摘要
调制方式是通信信号的重要特征参数之一。在无线电监测领域,信号的调制识别研究具有十分重要的意义。基于某个无线电频谱监测系统,研究了8种模拟、数字信号的自动调制识别算法。针对AM和ASK的区分,设计了基于频谱紧致性的特征参数K;针对FM和FSK的区分,设计了基于频谱凹凸性的特征参数F。这些特征参数很好地解决了以往模拟、数字信号不能较好联合识别的问题,仿真结果表明了该算法的有效性。
The modulation is a key parameter for communication signals. In the field of spectrum management, the study on automatic modulation recognition is a meaningful thing. Based on a radio spectrum monitoring system, this paper studies an automatic modulation recognition algorithm on 8 kinds of analog and digital signals. To distinguish between AM and ASK, the parameter K is designed;and for FM and FSK, the parameter F is designed to distinguish between them. These parameters are good for solving joint recognition on analog and digital modulation. The simulation results show that this algorithm has availability.
出处
《无线电通信技术》
2015年第2期89-91,共3页
Radio Communications Technology
关键词
调制识别
特征提取
决策树
modulation recognition
feature extraction
decision-tree
