Robust Secure Beamforming Algorithm for IRS-Aided Terahertz Satellite Communication Systems

被引：0
|
作者：
Lin M. [1 ]
Li F. [1 ]
Wang Z.-N. [1 ]
Zhao B. [1 ]
Han L. [1 ]
机构：
[1] College of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Jiangsu, Nanjing
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2023年 / 51卷 / 10期
关键词：
intelligent reflecting surface; physical layer security; robust beamforming; satellite communications; terahertz band;
D O I：
10.12263/DZXB.20221285
中图分类号：
学科分类号：
摘要：
In this paper, a robust secure beamforming scheme based on imperfect channel state information (CSI) is proposed for the intelligent reflecting surface (IRS)-aided terahertz satellite communication systems, in order to improve the physical layer security performance of the system. First, we consider a scenario where an IRS-aided terahertz satellite system adopts multicast technique to serve multiple legitimate users in the presence of multiple eavesdroppers in the coverage area, based on which a joint optimization problem is formulated in order to minimize the satellite transmit power under the constraints constructed by the achievable rate (AR) and the achievable secrecy rate (ASR) requirements of each legitimate users. Secondly, considering that AR and ASR are non-convex probabilistic constraints caused by imperfect CSI, an approach associated with the second-order Taylor expansion and S-procedure is proposed to transform the non-convex constraints. Further, the joint optimization scheme of the phase shift of IRS and the transmit power of satellite can be solved by semidefinite programming. Finally, the effectiveness and superiority of the proposed scheme are verified by simulation results. © 2023 Chinese Institute of Electronics. All rights reserved.
引用
收藏
页码：2715 / 2723
页数：8
相关论文
共 24 条
  • [1] KODHELI O, LAGUNAS E, MATURO N, Et al., Satellite communications in the new space era: A survey and future challenges, IEEE Communications Surveys & Tutorials, 23, 1, pp. 70-109, (2020)
  • [2] AKYILDIZ I F, JORNET J M, HAN C., TeraNets: Ultra-broadband communication networks in the terahertz band, IEEE Wireless Communications, 21, 4, pp. 130-135, (2014)
  • [3] TEKBIYIK K, KURT G K, EKTi A R, Et al., Reconfigurable intelligent surfaces empowered THz communication in LEO satellite networks, IEEE Access, 10, pp. 121957-121969, (2022)
  • [4] LIN M, HUANG Q Q, DE COLA T, Et al., Integrated 5G-satellite networks: A perspective on physical layer reliability and security, IEEE Wireless Communications, 27, 6, pp. 152-159, (2020)
  • [5] LIN M, ZHANG J, LIN Z, Et al., Secure beamforming algorithm for satellite communication in multicast transmission mode, Acta Electronica Sinica, 50, 1, pp. 98-105, (2022)
  • [6] DAI L L, WANG B C, WANG M, Et al., Reconfigurable intelligent surface-based wireless communications: Antenna design, prototyping, and experimental results, IEEE Access, 8, pp. 45913-45923, (2020)
  • [7] LU H C, WANG Y Z, ZHAO D, Et al., Survey of physical layer security of intelligent reflecting surface-assisted wireless communication systems, Journal on Communications, 43, 2, pp. 171-184, (2022)
  • [8] CUI M, ZHANG G C, ZHANG R., Secure wireless communication via intelligent reflecting surface, IEEE Wireless Communications Letters, 8, 5, pp. 1410-1414, (2019)
  • [9] HONG S, PAN C H, REN H, Et al., Robust transmission design for intelligent reflecting surface aided secure communications, GLOBECOM 2020 - 2020 IEEE Global Communications Conference, pp. 1-6, (2021)
  • [10] XU S, LIU J J, CAO Y R, Et al., Intelligent reflecting surface enabled secure cooperative transmission for satellite-terrestrial integrated networks, IEEE Transactions on Vehicular Technology, 70, 2, pp. 2007-2011, (2021)
123