J4 ›› 2013, Vol. 40 ›› Issue (4): 161-166.doi: 10.3969/j.issn.1001-2400.2013.04.027

• 研究论文 • 上一篇    下一篇



  1. (中国电子科技集团公司第54研究所,河北 石家庄  050081)
  • 收稿日期:2012-03-14 出版日期:2013-08-20 发布日期:2013-10-10
  • 通讯作者: 李啸天
  • 作者简介:李啸天(1986-),男,中国电子科技集团公司第54研究所博士研究生,E-mail:lxtrichard@126.com.
  • 基金资助:


Research on the recognition algorithm of Turbo codes on  trellis termination

LI Xiaotian;ZHANG Runsheng;LI Yanbin   

  1.  (The 54th Research Institude of CETC, Shijiazhuang  050081, China)
  • Received:2012-03-14 Online:2013-08-20 Published:2013-10-10
  • Contact: LI Xiaotian


针对信息截获领域中Turbo码盲识别问题,将归零Turbo码识别算法归纳为编码结构识别与编码器参数识别.在编码结构识别方面,利用归零Turbo码所具有的线性分组码的特性,通过分析编码序列矩阵在不同列数、不同起点条件下秩的特征,实现了码组长度、码字起点的盲识别; 在编码器参数识别方面,通过对比交织前后序列矩阵的列向量,设定判决门限,将个数小于门限值的误码影响抹去,解决了传统交织方式识别算法容错性能较差的问题.仿真实验表明,识别算法在10-3误码率条件下识别正确率在80%以上,验证了该算法的有效性和可靠性.

关键词: 信道编码, Turbo码, 归零, 盲识别, 容错性能


For the blind recognition of Turbo codes in information interception, the recognition algorithm of turbo codes on trellis termination fall into following two parts. In coding structure recognition, turbo codes on trellis termination is defined as linear block codes, so the blind recognition of code length and start is achieved by analyzing the rank of codes matrix with a different number of columns and a different start; In encoder parameter recognition, by comparing the sequence matrix's column vector before and after interleaving and determining the decision threshold, the influence of error codes whose number is lower than the decision threshold is removed, and consequently, the problem of poor fault-tolerant performance in the traditional interleaving mode recognition method is solved. Simulation shows that the correct percentage of recognition is higher than 80% at 10-3 BER, and confirms the validity and reliability of the algorithm.

Key words: channel coding, Turbo codes, trellis termination, blind recognition, fault-tolerant performance


  • TN911.22