通信学报 ›› 2017, Vol. 38 ›› Issue (9): 185-192.doi: 10.11959/j.issn.1000-436x.2017132

• 学术通信 • 上一篇    下一篇

基于中继间干扰消除的轮流转发系统安全传输方案

邹羿,黄开枝,康小磊   

  1. 国家数字交换系统工程技术研究中心,河南 郑州 450002
  • 修回日期:2017-04-12 出版日期:2017-09-01 发布日期:2017-10-18
  • 作者简介:邹羿(1991-),男,山东济南人,国家数字交换系统工程技术研究中心硕士生,主要研究方向为无线物理层安全、协作通信等。|黄开枝(1973-),女,安徽滁州人,国家数字交换系统工程技术研究中心教授、博士生导师,主要研究方向为移动通信网络与信息安全等。|康小磊(1986-),男,陕西咸阳人,国家数字交换系统工程技术研究中心博士生,主要研究方向为无线物理层安全、D2D通信。
  • 基金资助:
    国家高技术研究发展计划(“863”计划)基金资助项目(2014AA01A701);国家自然科学基金资助项目(61379006);国家自然科学基金资助项目(61521003);国家自然科学基金资助项目(61701538)

Successive relaying secure transmission scheme based on inter-relay interference cancellation

Yi ZOU,Kai-zhi HUANG,Xiao-lei KANG   

  1. China National Digital Switching System Engineering &Technological R&D,Zhengzhou 450002,China
  • Revised:2017-04-12 Online:2017-09-01 Published:2017-10-18
  • Supported by:
    The National High Technology Research and Development Program of China (863 Program)(2014AA01A701);The National Natural Science Foundation of China(61379006);The National Natural Science Foundation of China(61521003);The National Natural Science Foundation of China(61701538)

摘要:

针对轮流转发系统中非信任中继窃听的问题,提出一种基于中继间干扰消除的安全传输方案。首先,利用可信中继与非信任中继交替转发产生的中继间干扰,恶化非信任中继的窃听条件。然后,利用信号在时域上的相关性进行干扰迭代消除,完全消除合法用户处中继间干扰,提升合法用户接收信号质量。在此基础上,提出了以最小化窃听和容量为目标的快速功率分配算法。分析和仿真结果表明,方案在保障通信效率的同时抑制了非信任中继的窃听,在仿真条件下,系统的保密速率提升了至少2 bit·s-1·Hz-1

关键词: 轮流转发, 非信任中继, 中继间干扰, 保密速率

Abstract:

A secure scheme based on inter-relay interference cancellation was proposed to solve untrusted relay eavesdropping problem in successive relaying systems.First inter-relay interference between trusted relay and untrusted relay was exploited as artificial noise to degrade untrusted relay’s eavesdropping condition,then interference iterative cancellation was adapted to improve signal quality at legitimate user by making use of correlation between signals in time domain.Based on this,a quick power allocation algorithm aiming to minimize untrusted relay’s sum rate was proposed.Analysis and simulation results show that the proposed scheme suppress untrusted relay’s eavesdropping without loss of communication efficiency,a promotion of at least 2 bit·s-1·Hz-1in secrecy rate can be observed.

Key words: successive relaying, untrusted relay, inter-relay interference, secrecy rate

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