综合业务的CDMA系统的业务容量分析

个人通信与移动计算的发展促进了将综合业务引入移动通信中。ＣＤＭＡ系统是新一代传输综合业务的系统。本文采用一种业务接入控制算法，分析了综合业务的ＣＤＭＡ系统的业务容量。显见，在计算综合业务的ＣＤＭＡ系统容量时，所需的Ｅｂ／Ｉ０、速率Ｒ及激活因子大的业务对系统容量的影响大。同时在上行信道中，非理想功率控制对Ｅｂ／Ｉ０、Ｒ及激活因子大的业务的容量影响也较大。为此，可以对不同的业务置以不同的功率调整步长来减小这种影响。

Reception Algorithm Combining Diversity and Multiuser Blind Equalization in CDMA System

Intersymbol interference (ISI) and multiaccess interference (MAI) are two major impairments on the performance of CDMA systems. In this paper, we propose an approach combining diversity and adaptive multiuser blind equalization to combat both of them. Focusing on an adaptive centralized decision feedback structure, we have proved the convexity of the cost function, which is also tested by numerical simulations for multipath Rayleigh fading channel.