直扩系统抗单音干扰性能分析

Analysis of Monotone Interference Performance of Direct-spreading System

直接序列扩频技术通过将信号带宽扩展达到抗干扰、抗截获等目的,在卫星通信、军事战术通信上具有重要的意义。论文通过建立扩频通信系统,对扩频通信系统在单频正弦波干扰下误码率随信噪比的变化关系进行仿真。仿真结果表明,采用扩频方法能提高通信系统的信噪比,同时能一定程度上抑制通信系统中的单音干扰。

Direct sequence spread spectrum technology has important significance in satellite communication and military tac tical communication by extending the signal bandwidth to achieve anti-interference and anti-interception.In this paper,by estab lishing a spread spectrum communication system,the relationship between the bit error rate and the signal-to-noise ratio of the spread spectrum communication system is simulated under single-frequency sine wave interference.The simulation results show that the spread spectrum method can improve the signal-to-noise ratio of the communication system and suppress the single-tone in terference in the communication system to some extent.