Full Text:   <439>

Summary:  <164>

CLC number: TN918

On-line Access: 2024-01-26

Received: 2023-02-28

Revision Accepted: 2024-01-26

Crosschecked: 2023-09-03

Cited: 0

Clicked: 656

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Kaizhi HUANG

https://orcid.org/0000-0002-7084-3826

Zheng WAN

https://orcid.org/0000-0003-4547-5918

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Frontiers of Information Technology & Electronic Engineering  2023 Vol.24 No.12 P.1803-1814

http://doi.org/10.1631/FITEE.2300126


Pattern-reconfigurable antenna-assisted secret key generation from multipath fading channels


Author(s):  Zheng WAN, Mengyao YAN, Kaizhi HUANG, Zhou ZHONG, Xiaoming XU, Yajun CHEN, Fan WU

Affiliation(s):  PLA Strategic Support Force Information Engineering University, Zhengzhou 450001, China; more

Corresponding email(s):   wanzheng18@alumni.hust.edu.cn, huangkaizhi@tsinghua.org.cn

Key Words:  Physical layer security, Secret key generation, Reconfigurable intelligent surface, Multipath fading, Pattern-reconfigurable antenna


Zheng WAN, Mengyao YAN, Kaizhi HUANG, Zhou ZHONG, Xiaoming XU, Yajun CHEN, Fan WU. Pattern-reconfigurable antenna-assisted secret key generation from multipath fading channels[J]. Frontiers of Information Technology & Electronic Engineering, 2023, 24(12): 1803-1814.

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author="Zheng WAN, Mengyao YAN, Kaizhi HUANG, Zhou ZHONG, Xiaoming XU, Yajun CHEN, Fan WU",
journal="Frontiers of Information Technology & Electronic Engineering",
volume="24",
number="12",
pages="1803-1814",
year="2023",
publisher="Zhejiang University Press & Springer",
doi="10.1631/FITEE.2300126"
}

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A1 - Yajun CHEN
A1 - Fan WU
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Abstract: 
Physical layer key generation (PKG) technology leverages reciprocal channel randomness to generate shared secret keys. However, multipath fading at the receiver may degrade the correlation between legitimate uplink and downlink channels, resulting in a low key generation rate (KGR). In this paper, we propose a PKG scheme based on the pattern-reconfigurable antenna (PRA) to boost the secret key capacity. First, we propose a reconfigurable intelligent surface (RIS) based PRA architecture with the capability of flexible and reconfigurable antenna patterns. Then, we present the PRA-based PKG protocol to improve the KGR via mitigation of the effects of multipath fading. Specifically, a novel algorithm for estimation of the multipath channel parameters is proposed based on atomic norm minimization. Thereafter, a novel optimization method for the matching reception of multipath signals is formulated based on the improved binary particle swarm optimization (BPSO) algorithm. Finally, simulation results show that the proposed scheme can resist multipath fading and achieve a high KGR compared to existing schemes. Moreover, our findings indicate that the increased degree of freedom of the antenna patterns can significantly increase the secret key capacity.

基于多径衰落信道方向图可重构天线辅助的无线物理层密钥生成

万政1,闫梦瑶1,黄开枝1,2,钟州1,许晓明1,陈亚军1,吴凡2
1信息工程大学,中国郑州市,450001
2网络通信与安全紫金山实验室,中国南京市,210096
摘要:物理层密钥生成技术利用无线信道的互易性、随机性生成共享密钥。然而,多径衰落会降低上行链路和下行链路之间的相关性,从而导致较低的密钥生成速率。本文提出一种基于方向图可重构天线的物理层密钥生成方案提升密钥容量。具体地,我们设计了一种基于智能超表面(Reconfigurable reflecting surface,RIS)的可重构天线架构,利用灵活重构天线方向图的能力,提出基于可重构天线的物理层密钥生成协议。通过提出的基于原子范数最小化的多径信道估计算法以及多径信号匹配接收优化算法,可以实现通过减轻多径衰落的影响提高密钥生成速率。仿真结果表明,与现有方案相比,所提出方案能抵抗多径衰落并实现较高的密钥生成速率。此外,研究结果表明,天线方向图自由度的增加可以显着增加密钥容量。

关键词:物理层安全;密钥生成;智能超表面;多径衰落;方向图可重构天线

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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