J4 ›› 2011, Vol. 38 ›› Issue (4): 61-65.doi: 10.3969/j.issn.1001-2400.2011.04.011

• 研究论文 • 上一篇    下一篇



  1. (西安电子科技大学 综合业务网理论及关键技术国家重点实验室,陕西 西安  710071)
  • 收稿日期:2010-06-17 出版日期:2011-08-20 发布日期:2011-09-28
  • 通讯作者: 赵亮
  • 作者简介:赵亮(1977-),男,博士,E-mail: zhl@xidian.edu.cn.
  • 基金资助:


Joint iterative equalization and decoding for underwater acoustic coherent communication systems

ZHAO Liang;GE Jianhua   

  1. (State Key Lab. of Integrated Service Networks, Xidian Univ., Xi'an  710071, China)
  • Received:2010-06-17 Online:2011-08-20 Published:2011-09-28
  • Contact: ZHAO Liang



关键词: 水声通信, 串行级联网格编码调制, 自适应判决反馈均衡, 联合迭代均衡和译码


Serially concatenated trellis coded modulation (SCTCM) technology is adopted to improve the bandwidth efficiency of the underwater acoustic channel. In order to overcome multi-path fading and eliminate inter-symbol interference (ISI), the turbo theory is applied to form the joint iterative multi-channel adaptive decision feedback equalizer (MC-ADFE) and decoder of SCTCM. In the joint iterative equalization and decoding (JIED) algorithm, the MC-ADFE and decoder of SCTCM exchange soft information in an iterative manner, which can enhance the equalizer performance using the significant decoding gain. Simulation results show that the proposed system scheme can improve the performance of the equalizer and lead to a considerable coding gain. So, the performance of the underwater acoustic communication system has been improved greatly.

Key words: underwater acoustic communication, serially concatenated trellis coded modulation (SCTCM), adaptive decision feedback equalizer, joint iterative equalization and decoding algorithm (JIED)


  • TN911.7,TN929.3