经符号成形的数字信号调制制式识别  

Modulation Recognition of Symbol Shaped Digital Signals

作　　者：黄付庆[1] 程剑俐[1] 徐以涛[1] 任国春[1] 

机构地区：[1]解放军理工大学通信工程学院

出　　处：《电子信息对抗技术》2008年第3期12-17,共6页Electronic Information Warfare Technology

摘　　要：提出了一种对经过符号成形的调制信号进行识别的新算法,利用特征参数提取与决策树分类器相结合对8种常用数字信号进行调制识别。首先详细介绍了符号成形对调制信号及信号瞬时参数提取的影响,然后选取特征参数通过决策树分类器进行识别分类,最后进行了计算机仿真,仿真表明该算法能够有效识别经符号成形的数字信号,且与无符号成形的数字信号调制识别方法相比,有着更好的识别性能。A new recognition algorithm to the signals symbol shaped is presented. Eight modulation types are classified by the method based on characteristic parameters extraction and decision-tree classifter. Firstly, the infection to signals and parameters extraction aroused by symbol shape is introduced in detail. Then the modulation types are classified from the feature parameters and the decisiontree classifier. Lastly, the computer simulation results show that the algorithm has a good recognition performance for the signals shaped, further more it has a better recognition performance than the methods without consideration of the symbol shape.

关 键 词：调制识别 符号成形 特征参数提取 决策树分类器 

分 类 号：TN911.72[电子电信—通信与信息系统]