一种新的MPSK信号特征提取方法

摘要

针对MPSK信号的识别问题,提出了一种依据基带信号相位空间聚类提取码元序列的方法.基带信号相位空间聚类是宏观特征,对参数估计精度要求不高,受噪声影响较小,与传统依据参数估计提取码元序列的方法相比,不需要进行码元速率估计和码元对准,是一种简单有效的码元序列提取方法.仿真实验证明了该方法的有效性.%Aimed at the recognition of MPSK signal, a novel algorithm is proposed for extracting symbol series based on phase clustering of baseband signal. The phase clustering of baseband signal is a macrofeature, which does not require high estimation accuracy of the parameters, and is influenced less by noise. Compared with traditional method for extracting symbol series using parameter's estimation, the presented method is simple and effective, which has no need of symbol rate estimation and symbol alignment. The simulation results prove the effectiveness of the method.