本课题主要是对DS-CDMA系统理论的研究和基于MATLAB的仿真设计，包括：

1、首先对CDMA系统原理进行了研究，了解了系统的工作过程，为系统的设计奠定基础；

2、对CDMA的关键技术及性能特点进行详细的分析和讨论；

3、在上述研究工作的基础上，提出DS-CDMA的总体设计方案，包括从信源到信宿的各模块设计，并详细地分析了整个系统的工作原理。

4、运用MATLAB动态SIMULINK模块进行仿真设计，通过仿真结果来验证和分析DS-CDMA系统中各模块的性能。-The main topic is the study of DS-CDMA system theory and MATLAB simulation-based design, including: a first principle of CDMA systems have been studied to understand the working process of the system, to lay the foundation for the design of the system　2, CDMA The key technology and performance characteristics of a detailed analysis and discussion　3, based on the above research work on the proposed DS-CDMA overall design, including the modular design from the source to the sink, and a detailed analysis of the entire system works. 4, using MATLAB SIMULINK dynamic simulation module design, through simulation results to validate and analyze the performance of DS-CDMA system, each module.