抑制技术的盲多用户检测算法,在加性高斯白噪声信道环境中,对该检测的最小均方(LMS)算法、递归最小二乘(RLS)算法及卡尔曼滤波算法的信干比及抗干扰性能通过计算机编程仿真进行了分析、研究,提出了一种改进型盲多用户检测LMS算法,并对其信干比及抗干扰性能用Matlabl语言进行了计算机编程仿真,仿真结果表明:改进型盲多用户检测LMS算法的信干比(SIR)稳态输出明显好于基本LMS算法。
This paper studies a blind multi-user detection algorithm of multi-access interference （MAI） suppression techniques in direct-sequence code division multiple access （DS-CDMA） system,and under the additive white Gaussian noise （AWGN） channels mode,analyzes and studies the signal to interference ratio （SIR） and anti-interference performance （AIP） of least-mean-square （LMS） algorithm,recursive least square （RLS） algorithm and Kalman filter algorithm unsed in this detection through computer simulation and programming,puts forward an improved blind multi-user detection LMS algorithm,and makes computer simulation and programming for its SIR and AIP by using Matlabl language.The simulation results show that the steady-state output of improved blind multi-user detection LMS algorithm is obviously better than that of basic LMS algorithm.
出处
《科技情报开发与经济》
2010年第35期153-157,共5页
Sci-Tech Information Development & Economy
