摘要
在CDMA移动通信系统中,多址接入干扰可以通过多用户检测技术来消除,而分集接收可以减小信道衰落的影响。本文给出了一类应用解相关检测、天线分集、RAKE多径分集技术的接收机,并对这一类接收机的性能做了分析。结果表明,在上行链路中,应用多用户检测和分集接收能够极大地提高接收机的性能。
In CDMA mobile communication systems, multiple access interference can be cancelled by multiuser detection technique. The degradation by channel fading can be reduced by diversity reception. This paper investigates a family of multiuser receivers that combined decor-relating detection,antenna diversity and RAKE multipath diversity. The performances of the multiuser receivers are analyzed. The results demostrate a significant increase in the performances of the receivers by using multiuser detection and diversity reception.
关键词
多用户检测
异步码分多址
信道
移动通信
Multiuser detection, Diversity reception, Asychronous CDMA channel
