基于反相对称法的直扩通信解调方式研究

Spectrum communication mode based on phase-inversion symmetric method

同样的通信系统,不同的解码方式对系统的复杂度和成本以及通信质量的影响是不一样的。提出了在直接序列扩频通信中应用反相对称法编解码时一种不同的解码方式,并与传统的编解码方式进行了MATLAB建模仿真,理论分析和仿真结果表明该方式在小信噪比的情况下明显优于传统方式。

For the same communications system,different decoding way generates different influence for the complexity,cost and communication quality of the system.This paper puts forward a different demodulation way of the direct sequence spread spectrum communication system based on phase-inversion symmetric method,and establishes the MATLAB model and carries on the simulation.Comparing with the traditional demodulation way,the results show that the new demodulation way is evidently better than the traditional way in small SNR cases.