通信学报 ›› 2016, Vol. 37 ›› Issue (9): 75-81.doi: 10.11959/j.issn.1000-436x.2016177

• 学术论文 • 上一篇    下一篇

均匀散射环境中物理层安全密钥容量分析

王旭,金梁(),刘璐,李明亮,黄开枝   

  1. 国家数字交换系统工程技术研究中心,河南 郑州 450002
  • 出版日期:2016-09-25 发布日期:2016-09-28
  • 基金资助:
    国家高技术研究发展计划(“863”计划)基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;中国博士后科学基金资助项目

Analysis of physical layer secret key capacity in the uniform scattering environment

Xu WANG,Liang JIN(),Lu LIU,Ming-liang LI,Kai-zhi HUANG   

  1. National Digital Switching System Engineering & Technological Research Center,Zhengzhou 450002,China
  • Online:2016-09-25 Published:2016-09-28
  • Supported by:
    The National High Technology Research and Development Program of China (863 Program);The National Natural Science Foundation of China;The National Natural Science Foundation of China;China Postdoctoral Science Foundation

摘要:

物理层安全密钥容量受信道测量时差、终端移动和加性噪声等因素影响,在均匀散射环境中定量分析了上述因素对密钥容量的影响。在分析含噪窄带信道参数的时域统计特性的基础之上,推导了密钥容量时域闭式解,并且分别在均匀散射和非均匀散射环境中验证了推导结果的正确性和适用性。

关键词: 物理层安全, 物理层安全密钥, 密钥容量, 均匀散射环境

Abstract:

Physical layer secret key capacity was affected by time difference of channel sounding,mobility of terminals,and additive noise.Effects on the physical layer secret key capacity were quantitatively analyzed in the uniform scattering environment.Based on the time domain statistical characteristics of narrow band wireless channel parameters with noise,a closed-form solution to physical layer secret key capacity in the time domain was derived.Afterwards,simulations in the uniform and non-uniform scattering environment were carried out to demonstrate its validity and applicability,respectively.

Key words: physical layer security, physical layer secret key, secret key capacity, uniform scattering environment

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