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综合馆
基于联合信道特征的中继物理层安全传输机制
  • 摘要

    针对中继节点不可信的问题,提出了一种基于联合信道特征的中继物理层安全传输机制.首先将中继前后的两个信道等效合并为一个,得到联合信道特征.然后在联合信道特征的零空间中,增加人工噪声,使参与转发的中继节点无法获得有效信息量.仿真结果表明:当增加的人工噪声处于合法接收者信道特征的零空间时,可以提高协作中继系统的保密容量,合法接收者的误码率要远低于不可信中继;保密容量随中继数量增加的变化趋势与窃听者的分布相关.

  • 作者

    李翔宇  金梁  黄开枝  吉江  LI Xiang-Yu  JIN Liang  HUANG Kai-Zhi  JI Jiang 

  • 作者单位

    国家数字交换系统工程技术研究中心 郑州450002

  • 刊期

    2012年7期 ISTIC EI PKU

  • 关键词

    物理层安全  协作中继系统  保密容量  人工噪声 

参考文献
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