Secure Millimeter-Wave Ad Hoc Communications Using Physical Layer Security
Secure Millimeter-Wave Ad Hoc Communications Using Physical Layer Security
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DOI：
10.1109/tifs.2021.3054507
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发表时间：
2020-09
影响因子：
6.8
通讯作者：
Yuanyu Zhang;Yulong Shen;Xiaohong Jiang;S. Kasahara
中科院分区：
文献类型：
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作者：
Yuanyu Zhang;Yulong Shen;Xiaohong Jiang;S. Kasahara
毫米波（mmWave）通信非常有希望提高现代无线网络的容量，而物理层安全（PLS）技术在增强其中的关键保密性能方面具有巨大潜力。通过仔细利用非视距 (NLoS) 和视距 (LoS) 毫米波链路之间的显着信号差异，本文提出了一种基于视距的协作干扰 (SCJ) 方案，以提高毫米波自组织通信的 PLS 性能。在该方案中，以一定的概率选择与最近的接收器没有LoS链路但可能具有与窃听者的LoS链路的每个潜在干扰机来生成人工噪声，从而可以在合法接收器处实现信道优势。对于新干扰方案的性能建模，首先开发了新颖且有效的理论近似方法来解决干扰分布建模的挑战性问题，然后提出了基于随机几何的理论框架来捕获 SCJ 方案下的保密传输容量行为。最后，提供了大量的数值结果来说明各种网络场景下的 SCJ 方案。
Millimeter-wave (mmWave) communications are highly promising to improve the capacity of modern wireless networks, while the physical layer security (PLS) techniques hold great potential to enhance the critical secrecy performance therein. By carefully exploiting the significant signal difference between the Non-Light-of-Sight (NLoS) and Line-of-Sight (LoS) mmWave links, this paper proposes a Sight-based Cooperative Jamming (SCJ) scheme to improve the PLS performance of mmWave ad hoc communications. In this scheme, each potential jammer that has no LoS link to its nearest receiver but may have LoS links to eavesdroppers is selected with a certain probability to generate artificial noise such that channel advantages at legitimate receivers can be achieved. For performance modeling of the new jamming scheme, novel and efficient theoretical approximation approaches are firstly developed to enable the challenging issue of interference distribution modeling to be tackled, and then a theoretical framework based on stochastic geometry is proposed to capture the secrecy transmission capacity behavior under the SCJ scheme. Finally, extensive numerical results are provided to illustrate the SCJ scheme under various network scenarios.