WCDMA HSDPA的可用性及其改进方案研究

The Research of WCDMA HSDPA's Usability and the Ameliorating Scheme

证明了HSDPA缺乏技术理论基础,利用现有的CDMA基本原理无法实现HSDPA给多个用户同时提供高速数据和语音业务的应用要求。同时给出一种可行的利用码分多址/时分多址实现HSD-PA的方法,而且系统的复杂性增加较少,只需使用最易实现的干扰抵消器,它将用于消除一条TD-MA高速数据信道产生的自干扰。这种方法可改进WCDMA标准上下行容量基本对称的技术缺陷,使其符合移动因特网的需求。

This paper proves that HSDPA is short of theoretical basis so that HSDPA＇s application requirements of simultaneously providing high rate data and voice service for multiple users cannot be met based on the current CDMA fundementals.A feasible CDMA/ TDMA scheme is proposed to support HSDPA with less complexity of the system and the easiest-to-implement interference eliminator used to eliminate the self-interference made by one TDMA high rate data channel.This manner can improve the technical defects in WCDMA standard whose downlink＆uplink capacity are generally symmetric,therefor,the requirements of mobile internet can be met.