一种简化的解相关检测器及其性能分析  

A Simplified Decorrelating Detector and Analysis of Its Performance

作　　者：仲文[1] 程时昕[1] 

机构地区：[1]东南大学无线电工程系,南京210096

出　　处：《通信学报》1999年第8期13-18,共6页Journal on Communications

基　　金：国家高科技 863 项目

摘　　要：基于矩阵求逆的一阶近似提出了一种简化的解相关检测器，当用户间的相关系数较小时，这种检测器可以相当准确地逼近解相关检测器，文中分析了这种检测器的误码率性能。数值结果表明该检测器的性能远优于传统的多用户检测器，具有较好的抗远近性能，与解相关检测器相比，它的复杂度大大降低，使其有可能用于实际的 Ｃ Ｄ Ｍ Ａ 通信系统中。In this paper,we propose a simplified decorrelating detector based on a first order approximation to the inverse of matrix.This detector is fairly approximate to the decorrelating detector when the cross correlation of spreading sequences assigned to each user is low.The bit error rate(BER) performance of this detector is analyzed and the numerical results show that it outperforms the conventional detector.Moreover,its complexity is much lower than that of the decorrelating detector,which makes it possible for implementation in practical CDMA communication systems.

关 键 词：远近效应 多用户检测 解相关检测器 CDMA通信 

分 类 号：TN914.5[电子电信—通信与信息系统] TN911.23[电子电信—信息与通信工程]