摘要
CDMA系统的性能很大程度上受多用户干扰影响。多用户检测是抑制多用户干扰的有效方法。文中介绍一种基于可变禁忌长度的多用户检测方法。该方法以传统匹配滤波器的判决输出为初始解,采用禁忌长度可变的禁忌搜索(TS)算法,使禁忌长度与搜索空间的崎岖程度相适应,以避免搜索限入局部最优。仿真实验证明,该方法具有较好的误比特性能和抗远近效应能力,并具有多项式复杂度。
The performance of CDMA system is deeply influenced by multi-user interference. Multi-user detection（MUD） is proved to be an effective method to restrain such interference. In this study, we propose a Tabu Search（TS） algorithm for multi-user detection in CDMA system, where an alterable tabu length is used to ensure the tabu table is adaptive to the search landscape and to avoid local optimum. Simulation shows that this MUD method is good on BER, anti-near-far as well as computational complexity performance.
出处
《信号处理》
CSCD
北大核心
2005年第4期389-391,共3页
Journal of Signal Processing
基金
教育部科学技术重点项目(2000114)重庆市科委基金项目(2003-7881)
