北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2000, Vol. 23 ›› Issue (4): 84-87.

• 短文 • 上一篇    下一篇

在Turbo码数据帧中插入循环码实现纠错

李祥明, 乐光新   

  1. 北京邮电大学电信工程学院,北京 100876
  • 收稿日期:2000-03-06 出版日期:2000-12-10
  • 作者简介: 李祥明(1970—),男,重庆开县人,博士生.
  • 基金资助:
    国家自然科学基金资助项目(69872008)

Correcting Errors in the Data Frame ofTurbo Code Using Cyclic Code

LI Xiang-ming, YUE Guang-xin   

  1. Telecom Engineering School,Beijing University of Posts and Telecommunications,Beijing 100876,China
  • Received:2000-03-06 Online:2000-12-10
  • Supported by:
     

摘要: 提出Turbo码译码器输出似然比绝对值最小的若干符号出现差错的概率最大,可以将此若干符号的位置作为Turbo码译码器输出数据帧错误位置的依据。在此基础上,在Turbo码的数据帧中插入简单的CRC码即可前向纠正单个或多个随机差错。

关键词: 纠错编码, Turob码, 循环冗余检测码

Abstract: Most of the errors in a data block of the turbo codes occur within those symbols whose output LLR of the turbo decoder have the minimum absolute values.The locations of those symbols which have very low LLR absolute value as the references of the error locations are used.Single-bit and multi-bit random errors in a data block can be forward corrected with a simple cyclic redundancy check code.

Key words: error-correcting code, turbo codes, cyclic redundancy check code

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