基于第二代小波变换的数字调制自动识别  

Digital Modulation Automatic Recognition Based on Signal’ Second Generation Wavelet

作　　者：闫朋展[1] 王振宇[1] 

机构地区：[1]解放军电子工程学院

出　　处：《通信对抗》2011年第3期20-22,27,共4页Communication Countermeasures

摘　　要：针对数字信号调制模式识别问题，提出了一种新的识别算法。该算法通过对数字信号进行第二代小波分解，利用分解得到的各层细节系数标准差作为分类特征，来实现待识别信号的分类。仿真结果表明，该算法在低信噪比下具有较高的识别率，且识别性能明显优于文章参考文献采用的第一代小波（包）变换识别算法。A new recognition algorithm is proposed for digital signals＇ modulation recognition. Using each level of detail coefficients which are obtained by second generation wavelet, this algorithm extracts classification features, then identifies digital modulation signals. The simulation results show this method has good performance in the automatic modulation recognition in low SNR and has higher recognition rate compared with the algorithms in the literature.

关 键 词：调制模式识别 第二代小波变换 细节系数 标准差 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]