Zaghdoud, NesrineMnaouer, Adel BenBoujemaa, HatemTouati, Farid2021-04-062021-04-06© 2020© 20202020-11-17Zaghdoud, N., Mnaouer, A.B., Boujemaa, H. & Touati, F. (2020). Secrecy Performance of Cooperative NOMA System with Multiple Full-Duplex Relays against Non-Colluding/Colluding Eavesdroppers. 2020 IEEE 45th LCN Symposium on Emerging Topics in Networking (LCN Symposium), 70-77, https://doi.org/10.1109/LCNSymposium50271.2020.9363270978-172818314-5https://doi.org/10.1109/LCNSymposium50271.2020.9363270http://hdl.handle.net/20.500.12519/375This conference paper is not available at CUD collection. The version of scholarly record of this conference paper is published in 2020 IEEE 45th LCN Symposium on Emerging Topics in Networking (LCN Symposium) (2020), available online at: https://doi.org/10.1109/LCNSymposium50271.2020.9363270In 5G and beyond wireless communication net-works, non-orthogonal multiple access (NOMA) and Full-Duplex (FD) techniques are considered as promising key techniques. However, the secrecy in NOMA systems has proven to be quite challenging, especially in the presence of multiple eavesdroppers. For this purpose and using the potential of cooperative and FD communication, we investigate the secrecy performance of dual-hop FD Amplify-and-Forward NOMA system. Based on the channel state information of the first hop, partial relay selection (PRS) is performed to determine the best relay. The secrecy outage behaviour of the considered system is studied through deriving closed-form expressions of the secrecy outage probability (SOP) metric for both strong and weak NOMA users under the presence of multiple eavesdroppers in colluding and non-colluding wiretapping scenarios. Numerical results are also provided to verify the derived analytical results. © 2020 IEEE.enPermission to reuse abstract has been secured from Institute of Electrical and Electronics Engineers Inc.5G mobile communication systemsChannel state informationFinite difference methodAmplify and forwardAnalytical resultsClosed-form expressionFull-duplex relaysNumerical resultsPartial relay selectionsSecrecy outage probabilitiesWireless communicationsCooperative communicationConference PaperCopyright : 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.