中国邮电高校学报(英文版) ›› 2017, Vol. 24 ›› Issue (3): 1-6.doi: 10.1016/S1005-8885(17)60205-X

• Artificial Intelligence •    下一篇

GMSK iterative carrier recovery for AIS burst-mode

陆茜文 罗义军  Li Jie   

  1. 武汉大学电子信息学院
  • 收稿日期:2016-12-16 修回日期:2017-03-30 出版日期:2017-06-30 发布日期:2017-06-30
  • 通讯作者: 陆茜文 E-mail:535449161@qq.com

GMSK iterative carrier recovery for AIS burst-mode

  • Received:2016-12-16 Revised:2017-03-30 Online:2017-06-30 Published:2017-06-30
  • Contact: Xi WenLu E-mail:535449161@qq.com

摘要: In this paper, an iterative carrier recovery algorithm of Gaussian filtered minimum shift keying (GMSK) in burst-mode was designed. The data utilization rate and precision of the traditional demodulation method for recovering carrier signal in burst data packet with limited-length is poor. In order to solve this problem, this paper proposed an iterative carrier recovery algorithm. This algorithm can improve the estimated precision of carrier recovery and data utilization rate of burst data packet in a large extent by performing multiple forward and backward iterations. And the algorithm can be implemented in Simulink environment. As the communication mode of automatic identification system (AIS) is abrupt, the algorithm is especially suitable for satellite-based AIS.

关键词: GMSK, iteration, carrier recovery, AIS, burst signal

Abstract: In this paper, an iterative carrier recovery algorithm of Gaussian filtered minimum shift keying (GMSK) in burst-mode was designed. The data utilization rate and precision of the traditional demodulation method for recovering carrier signal in burst data packet with limited-length is poor. In order to solve this problem, this paper proposed an iterative carrier recovery algorithm. This algorithm can improve the estimated precision of carrier recovery and data utilization rate of burst data packet in a large extent by performing multiple forward and backward iterations. And the algorithm can be implemented in Simulink environment. As the communication mode of automatic identification system (AIS) is abrupt, the algorithm is especially suitable for satellite-based AIS.

Key words: GMSK, iteration, carrier recovery, AIS, burst signal

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