系统工程与电子技术 ›› 2020, Vol. 42 ›› Issue (5): 1160-1165.doi: 10.3969/j.issn.1001-506X.2020.05.25

• 通信与网络 • 上一篇    下一篇

期望接收机和窃听接收机位置相邻物理层安全通信方案

高建邦1,2(), 袁朝辉1(), 邱彬3()   

  1. 1. 西北工业大学自动化学院, 陕西 西安 710072
    2. 西安石油大学电子工程学院, 陕西 西安 710065
    3. 西北工业大学电子信息学院, 陕西 西安 710072
  • 收稿日期:2019-10-28 出版日期:2020-04-30 发布日期:2020-04-30
  • 作者简介:高建邦 (1990-),男,讲师,博士研究生,主要研究方向无线物理层安全通信、大规模阵列天线技术。E-mail:gjbang2008@126.com|袁朝辉 (1964-),男,教授,博士,主要研究方向为物理层安全、液压系统流场分析。E-mail:yuanzhh@nwpu.edu.cn|邱彬 (1989-),男,博士研究生,主要研究方向为无线物理层安全通信、大规模阵列天线技术。E-mail:qiubin@mail.nwpu.edu.cn
  • 基金资助:
    国家自然科学基金(51505381);国家自然科学基金(51874238);国家自然科学基金(51275423)

Physical-layer security wireless transmission synthesis scheme for proximal desired receiver user and eavesdropper

Jianbang GAO1,2(), Zhaohui YUAN1(), Bin QIU3()   

  1. 1. School of Automation, Northwestern Polytechnical University, Xi'an 710072, China
    2. School of Electronic Engineering, Xi'an Shiyou University, Xi'an 710065, China
    3. School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2019-10-28 Online:2020-04-30 Published:2020-04-30
  • Supported by:
    国家自然科学基金(51505381);国家自然科学基金(51874238);国家自然科学基金(51275423)

摘要:

针对期望接收机和窃听接收机位置相邻,即期望信道和窃听信道高度耦合的情况下安全无线通信问题,提出了基于频控阵的物理层安全通信方案。首先,考虑窃听接收机位置已知,通过自适应遗传算法得到发射阵元间最优时不变频率增量,最大化系统的保密容量;同时,在基带信号中添加人工噪声,降低窃听端的信噪比。其次,改进优化方案,实现窃听端未知情况下的安全通信。最后,进行仿真对比实验,验证了方案的安全性能。

关键词: 物理层安全, 频控阵, 人工噪声

Abstract:

For the secure wireless communication of the proximal desired receiver user and the eavesdropper, i.e., channels of the legitimate user and the eavesdropper are highly correlated, a physical-layer security wireless transmission synthesis based on frequency diverse arrays is proposed. Firstly, for the physical layer security problems for knowing locations of the eavesdropper, the optimal frequency in the crement across transmit element is obtained by the adaptive genetic algorithm to maximize the secrecy capacity. And then the artificial noise and the design projection matrix are added to reduce the signal-to-noise ratio of the eavesdropper user. Furthermore, the proposed approach is extended to the case of the unknown location of the eavesdropper. Finally, numerical results show that the proposed method can provide the satisfactory secrecy capacity.

Key words: physical-layer security, frequency diverse array, artificial noise

中图分类号: