北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2019, Vol. 42 ›› Issue (1): 74-80.doi: 10.13190/j.jbupt.2018-101

• 论文 • 上一篇    下一篇

一种基于无率纠错码的联合纠错保密方案

雷维嘉, 李玉玉   

  1. 重庆邮电大学 通信与信息工程学院, 重庆 400065
  • 收稿日期:2018-05-09 出版日期:2019-02-28 发布日期:2019-03-08
  • 通讯作者: 李玉玉(1994-),女,硕士生,E-mail:1661125610@qq.com. E-mail:1661125610@qq.com
  • 作者简介:雷维嘉(1969-),男,教授.
  • 基金资助:
    国家自然科学基金项目(61471076);重庆市基础与前沿探索项目(cstc2017jcyjAX0204,cstc2018jcyjAX0432);长江学者和创新团队发展计划项目(IRT1299);重庆市科委重点实验室专项项目(CSTC)

A Joint Scheme for Error Correction and Secrecy Based on Rateless Error Correction Codes

LEI Wei-jia, LI Yu-yu   

  1. School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
  • Received:2018-05-09 Online:2019-02-28 Published:2019-03-08

摘要: 提出了一种基于无率码的信息安全可靠传输方案,在编码器和译码器中设置伪随机数发生器,产生随机的编码生成矩阵和删除图案,实现编码符号的随机产生和随机删除.伪随机数发生器的种子就是加解密的密钥.由于随机删除后编码符号的度分布未改变,无率码的纠错性能不受影响.在加性高斯白噪声信道和瑞利衰落信道下的仿真结果表明,窃听者译码的误比特率保持在0.5附近,误字率保持为1;而合法接收者的差错性能则与常规的无率码编码系统相同,实现了纠错和保密的功能.

关键词: 无率码, 保密, 纠错, 物理层安全

Abstract: A secure and reliable transmission scheme based on rateless codes is proposed. The encoder and decoder generete random coding matrix and deleting pattern by setting up pseudo-random number generators, enabling random generation and deletion of encoded symbols, and the seed of pseudo-random number generator is the secret key. Since the degree distribution of the encoded symbols after random deletion is not changed, the error correction performance of the rateless codes is not affected. Simulation under additive white Gaussian noise channel and Rayleigh fading channel indicates that the bit-error-rate of the eavesdropper is kept near 0.5, and the word-error-rate remains 1, while the error performance of the legitimate receiver is the same as conventional rateless coding systems, thus error correction and encryption are realized simultaneously.

Key words: rateless codes, secrecy, error correction, physical layer security

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