这是一个相对完整的直接序列扩频码分多址的通信系统的仿真设计，包括编码，扩频调制，解调和解码等模块，并统括系统性能的仿真，验证了系统设计的可靠性。-This is a relatively complete direct sequence spread spectrum CDMA communications system simulation design, including coding, spread spectrum modulation, demodulation and decoding module, and system simulation including system performance, validate the reliability of system design.