多速率CDMA系统自适应接收机  

Adaptive Receiver for Multi-rate CDMA System

作　　者：陈致樑[1] 尹俊勋[1] 杨东林[1] 

机构地区：[1]华南理工大学电子与通信工程系,广州510641

出　　处：《通信技术》2001年第9期94-96,共3页Communications Technology

摘　　要：随着移动通信的发展,多速率数据通信业务越来越多。第三代移动通信系统能够支持可变服务质量的不同数据速率业务。因此,多速率接收机的研究也越来越引起重视。多速率系统中,当干扰信号具有不同速率参数时,不同用户的周期平稳性不同,单速率自适应FIR接收机的性能会严重下降。提出了一种适合于多速率多址干扰下的自适应滤波器组接收机,仿真结果表明,自适应滤波器组接收机能够更有效地消除多种模式的多址干扰,比单速率接收机具有更好的性能。Providing a wide range data rates wit h variable quality of service is the r equirement of 3G systems.In such systems,the cyclo -stationary properties of the signals of the different users in the system are different,resulting a single FI R filter yields a highly degraded performance.In this paper,we derive th e optimal receiver structure for a mul ti -rate CDMAsystemand showit to be a bank of transversal filters.Simu-lation results are provided to demon strate that the bit error rate performance gain is obtained with an adaptive filter bank receiver over an adaptiv e single filter receiver.The derivation and extensive performance investiga-tion of the optimum structure for a mu lti -rate system constitute original contributions of this paper.

关 键 词：速率 移动通信 码分多址 自适应接收机 多用户检测 

分 类 号：TN929.533[电子电信—通信与信息系统]