摘要
研究了对直接序列扩频通信系统的不同噪声信号干扰能力,通过Simulink仿真软件,建立了高斯信道环境下的直接扩频通信系统以及音频干扰、宽带干扰、梳状干扰以及扫频干扰等噪声干扰的可视化仿真模型。分别在不同干信比条件下,对直接序列扩频通信系统输出误码率进行测试,并与普通通信系统进行对比,得出直扩系统的性能增益。仿真结果表明,所建模型合理,建模方法有效,可用于直扩系统干扰效能分析。
The interference capability of different noise signals for direct sequence spread spectrum communication systems is explored. Through the Simulink simulation software, the direct simulation spread spectrum communication system in Gaussian channel environment and the visual simulation model of noise interference such as audio interference, wideband interference, comb interference and frequency sweep interference are established. The output bit error rate of direct sequence spread spectrum communication system is tested under different ratios of interference power to signal power, and compared with the traditional communication system, the performance gain of the direct spread system is finally obtained. The simulation results indicate that the model is reasonable and the modeling method is effective. It can be used to analyze the interference effectiveness of direct sequence spread spectrum communication system.
引文
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