一种快速DSSS/QPSK信号检测方法

A Fast Detecting Method of DSSS/QPSK Signals

针对DSSS/QPSK扩频通信的非协作检测问题,研究提出了一种基于时域分析处理的检测方法,该方法基于DSSS/QPSK信号的基本特征,通过对接收到的信号在时域做简单的延迟相乘处理与自相关分析完成对信号的检测和实现对DSSS/QPSK扩频系统重要参数信息码周期的估计.计算机仿真模拟结果显示,文章所建议方法简单有效,可操作性强,它的提出应用对于DSSS/QPSK通信的非协作检测来说有一定的参考意义.

For the non-cooperative detection of the DSSS/QPSK communication,the paper proposes a time-domain-processing-based method for the detection of DSSS/QPSK signals.The proposed method,starting with the basic structure character of the DSSS/QPSK signals,achieves the detection of DSSS/QPSK signals and the estimation of the information symbol period by doing delay-multiply,correlation on the received signals.The computer simulations show that the proposed method is feasible and efficient,and the proposal & its application have a certain referential importance for the non-cooperative detection of the DSSS/QPSK communication.