Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (6): 1303-1306.

• 电子技术 • 上一篇    下一篇

卫星通信中调制识别算法研究

黄英, 雷菁   

  1. 国防科技大学电子科学与工程学院, 湖南, 长沙, 410073
  • 收稿日期:2008-03-07 修回日期:2008-04-28 出版日期:2009-06-20 发布日期:2010-01-03
  • 作者简介:黄英(1978- ),女,讲师,博士研究生,主要研究方向为调制识别,信道编码等.E-mail:Inform_huang@sina.com

Research on recognition of modulation signals in satellite communication

HUANG Ying, LEI Jing   

  1. Coll. of Electronic Science and Engineering, National Univ.of Defense Technology, Changsha 410073, China
  • Received:2008-03-07 Revised:2008-04-28 Online:2009-06-20 Published:2010-01-03

摘要: 针对卫星通信这一应用场合,提出了一种数字调制信号自动识别算法。该算法利用调制信号的高阶累积量,并结合星座图特征,对信号进行分类。它对信号的幅度、相位偏差具有不变性,同时可抑制加性高斯噪声;与其它识别算法比较,它具有稳健、应用广泛的特性。通过计算机仿真表明,在给定的数据长度和中等信噪比条件下,可得到很高的识别率(>95%)。

Abstract: An automatic recognition algorithm of digital modulation signals in satellite communication is presented,which connects high order cumulants with constellation characters.It is invariant with respect to difference of amplitude and phase,and it can suppresses white additive Gaussian noise.Compared with the existing algorithms,it is robust and widely usable.Computer simulations show that application of this algorithm in a medium signal-to-noise ratio with a specified sample size results in the high probability of correct identification(>95%).

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