Research on Recognition Algorithm of Digital Modulation by Higher Order Cumulants

被引：12

作者：

Liu Mingzhu ^{[1
]}

Zhao Yue ^{[1
]}

Shi Lin ^{[1
]}

Dong Jingwei ^{[1
]}

机构：

[1] Harbin Univ Sci & Technol, Sch Measurement & Control Technol & Commun Engn, Higher Educ Key Lab Measuring & Control Technol &, Harbin, Peoples R China

来源：

2014 FOURTH INTERNATIONAL CONFERENCE ON INSTRUMENTATION AND MEASUREMENT, COMPUTER, COMMUNICATION AND CONTROL (IMCCC) | 2014年

关键词：

modulation recognition; higher order cumulants; feature parameter; lower computational complexity;

D O I：

10.1109/IMCCC.2014.146

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Modulation identification of communication signals is an important content of wireless communication technology and a hot topic in the research field of the intercepted signal processing. Because the modulation mode is one of the most important characteristics to be used to distinguish various communication signals, in this paper, a new algorithm using feature parameters based on higher order cumulants has been proposed to identify digital modulation signals, which uses the feature of the white Gaussian noise of its greater than second-order cumulants is zero. Based on the analysis of invariant features in cumulant domain of communication signals, the performances of related cumulants have been researched, and at the same time the key cumulants and characteristics of modulation identification have also been determined. The proposed algorithm can identify digital modulation signals of 2ASK, 4ASK, 4PSK, 2FSK, 4FSK and 16QAM effectively under the environment of lower SNR. In addition, the results of simulation show that it can suppress white Gaussian noise effectively and has lower computational complexity and needs less prior information.

引用

页码：686 / 690

页数：5

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