基于谱特征的模拟与数字调制方式识别方法  

Automatic classification for analogue and digital modulation based on spectrum feature

作　　者：包锡锐[1] 吴瑛[1] 

机构地区：[1]解放军信息工程大学通信工程系,河南郑州450002

出　　处：《计算机工程与设计》2008年第14期3569-3571,3576,共4页Computer Engineering and Design

摘　　要：提出一种基于谱特征的模拟与数字调制方式自动识别算法,从信号的包络平方谱中提取单频分量检测值作为特征参数,对模拟与数字调制方式进行自动分类。仿真结果表明,在信噪比大于3dB时识别率达99%以上。该算法不需要先验知识,计算简单,对数字调制信号的滚降系数不敏感,具有较强的实用性。An automatic recognition algorithm between analogue and digital modulation signals based on spectrum feature is introduced. The detecting value of single frequency which is extracted from the power spectrum of the second power of the signal＇s envelop is as cha- racter parameter, and then automatically recognize analogue and digital modulation, Simulation results show that this method can achieve more than 99% classification accuracy when SNR is above 3 dB. This scheme needn＇t any prior knowledge, and it is easy to be realized. It is not sensitive to the roll-off factor of the digital modulation signals and has the good practicability.

关 键 词：自动调制识别 谱特征 脉冲成形 特征提取 单频分量 

分 类 号：TN911[电子电信—通信与信息系统]