卫星通信信号体系调制识别技术
收稿日期: 2014-01-24
修回日期: 2014-05-06
网络出版日期: 2014-06-16
基金资助
国家自然科学基金(61032004,91338201);国家"863"计划(2012AA121605,2012AA01A503,2012AA01A510)
Modulation Recognition Technology of Satellite Communication Signal System
Received date: 2014-01-24
Revised date: 2014-05-06
Online published: 2014-06-16
Supported by
National Natural Science Foundation of China (61032004, 91338201); National High-tech Research and Development Program of China (2012AA121605, 2012AA01A503, 2012AA01A510)
马兆宇 , 韩福丽 , 谢智东 , 胡婧 , 边东明 , 张更新 . 卫星通信信号体系调制识别技术[J]. 航空学报, 2014 , 35(12) : 3403 -3414 . DOI: 10.7527/S1000-6893.2014.0089
A novel method for automatic modulation recognition in satellite communication is presented based on the high-order cumulants and characteristics of the spectrum, after that the simulation of the high-order cumulants and the spectrum lines of kinds of modulation signal in satellite communication are given and analyzed. A set of robust characteristic parameters for automatic modulation recognition is obtained which is from the high-order cumulants, power spectrum, square spectrum and quartic spectrum of the raised cosine shaping signals. And then, the method to automatic identification of the modulation attend is realized by blind estimation of symbol rates and carrier frequencies of signals without any prior knowledge. Most modulation modes of satellite communication are covered in this method and the identification system of satellite communication modulation is formed initially. The simulation results show that the method can overcome the effects of raised cosine shaping and is promising in satellite communications.
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