通信信号数字调制方式自动识别算法研究

Automatic Digital Modulation Recognition Algorithm of Communication Signals

自动调制识别是非协调通信系统接收机设计中的重要研究课题,该文针对工程中的应用提出了一种调制识别算法。与已有的算法相比,该算法结构简单,计算量小,适合实时计算,而且在低信噪比环境下有较高的识别准确度;同时考虑了符号成形对参数提取的影响,更能满足工程上的需要。

Automatic modulation recognition is an important research area for the receiver design in the non-cooperative communication system. A digital modulation recognition algorithm is proposed in this paper for the engineering application. Contrast to other algorithm, this one is very simple to be calculated on-line and it also has a good recognition rate in the low SNR environment, furthermore the effect of symbol shape to the parameter extraction has been considered, which can satisfy the need of engineering.