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Computer Networks

Secrecy analysis of cooperative NOMA-FDR systems with imperfect CSI and colluding eavesdroppers

Tran Manh Hoang, Le The Dung, Bá Cao Nguyễn, Nguyen Van Vinh, Gia Thien Luu

Published Jan 25, 2023• 15 citations
Publisher
DOI
10.1016/j.comnet.2023.109594

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This paper investigates the physical layer security of a full-duplex (FD) Decode-and-Forward (DF) NOMA network assumed to undergo independent and identically distributed Nakagami-m fading. Herein, we provide a secrecy performance analysis for the case of multiple external eavesdroppers in both colluding and non-colluding wiretap scenario. Our analysis introduces novel expressions of the secrecy outage probability (SOP) as well as the strictly positive secrecy capacity (SPSC) for the proposed network. Finally, numerical analysis with simulations are given to illustrate the validity of the obtained theoretical results and to highlight the impact of multiple eavesdroppers on FD NOMA systems.