无线通信物理层安全方法综述

发布时间：2018-12-18 05:43

【摘要】：随着无线终端数目的急剧增加以及无线网络的开放性,无线通信的安全问题面临着严重的挑战。与传统加密方法不同,无线通信物理层安全方法从信息论的角度出发,旨在实现无条件安全。本文回顾了Shannon建立的无线通信物理层安全模型,并着重回顾了由Wyner引导的无密钥安全和由Maurer引导的基于无线信道密钥的两大物理层安全分支的发展。其中前者通过波束形成或人工噪声的方法增加合法信道和窃听信道之间的差距;后者则利用无线信道的特性,将其作为产生密钥的天然随机源。在第五代移动通信方式下,物理层安全可以实现轻量级的加解密技术,解决传统加解密延时过长的问题。然而虽然物理层安全的理论研究已日趋成熟,该领域在实际应用中仍有很多问题亟待解决。
[Abstract]:With the rapid increase of the number of wireless terminals and the openness of wireless network, the security of wireless communication is facing serious challenges. Different from the traditional encryption method, the physical layer security method of wireless communication aims to realize unconditional security from the point of view of information theory. This paper reviews the physical layer security model of wireless communication established by Shannon, and emphatically reviews the development of the two physical layer security branches based on wireless channel keys, which are led by Wyner and led by Maurer. The former increases the gap between the legitimate channel and the eavesdropping channel by beamforming or artificial noise, while the latter uses the characteristics of the wireless channel as a natural random source to generate the key. In the fifth generation mobile communication mode, physical layer security can realize lightweight encryption and decryption technology, and solve the problem of long delay of traditional encryption and decryption. However, although the theoretical research of physical layer security has become more and more mature, there are still many problems to be solved in practical application.
【作者单位】：东南大学信息科学与工程学院;
【基金】：国家重点基础研究发展计划(“九七三”计划)(2013CB338003)资助项目欧盟第七框架国际合作项目“环境友好的物联网可靠性及安全性研究”资助项目
【分类号】：TN92

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