Ergodic Secrecy Rate of RIS-Assisted Communication Systems in the Presence of Discrete Phase Shifts and Multiple Eavesdroppers

被引：61
作者：
Xu, Peng [1 ]
Chen, Gaojie [2 ]
Pan, Gaofeng [3 ]
Di Renzo, Marco [4 ,5 ]
机构：
[1] Chongqing Univ Posts & Telecommun, Sch Commun & Informat Engn, Chongqing Key Lab Mobile Commun Technol, Chongqing 400065, Peoples R China
[2] Univ Leicester, Sch Engn, Leicester LE1 7RH, Leics, England
[3] Beijing Inst Technol, Sch Cyberspace Sci & Technol, Beijing 100081, Peoples R China
[4] Univ Paris Saclay, CNRS, F-91192 Gif Sur Yvette, France
[5] CentraleSupelec, Lab Signaux & Syst, F-91192 Gif Sur Yvette, France
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2021年 / 10卷 / 03期
基金：
中国国家自然科学基金; 英国工程与自然科学研究理事会;
关键词：
Reconfigurable intelligent surface; discrete phase shifts; multiple eavesdroppers; ergodic secrecy rate; WIRELESS COMMUNICATION; INTELLIGENT;
D O I：
10.1109/LWC.2020.3044178
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 investigates the ergodic secrecy rate (ESR) of a reconfigurable intelligent surface (RIS)-assisted communication system in the presence multiple eavesdroppers (Eves), and by assuming discrete phase shifts at the RIS. In particular, a closed-form approximation of the ESR is derived for both noncolluding and colluding Eves. The analytical results are shown to be accurate when the number of reflecting elements of the RIS N is large. Asymptotic analysis is provided to investigate the impact of N on the ESR, and it is proved that the ESR scales with log N-2 for both non-colluding and colluding Eves. Numerical results are provided to verify the analytical results and the obtained scaling laws.
引用
收藏
页码：629 / 633
页数：5
相关论文
共 25 条
[1]   Wireless Communications Through Reconfigurable Intelligent Surfaces [J].
Basar, Ertugrul ;
Di Renzo, Marco ;
De Rosny, Julien ;
Debbah, Merouane ;
Alouini, Mohamed-Slim ;
Zhang, Rui .
IEEE ACCESS, 2019, 7 :116753-116773
[2]   Intelligent Reflecting Surface Aided Multi-Antenna Secure Transmission [J].
Chu, Zheng ;
Hao, Wanming ;
Xiao, Pei ;
Shi, Jia .
IEEE WIRELESS COMMUNICATIONS LETTERS, 2020, 9 (01) :108-112
[3]   Secure Wireless Communication via Intelligent Reflecting Surface [J].
Cui, Miao ;
Zhang, Guangchi ;
Zhang, Rui .
IEEE WIRELESS COMMUNICATIONS LETTERS, 2019, 8 (05) :1410-1414
[4]  
Di Renzo M., 2019, EURASIP J WIREL COMM, V1, P1, DOI DOI 10.1186/S13638-019-1438-9
[5]   Reconfigurable Intelligent Surfaces vs. Relaying: Differences, Similarities, and Performance Comparison [J].
Di Renzo, Marco ;
Ntontin, Konstantinos ;
Song, Jian ;
Danufane, Fadil H. ;
Qian, Xuewen ;
Lazarakis, Fotis ;
De Rosny, Julien ;
Dinh-Thuy Phan-Huy ;
Simeone, Osvaldo ;
Zhang, Rui ;
Debbah, Meroaune ;
Lerosey, Geoffroy ;
Fink, Mathias ;
Tretyakov, Sergei ;
Shamai, Shlomo .
IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY, 2020, 1 :798-807
[6]   On the Impact of Phase Shifting Designs on IRS-NOMA [J].
Ding, Zhiguo ;
Schober, Robert ;
Poor, H. Vincent .
IEEE WIRELESS COMMUNICATIONS LETTERS, 2020, 9 (10) :1596-1600
[7]  
Gradshteyn I. S, 2014, Table of Integrals
[8]   Intelligent Reflecting Surface Assisted Secrecy Communication: Is Artificial Noise Helpful or Not? [J].
Guan, Xinrong ;
Wu, Qingqing ;
Zhang, Rui .
IEEE WIRELESS COMMUNICATIONS LETTERS, 2020, 9 (06) :778-782
[9]  
Karasik R, 2020, IEEE INT SYMP INFO, P2965, DOI [10.1109/isit44484.2020.9174060, 10.1109/ISIT44484.2020.9174060]
[10]   Ergodic Capacity of Intelligent Reflecting Surface-Assisted Communication Systems With Phase Errors [J].
Li, Dong .
IEEE COMMUNICATIONS LETTERS, 2020, 24 (08) :1646-1650
123