盲信号分离空时多用户检测器及仿真

Blind Signal Separation Combined Space-Time Multi-user Detector and Simulation

提出了一种利用盲信号分离技术(BSS)与阵列天线相结合的新的盲空时多用户检测器。利用基于高阶累积量快速定点的独立分量分析(ICA)算法,从CDMA系统的多址干扰信号中较好分离出需要用户信号和多址干扰信号,进而通过匹配滤波检测出需要的用户信号。该检测器具有结构简单,具有较好的抑制多址干扰和抗“远-近”效应能力,而且收敛速度快。

A novel multi-user detector using blind signal separation combined array antenna is proposed in this paper , which is based on high-order cumulant fast fixed-point algorithm of ICA, It can preferably separate multi-user signal of CDMA, and then detects useful signal by match-filter. This structure of detector is simple but it preferably eliminates MAI and near-far resistant. Furthermore it can converge rapidly.