@inproceedings{e23dd7433b2d467cbbc69d862d8400ce,
title = "Simultaneous Information Relaying and Jamming via IRS to Secure NOMA Networks",
abstract = "This paper proposes a new simultaneous information relaying and jamming (SIRJ) scheme based on a multi-functional intelligent reflecting surface (IRS) to improve physical layer security of non-orthogonal multiple access networks. Specifically, the elements of IRS are split into two groups, where one group reflects the signal to improve the legitimate reception quality while the other group generates jamming signal to interfere with the eavesdropper. We aim to maximize the minimum secrecy rate (MSR) by jointly optimizing the transmit beamforming of the base station and the reflect beamforming of the IRS to enhance the secrecy performance. To tackle this intractable non-convex problem, a penalty based alternating algorithm is developed. Simulation results demonstrate the secrecy enhancement of the proposed SIRJ scheme over existing baseline schemes in terms of achieving a higher MSR.",
keywords = "Intelligent reflecting surface, non-orthogonal multiple access, physical layer security, secrecy rate",
author = "Mengyi Ji and Jian Chen and Lu Lv and Qingqing Wu and Zhiguo Ding and Long Yang",
note = "Funding Information: ACKNOWLEDGEMENT This work was partially supported by the National Natural Science Foundation of China under Grants 62271368, 61901313, and 61971320, the China Postdoctoral Science Foundation under Grants BX20190264 and 2019M650258, the FDCT under Grant 0119/2020/A3, and the GDST under Grant 2020B1212030003. Publisher Copyright: {\textcopyright} 2022 IEEE.; 14th IEEE International Conference on Wireless Communications and Signal Processing, WCSP 2022 ; Conference date: 01-11-2022 Through 03-11-2022",
year = "2022",
doi = "10.1109/WCSP55476.2022.10039325",
language = "British English",
series = "2022 IEEE 14th International Conference on Wireless Communications and Signal Processing, WCSP 2022",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1119--1124",
booktitle = "2022 IEEE 14th International Conference on Wireless Communications and Signal Processing, WCSP 2022",
address = "United States",
}