电子学报 ›› 2018, Vol. 46 ›› Issue (1): 15-23.DOI: 10.3969/j.issn.0372-2112.2018.01.003

• 学术论文 • 上一篇    下一篇

利用Gibbs采样进行优化的Turbo码交织器识别

陈泽亮1, 李静1, 彭华1, 巩克现1, 王浩2   

  1. 1. 解放军信息工程大学, 河南郑州 450002;
    2. 中国人民解放军61081部队, 北京 100094
  • 收稿日期:2016-06-20 修回日期:2016-10-20 出版日期:2018-01-25 发布日期:2018-01-25
  • 作者简介:陈泽亮,男,1992年4月出生,湖南岳阳人.解放军信息工程大学硕士生,主要研究方向为信道编码识别分析.E-mail:zelchen@163.com;李静,女,1972年5月出生,山东烟台人.解放军信息工程大学副教授、硕士生导师,主要研究方向为信道编码、信号分析与处理.
  • 基金资助:
    国家自然科学基金(No.61401511)

An Optimization Method Using Gibbs Sampler for Turbo-Code Interleaver Identification

CHEN Ze-liang1, LI Jing1, PENG Hua1, GONG Ke-xian1, WANG Hao2   

  1. 1. PLA Information Engineering University, Zhengzhou, Henan 450002, China;
    2. 61081 Forces, Beijing 100094, China
  • Received:2016-06-20 Revised:2016-10-20 Online:2018-01-25 Published:2018-01-25

摘要: 针对基于校验方程符合度方法前面交织关系识别会严重影响其后所有交织关系识别的不足,本文对该算法进行了改进.改进算法根据原算法性能受限的原因进行方法设计,利用识别可靠度找到交织识别错误位置,并从降低复杂度角度出发,根据编码器的记忆特性,仅针对部分相关数据采用Gibbs样本法得到条件概率进行纠错.仿真结果表明,改进算法较原算法性能改善明显,在相同信噪比条件下,达到相同识别性能时所需数据量减少一半;在相同数据量条件下,达到相同正确率时的信噪比增益约为1dB.

关键词: Turbo码交织器, 校验方程符合度, 识别可靠度, Gibbs样本法

Abstract: The method based on conformity of parity-check equation was improved for its defect that the front interleaver identification has a strong impact on all the interleaver behind.The improved algorithm designs an approach on account of the limited performance of the original algorithm.It uses the recognition reliability to find the error position of interleaver identification.And from the purpose of reducing the complexity,it uses Gibbs sampling method to get the conditional probability of some relevant information for error correction according to the memory feature of the encoder.Simulation results show that,the improved algorithm performs better than the original algorithm,and it only needs half of the data to achieve the same recognition performance under the condition of the same SNR and has 1dB SNR gain to achieve the same accuracy under the condition of the same amount of data.

Key words: Turbo-code interleaver, the conformity of parity-check equation, the recognition reliability, Gibbs sampling method

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