一种空时盲RAKE接收机

A Space-Time Blind RAKE Receiver

多用户检测和阵列天线是直扩码分多址系统中两种减轻多址干扰的关键技术 ,将两者结合起来的空时处理能大大提高系统的容量和性能。设计了一种空时盲RAKE接收机。研究结果表明 ,这种空时盲RAKE接收机具有较强的抑制多址干扰以及克服多径效应和“远近”效应的能力 ,并且能快速收敛。

Multiuser detection and array antenna are two key techniques reducing the effect of multiple access interference(MAI) in DS CDMA. Space time processing which combines these two methods can improve the performance and capacity of the system greatly. In this paper,a novel space time blind RAKE receiver is proposed. With numerical simulations and performance analysis, it is shown that the receiver precedes the conventional space time 2 dimensional RAKE receiver in eliminating MAI and resisting multipath and 'near far' effects. Furthermore,the adaptive version of the receiver can converge rapidly.\;