利用训练序列进行无线信道响应的低价估计  

作　　者：张福新[1] 季建峰[1] 楼建东[1] 

机构地区：[1]郑州解放军信息工程大学

出　　处：《微计算机信息》2005年第5期192-193,共2页Control & Automation

基　　金：国家自然科学基金60172029

摘　　要：蜂窝CDMA移动通信系统接收机中的最优信号处理需要通过嵌在发射信号中的训练信号来估计实际信道的冲激响应。在CDMA移动通信系统中上行信道的许多估计方法虽然有很多优点但是成本很高。本文提出并分析了一种信道估计方法,其中所有用户的不同训练信号由同一基本信号的不同移位构成。因此实现了一个相关器形式的低成本信道估计器。Optimum signal processing in the receiver of cellular CDMA mobile radio systems requires the estimation of the actual channel impulse response on the basis of the training signals which are embedded into the transmitted signal. Many channel estimation in the case of the uplink, in which a different training signal is needed for each user turns out that the application is expensive . In this paper, a channel estimation method is proposed and analyzed in which the different training signals of all users are time displaced versions of one and the same basic signal. Thus a low cost realization of the channel estimator in the form of correlator becomes possible.

关 键 词：CDMA 训练序列 信道估计 

分 类 号：TN929.5[电子电信—通信与信息系统]