本文主要论述了直接序列(DS)扩频通信系统中的软件无线电实现结构.首先从软件无线电的基本概念出发,论述了直接扩频通信系统中采用软件无线电结构的可能性和必要性;其次详细论述了直接扩频通信系统中软件无线电结构的实现形式,包括发射方、接收方的实现结构,扩频编码的同步(包括扩频编码相位的捕获与跟踪)以及多址通信的实现等.对文章中提出的方法进行了计算机模拟试验,结果是令人满意的.

This article discusses the software radio structure of direct sequence spread spectrum system and its performance.At first,we prove the feasibility and necessity of software radio realization in DS system.Secondly our work includes the realized shape of software radio structure both in sending and receiving end,acquisition and tracking of direct spread spectrum sequence and software radio implement of CDMA in DS spectrum system.The result of computer simulation proves the feasibility of our method.