Physical layer security analysis of IRS-based downlink and uplink NOMA networks

EURASIP Journal on Wireless Communications and Networking

Research

Miroslav Voznak¹  Si-Phu Le¹  Anh-Tu Le¹  Cuu Ho Van²  Hong-Nhu Nguyen²  Nhat-Tien Nguyen² 

[1] Faculty of Electrical Engineering and Computer Science, VSB-Technical University of Ostrava, 17. Listopadu 2172/15, 70800, Ostrava, Czech Republic;Faculty of Electronics and Telecommunications, Saigon University (SGU), Ho Chi Minh City, Vietnam;

关键词: Intelligent reflecting surface;    Non-orthogonal multiple access;    Physical layer security;    Downlink;    Uplink;   

DOI  :  10.1186/s13638-023-02309-5

 received in 2023-04-04, accepted in 2023-09-23,  发布年份 2023

来源: Springer

【 摘 要 】

In recent years, the development of intelligent reflecting surface (IRS) in wireless communications has enabled control of radio waves to reduce the detrimental impacts of natural wireless propagation. These can achieve significant spectrum and energy efficiency in wireless networks. Non-orthogonal multiple access (NOMA) technology, on the other hand, is predicted to improve the spectrum efficiency of fifth-generation and later wireless networks. Motivated by this reality, we consider the IRS-based NOMA network in the downlink and uplink scenario with a pernicious eavesdropper. Moreover, we investigated the physical layer security (PLS) of the proposed system by invoking the connection outage probability (COP), secrecy outage probability (SOP), and average secrecy rate (ASR) with analytical derivations. The simulation results reveal that (i) it is carried out to validate the analytical formulas, (ii) the number of meta-surfaces in IRS, transmit power at the base station, and power allocation parameters all play an essential role in improving the system performance, and (iii) it demonstrates the superiority of NOMA to the traditional orthogonal multiple access (OMA).

【 授权许可】

CC BY   
© Springer Nature Switzerland AG 2023

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