基于联合特征参数的卫星单-混信号调制识别研究  

Research on Satellite Single-mixed Signal Modulation Recognition Based on Joint Feature Parameters

作　　者：杨洪娟 时统志 李博 赵楠 王钢[3] YANG Hongjuan;SHI Tongzhi;LI Bo;ZHAO Nan;WANG Gang(School of Information Science and Engineering,Harbin Institute of Technology at Weihai,Weihai 264209,China;Department of Electronic Information and Electrical Engineering,Dalian University of Technology,Dalian 116024,China;School of Electronics and Information Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学(威海)信息科学与工程学院,威海264209 [2]大连理工大学电子信息与电气工程学部,大连116024 [3]哈尔滨工业大学电子与信息工程学院,哈尔滨150001

出　　处：《电子与信息学报》2022年第10期3499-3506,共8页Journal of Electronics & Information Technology

基　　金：国家自然科学基金(62171154,61901137);山东省自然科学基金(ZR2020MF007);广东省空天通信与网络技术重点实验室开放基金(2018B030322004)。

摘　　要：针对卫星通信中单-混信号调制类型识别效率低、准确性差等问题,该文提出一种基于高阶累积量和星座图聚类特性的调制识别算法。首先,根据4,6阶累积量的属性特点构建3个特征参数,以识别多进制相移键控(MPSK)和部分多进制正交幅度调制(MQAM)调制类型,然后结合改进的星座图减法聚类算法分离出剩余调制样式,最后将参数联合,建立决策树分类器进行统一调度。该算法不依赖信号诸多先验信息,具有特征提取参数简单、识别种类多等特点。仿真结果表明,该算法在信噪比(SNR)10 dB下对卫星单-混信号的调制识别率仍能达到90%以上。In order to tackle the problem of single-mixed signal modulation type recognition with low efficiency and poor accuracy in satellite communication,based on clustering characteristics of constellation and high order cumulants,a joint algorithm is proposed.Firstly,three characteristic parameters is constructed with the utilization of the 4th and 6th order cumulants to identify Multiple Phase Shift Keying(MPSK)and partial Multiple Quadrature Amplitude Modulation(MQAM)modulation types,then the improved constellation subtraction clustering algorithm is combined to separate the remaining modulation patterns,At last,the parameters are integrated to establish a decision tree classifier for unified scheduling.By adopting the method of this article,many signals without prior knowledge are unnecessarily required,and meanwhile the proposed approach maintains the characteristics of simple feature extraction parameters and multiple recognition types.The simulation experiments demonstrate that the associated algorithm is still able to achieve the validity of more than 90%,in the circumstance of the satellite single-mixed signals possessing a Signal-to-Noise Ratio(SNR)of 10 dB.

关 键 词：卫星单-混信号 调制识别 高阶累积量 星座图聚类特性 

分 类 号：TN911[电子电信—通信与信息系统]