Analysis and Research of Modulation Recognition Algorithm in Satellite Communications

Abstract:

Automatic identification of the communication signal modulation mode is a hot topic of research in the signal processing field in recent years. It is an important part of electronic countermeasures, and also a rapidly developed field of signal analysis. Communication signal modulation recognition is widely used in signal confirmation, interference identification, radio listening, signal monitoring, as well as software-defined radio, satellite communications and other fields. This paper proposed a digital modulation signal automatic recognition algorithm for satellite communication applications,. The algorithm uses the higher order cumulants of modulating signal, combined with constellation map features, to classify the signal. It has invariance in signal amplitude and phase deviation, and inhibits the additive Gaussian noise at the same time. Compared with other identification algorithms, it has the characteristics of stability and wide application. Computer simulations show that, under the given data length and moderate SNR conditions, a higher recognition rate (> 95%) can be obtained.

• Periodical: Advanced Materials Research (Volumes 756-759)
• Pages: 1961-1967
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.756-759.1961
• Online since: September 2013
• Authors: Ren Bin, Zhu Ping, Cheng Ying, Song Lei
• Keywords: Automatic, Modulation Recognition Algorithm, Satellite Communications, Signal

References

[1] Wang Bingjun, Wang Shaoyong, Tian Baoyu, et al. Modern Satellite Communication System [M]. Beijing: Electronics Industry Press, (2004).

[2] Guo Shuangbing. Research on Feature Extraction Method of Modulation Signal Based on Wavelet and Fractal Theory[J]. Signal Processing 2005, 21 ( 3 ) : 316-318.

[3] Song Chengsen. The Digital Communication Signal Modulation Recognition and Parameter Estimation [D]. Zhejiang University, 2006, 5: 42-45.

[4] Gu Xuemai, Ding Nan. Research on Automatic Identification Algorithm of Digital Modulation Commonly Used in Satellite Communication [J]. Journal of Harbin Institute of Technology, 2007, 30 ( 1 ) : 93-96.

[5] Li Jiandong, Feng Yang. The Modulation Recognition Algorithm Based on Support Vector Machines and Cyclic Cumulants[J]. SystemS Engineering and Electronic Technology. 2007, 29 ( 4 ) : 520-523.

[6] Han Guodong, Wu Jiangxing. Spectral Method of Modulation Parameter Extraction [J]. Aerospace Electronic Warfare 2001, V01. 3: 37-41.

[7] Yao Yafeng, Huang Zailu. The Communication Signals Modulation Recognition Technology. Communication Technology, 2003, V01. 6: 41-43.