dc.contributor.author | Xie, Z | |
dc.contributor.author | Liu, Y | |
dc.contributor.author | Yi, W | |
dc.contributor.author | Wu, X | |
dc.contributor.author | Nallanathan, A | |
dc.date.accessioned | 2024-07-11T11:02:15Z | |
dc.date.available | 2024-07-11T11:02:15Z | |
dc.date.issued | 2023-11-10 | |
dc.identifier.citation | Z. Xie, Y. Liu, W. Yi, X. Wu and A. Nallanathan, "Physical Layer Security for STAR-RIS-NOMA: A Stochastic Geometry Approach," in IEEE Transactions on Wireless Communications, vol. 23, no. 6, pp. 6030-6044, June 2024, doi: 10.1109/TWC.2023.3329871. keywords: {NOMA;Protocols;Array signal processing;Fading channels;Eavesdropping;Wireless communication;Geometry;Non-orthogonal multiple access;performance analysis;physical layer security;reconfigurable intelligent surface;stochastic geometry}, | en_US |
dc.identifier.issn | 1536-1276 | |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/98007 | |
dc.description.abstract | In this paper, a stochastic geometry based analytical framework is proposed for secure simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisted non-orthogonal multiple access (NOMA) transmissions, where legitimate users (LUs) and eavesdroppers are randomly distributed. Both the time-switching protocol (TS) and energy splitting (ES) protocol are considered for the STAR-RIS. To characterize system performance, the channel statistics are first provided, and the Gamma approximation is adopted for general cascaded κ-μ fading. Afterward, the closed-form expressions for both the secrecy outage probability (SOP) and average secrecy capacity (ASC) are derived. To obtain further insights, the asymptotic performance for the secrecy diversity order and the secrecy slope are deduced. The theoretical results show that 1) the secrecy diversity orders of the strong LU and the weak LU depend on the path loss exponent and the distribution of the received signal-to-noise ratio, respectively; 2) the secrecy slope of the ES protocol achieves the value of one, higher than the slope of the TS protocol which is the mode operation parameter of TS. The numerical results demonstrate that: 1) there is an optimal STAR-RIS mode operation parameter to maximize the secrecy performance; 2) the STAR-RIS-NOMA significantly outperforms the STAR-RIS-orthogonal multiple access. | en_US |
dc.format.extent | 6030 - 6044 | |
dc.publisher | IEEE | en_US |
dc.relation.ispartof | IEEE Transactions on Wireless Communications | |
dc.rights | © 2023 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. | |
dc.title | Physical Layer Security for STAR-RIS-NOMA: A Stochastic Geometry Approach | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1109/TWC.2023.3329871 | |
pubs.issue | 6 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published | en_US |
pubs.volume | 23 | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
rioxxterms.funder.project | b215eee3-195d-4c4f-a85d-169a4331c138 | en_US |