An Optimal RIS Design Strategy for Jointly Improving Key Rate and Communication Performance in Quasi-Static Environments

被引：5
作者：
Liu, Ya [1 ,2 ]
Yang, Jie [2 ]
Huang, Kaizhi [2 ]
Hu, Xiaoyan [2 ]
Wang, Yi [3 ]
Wu, Fan [4 ]
机构：
[1] Zhengzhou Univ Aeronaut, Sch Intelligent Engn, Zhengzhou 450046, Peoples R China
[2] PLA Strateg Support Force Informat Engn Univ, Wireless Commun Technol Dept, Zhengzhou 450002, Peoples R China
[3] Zhengzhou Univ Aeronaut, Sch Intelligent Engn, Zhengzhou 450046, Peoples R China
[4] Purple Mt Labs, Network & Commun Secur, Nanjing 210096, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2023年 / 12卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Array signal processing; Signal to noise ratio; Channel estimation; Cryptography; Downlink; Wireless communication; Uplink; Reconfigurable intelligent surface; physical-layer key generation; communication performance; INTELLIGENT REFLECTING SURFACE; GENERATION;
D O I：
10.1109/LWC.2023.3284825
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter explores a joint improvement scheme for physical-layer secret key generation rate and communication performance with the aid of a reconfigurable intelligent surface (RIS) in quasi-static environments. Some RIS elements are exploited to construct random beams for key generation, and others are designed for energy-enhanced directional beamforming to improve the legitimate users' signal-to-noise ratio (SNR). A joint design protocol is proposed, and the optimal RIS design strategy is analyzed to minimize the transmit power. Simulation results show that our scheme can resist the instantaneous SNR loss caused by the fast-fading effect in random channels and achieve joint improvement of key rate and communication performance.
引用
收藏
页码：1618 / 1622
页数：5
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