eprintid: 10199664 rev_number: 6 eprint_status: archive userid: 699 dir: disk0/10/19/96/64 datestamp: 2024-11-06 10:46:20 lastmod: 2024-11-06 10:46:20 status_changed: 2024-11-06 10:46:20 type: article metadata_visibility: show sword_depositor: 699 creators_name: Ghadi, FR creators_name: Kaveh, M creators_name: Wong, KK creators_name: Martin, D title: Physical Layer Security Performance of Cooperative Dual-RIS-Aided V2V NOMA Communications ispublished: inpress divisions: UCL divisions: B04 divisions: F46 keywords: V2V secure communications, RIS, NOMA, Fisher-Snedecor F fading channels, secrecy performance note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: This article investigates the performance of physical layer security (PLS) in a vehicle-to-vehicle (V2V) communication system, where a transmitter vehicle exploits a dual reconfigurable intelligent surface (RIS) to send confidential information to legitimate receiver vehicles under the nonorthogonal multiple access (NOMA) scheme in the presence of an eavesdropper vehicle. In particular, it is assumed that an RIS is near the transmitter vehicle and another RIS is close to the receiver vehicles to provide a wider smart radio environment. Besides, we suppose that the channels between two RISs suffer from the Fisher-Snedecor F fading model. Under this scenario, we first provide the marginal distributions of equivalent channels at the legitimate receiver vehicles by exploiting the central limit theorem. Then, in order to evaluate the PLS performance of the considered system model, we derive analytical expressions of the average secrecy capacity (ASC), secrecy outage probability, and secrecy energy efficiency by using the Gauss-Laguerre quadrature and the Gaussian quadrature techniques. Moreover, to gain more insights into the secrecy performance, the asymptotic expression of the ASC is obtained. The numerical results indicate that incorporating the dual RIS in the secure V2V communication under the NOMA scheme can significantly provide ultrareliable transmission and guarantee more secure communication for intelligent transportation systems. date: 2024-10-22 date_type: published publisher: Institute of Electrical and Electronics Engineers (IEEE) official_url: http://dx.doi.org/10.1109/jsyst.2024.3476447 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 2332693 doi: 10.1109/JSYST.2024.3476447 lyricists_name: Wong, Kai-Kit lyricists_id: KWONG98 actors_name: Wong, Kai-Kit actors_id: KWONG98 actors_role: owner full_text_status: public publication: IEEE Systems Journal issn: 1932-8184 citation: Ghadi, FR; Kaveh, M; Wong, KK; Martin, D; (2024) Physical Layer Security Performance of Cooperative Dual-RIS-Aided V2V NOMA Communications. IEEE Systems Journal 10.1109/JSYST.2024.3476447 <https://doi.org/10.1109/JSYST.2024.3476447>. (In press). Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10199664/1/SJ-Dual-RIS-v1.pdf