期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：252
期号：3
页码：1-17
DOI：10.1088/1755-1315/252/3/032031
出版社：IOP Publishing
摘要：Automatic modulation recognition (AMR) has become an interesting problem in communication systems with various civil and military applications. The modulation recognition method based on quartic spectrum will degrade seriously in the Alpha-stable distribution noise. To solve this problem, ageneralized transform is proposed in this paper, based on which, a new modulation recognition method of MPSK is investigated. First, generalized quartic spectrums of signals are analyzed. Thenthe method extracts spectrum lines of two times carrier frequency and four times carrier frequency in generalized quartic spectrum as the feature parameters. Finally the method realizes the recognition of signals through judging whether spectrum lines are impact spectral lines or not. Experimental results show that the novel method has good performance in both Alpha-stable distribution noise and Gaussian noise, and it is less affected by characteristic exponent of noise ranging from 1 to 2.
