Alpha稳定分布噪声下的水下通信调制识别  

Modulation Recognition for Underwater Communication Signals in Alpha Stable Distribution Noise

作　　者：葛轶洲 叶蓁[3] 周青[1,2] 林聪仁[3] 齐洁[3] 

机构地区：[1]通信信息控制和安全技术重点实验室,浙江嘉兴314033 [2]中国电子科技集团公司第三十六研究所,浙江嘉兴314033 [3]厦门大学信息科学与技术学院水声通信与海洋技术教育部重点实验室,福建厦门361005

出　　处：《通信对抗》2016年第2期16-19,56,共5页Communication Countermeasures

摘　　要：针对传统调制识别技术在存在着Alpha稳定分布背景噪声的非合作水下通信过程中往往失效的问题,提出了一种基于广义循环谱技术的水声通信信号调制识别方法。该方法提取广义循环累积量作为识别特征参数,并采用支撑向量机算法进行分类,实现了在Alpha稳定分布噪声下的水声通信信号调制识别。仿真和实际的海洋试验结果表明,该识别方法不仅性能明显优于传统方法而且具有较高的识别率。In an Alpha stable distribution noise environment, the traditional methods of digital modulation signals recognition technology has the problems of failure in non-cooperative underwater communication. A recognition method based on generalized cyclic spectrum technique is proposed to solve this problem. This method extracts the recognition characteristic parameters is generalized cyclic cumulant and uses support vector machine （SVM） algorithm as a classifier to achieve underwater signals modulation recognition. Simulation and actual sea trials experimental results show that the proposed method not only has better performance than the traditional recognition methods but also has higher recognition rate.

关 键 词：ALPHA稳定分布噪声 非合作水下通信 调制识别 广义循环累积量 

分 类 号：TN911.3[电子电信—通信与信息系统]