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Article: Physical Layer Security for STAR-RIS-NOMA: A Stochastic Geometry Approach
Title | Physical Layer Security for STAR-RIS-NOMA: A Stochastic Geometry Approach |
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Authors | |
Keywords | Non-orthogonal multiple access performance analysis physical layer security reconfigurable intelligent surface stochastic geometry |
Issue Date | 2024 |
Citation | IEEE Transactions on Wireless Communications, 2024, v. 23, n. 6, p. 6030-6044 How to Cite? |
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. |
Persistent Identifier | http://hdl.handle.net/10722/349990 |
ISSN | 2023 Impact Factor: 8.9 2023 SCImago Journal Rankings: 5.371 |
DC Field | Value | Language |
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dc.contributor.author | Xie, Ziyi | - |
dc.contributor.author | Liu, Yuanwei | - |
dc.contributor.author | Yi, Wenqiang | - |
dc.contributor.author | Wu, Xuanli | - |
dc.contributor.author | Nallanathan, Arumugam | - |
dc.date.accessioned | 2024-10-17T07:02:20Z | - |
dc.date.available | 2024-10-17T07:02:20Z | - |
dc.date.issued | 2024 | - |
dc.identifier.citation | IEEE Transactions on Wireless Communications, 2024, v. 23, n. 6, p. 6030-6044 | - |
dc.identifier.issn | 1536-1276 | - |
dc.identifier.uri | http://hdl.handle.net/10722/349990 | - |
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. | - |
dc.language | eng | - |
dc.relation.ispartof | IEEE Transactions on Wireless Communications | - |
dc.subject | Non-orthogonal multiple access | - |
dc.subject | performance analysis | - |
dc.subject | physical layer security | - |
dc.subject | reconfigurable intelligent surface | - |
dc.subject | stochastic geometry | - |
dc.title | Physical Layer Security for STAR-RIS-NOMA: A Stochastic Geometry Approach | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1109/TWC.2023.3329871 | - |
dc.identifier.scopus | eid_2-s2.0-85177068183 | - |
dc.identifier.volume | 23 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 6030 | - |
dc.identifier.epage | 6044 | - |
dc.identifier.eissn | 1558-2248 | - |