摘要
在DS/CDMA系统中,多用户检测技术可以减小多址干扰和远近效应,但一般情况下,多用户检测总是假设接收机对信道特性已知。本文提出一种慢衰落信道中的有效的联合信道估计和干扰抵消方法,这种方法需要很少的导频符号来进行信道估计,而且实现简单,可以用在快衰落信道中。
In a DS/CDMA system, muhi-user detection can be used to decrease muhi-address interferences and far-near effect. Commonly, it is assumed that the channel state is known to the receiver. In this paper, a valid joint channel estimation and interferences counteract method is proposed, and it needs only little pilot to estimate the channel character and it is simple to realize in fast fading channel.
出处
《微计算机信息》
北大核心
2006年第09X期54-55,共2页
Control & Automation
基金
河南杰出人才创新基金项目:基于CDMA2000-1x的3G实用化基站关键技术研究:项目编号:0421000100
关键词
多用户检测
衰落信道
联合信道估计
DS/CDMA,channei estimation,pilot,fast fading channel.
