北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2010, Vol. 33 ›› Issue (1): 129-134.doi: 10.13190/jbupt.201001.129.224

• 研究报告 • 上一篇    

水声信道的D-SCCC级联编码仿真

郭淑霞1；刘冰1；高颖2；黄国栋2   

  1. (1.西北工业大学 无人机特种技术国家重点实验室, 西安 710065; 2.西北工业大学 航海学院, 西安 710072)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-02-28 发布日期:2010-02-28
  • 通讯作者: 郭淑霞

Simulation Research of D-SCCC Based on Underwater Acoustic Communication

GUO Shu-xia1；LIU Bing1；GAO Ying2；HUANG Guo-dong2   

  1. (1.National Key Laboratory of Science and Technology on Unmanned Aerial Vehicles, Northwestern Polytechnical University, Xi’an 710065, China; 2.College of Marine Engineering, Northwestern Polytechnical University, Xi’an 710072, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-02-28 Published:2010-02-28
  • Contact: GUO Shu-xia

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摘要：

论述了应用于水声通信的双串行级联编码（D-SCCC）技术；针对水声通信在某些应用场合高可靠性要求，通过对误码率（BER）的分析，提出了提高水声通信可靠性的编码设计方法，并在给定的水声信道下进行了仿真. 仿真结果表明，相同码率下双串行级联编码与SCCC算法相比，BER瀑布区陡度增大，在BER为10-5时有05dB的编码增益；相同码率下SCCC算法与Turbo码相比，可有效改善Turbo码BER在10-4～10-5出现的错误平层，满足了水声通信传输遥控与遥测指令时的高可靠性需求.

关键词: 水声信道, 双串行级联编码, 错误平层

Abstract:

The double-serially concatenated convolutional codes (D-SCCC) method applied in underwater acoustic communication system was studied. In view of the acoustic communication’s requirement of high reliability, a new coding method was proposed to improve the reliability of communication through analyzing bit error rate (BER), and a simulation based on a given underwater channel has been made. Simulations show that at the same bit rate DSCCC increases the waterfall area’s steepness of BER compared with SCCC and has 0.5dB coding gain in the BER of 10-5, and D-SCCC improves error-floor of Turbo code’s BER when BER is between 10-4 and 10-5. This can satisfy requirement of high reliability when the underwater acoustic transmits remote measurement and remote-controlled commands.

Key words: underwater acoustic channel, double-serially concatenated convolutional codes, error-floor

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