编码扩频通信系统中非相干解调技术研究

Study on Noncoherent Demodulation in Coded-Spread Spectrum Communication System

为满足当前信息技术高速、安全、可靠通信的要求 ,对基于编码扩频的 DS/FH(直序 /跳频 )混合扩频通信系统中非相干解调技术进行了研究 ,简要分析编码扩频信号的组成 ,重点讨论数据解调时采用的非相干最大相关输出解调方案及其误码特性 ,并与其它通信系统的通信性能进行对比。

The technique of noncoherent demodulation in DS/FH hybrid communication system based on coded-spread spectrum is considered to satisfy the communication requirements of high-speed?security and reliability in the information technology fields. The structure of the coded-spread spectrum signal is analyzed in brief, and the scheme of noncoherent maximum correlation output demodulation adopted in data demodulation is discussed.Compared with other communication's performance, the bit error performance of the technique is further treated. Simulation of the system further proved the feasibility of the project.