基于快速独立分量分析的异步多用户检测方法  

The Asynchronous Multi-user Detector Based on Fast Independent Component Analysis

作　　者：董志[1] 黄芝平[1] 唐贵林[1] 刘纯武[1] 张羿猛[1] 

机构地区：[1]国防科技大学机电工程与自动化学院,湖南长沙410073

出　　处：《国防科技大学学报》2010年第6期147-152,共6页Journal of National University of Defense Technology

摘　　要：深入分析了非理想功率控制下异步CDMA多用户接收机的信号特点,推导出了多小区接收信号模型。提出了基于快速独立分量分析(Fast Independent Component Analysis,FastICA)的异步多用户检测方法,该方法具有抗远近效应,抗多址干扰的能力。仿真结果表明:该算法具有迭代次数少、计算量小、多用户分离效果好的优点,非常适合于非理想功率控制下的多用户检测,该方法大大提高了非理想功率控制下多用户接收机的性能。With a deep analysis of the signal characteristics of CDMA receiver on unideal power control instance,the current research deduced the receiving signal model of multi-cell.Furthermore,the research presented the asynchronous multi-user detection method based on FastICA,which is naturally near-far and multiple-access interference resistant.The simulation results show that： this method has less iterative time,small computational complexity and good performance of multi-user detection,which can enhance the capability of multi-user receiver and is very suitable for asynchronous multi-user detection on unideal power control.

关 键 词：非理想功率控制 异步多用户检测 CDMA 快速独立分量分析 

分 类 号：TN911[电子电信—通信与信息系统]