学习扩频通信系统技术理论基础及直接序列DS扩频系统基本原理，并设计出直扩通信系统模型。此基带通信系统具体包括信源模块、、数据调制模块、扩频码产生模块、扩频模块、信道模块、解扩模块、解调模块，并在AWGN信道下对系统进行性能仿真研究。(Wireless communications is vulnerable to jamming attacks due to the shared use of wireless medium. A jammer can simply take advantage of a radio frequency (RF) device (e.g., a waveform generator) to transmit signals in the wireless channel.)