journal6 ›› 2007, Vol. 28 ›› Issue (2): 67-70.

• 物理与电子 • 上一篇    下一篇

基于LDPC编码的水声OFDM系统设计

  

  1. (北京邮电大学无线新技术研究所,北京 100876)
  • 出版日期:2007-03-25 发布日期:2012-06-18
  • 作者简介:温娜(1978-),女,黑龙江齐齐哈尔人,北京邮电大学无线新技术研究所博士生,主要从事信道编码和OFDM等无线通信技术研究.

Design of LDPC Coded OFDM System for Underwater Acoustic Channel

  1. (WTI of University of Posts and Telecommunications,Beijing 100876,China)
  • Online:2007-03-25 Published:2012-06-18

摘要:水声信道是目前通信环境中最为恶劣的信道,只有采用强有力的调制编码方式才可能实现高速可靠的通信.笔者提出了一种水声LDPC-OFDM系统设计方案,采用LDPC码进行纠错,并用一个均衡器消除多普勒频移引发的载波间干扰,从而提高通信质量.仿真结果表明该方案能够得到理想的增益.

关键词: 水声信道, 低密度校验码, 正交频分复用, 均衡

Abstract: Underwater acoustic channel is the most complex channel in all of the communication channels.Strong modulation and coding mode must be applied in such system.A LDPC coded OFDM system scheme for underwater acoustic channel is proposed.The authors adopt LDPC codes to correct the errors and eliminate the interference carrier interruption with an equalizer further.Simulation results validate its good performance.

Key words: underwater acoustic channel, low density parity check code, orthogonal frequency division multiplexing, equalizer

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