无线电工程

介绍了直扩系统的基本原理。针对能够集中体现直接序列扩频(DSSS)信号波形和频域的特征,对时域相关检测法、循环谱检测法、倒谱检测法和高阶累积量检测法进行了深入的分析与研究。采用上述数字信号处理技术分别对DSSS信号进行特征提取的仿真和验证,并给出了每种检测技术的性能及优缺点。

The basic principles of DS system were introduced.In-depth analysis and research results were given on time domain correlation detection method,cyclic spectral detection method,cepstrum detection method and high-order cumulant,so as to reflect the direct sequence spread spectrum (DSSS) for the signal wave and frequency domain feature.The digital signal processing techniques were used on the DSSS signal simulation and verification feature extraction.And the performance of each detection and advantages and disadvantages were given.