Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System
The reconfigurable intelligent surface (RIS) is widely recognized as an effective solution for enhancing security in wireless communications, owing to its passive reflective components and the ability to adjust signal phases. In light of this, this study investigates the physical layer security issu...
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| Format: | Article |
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IEEE
2023-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/10313273/ |
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| author | Tahmid Ahmed A. S. M. Badrudduza S. M. Riazul Islam Sheikh Habibul Islam Md. Ibrahim M. Abdullah-Al-Wadud Imran Shafique Ansari |
| author_facet | Tahmid Ahmed A. S. M. Badrudduza S. M. Riazul Islam Sheikh Habibul Islam Md. Ibrahim M. Abdullah-Al-Wadud Imran Shafique Ansari |
| author_sort | Tahmid Ahmed |
| collection | DOAJ |
| description | The reconfigurable intelligent surface (RIS) is widely recognized as an effective solution for enhancing security in wireless communications, owing to its passive reflective components and the ability to adjust signal phases. In light of this, this study investigates the physical layer security issues for a dual-hop RIS-aided system that makes use of both radio frequency (RF) and free space optical (FSO) connections, while taking into account three different eavesdropping scenarios: i) RF eavesdropping, ii) FSO eavesdropping, and iii) simultaneous RF and FSO eavesdropping. While Nakagami-<inline-formula> <tex-math notation="LaTeX">$m$ </tex-math></inline-formula> distributed fading affects the RF link, Málaga turbulence with pointing error affects the FSO link. The main goal of this research is to guarantee the confidentiality of information, preventing unauthorized access or disclosure. To this end, closed-form expressions are developed for the average secrecy capacity, secrecy outage probability, probability of strictly positive secrecy capacity, and effective secrecy throughput. Monte Carlo simulations are used to verify the precision of these expressions. To further explore the suggested model, the asymptotic formulations of various performance metrics are produced. The impact of different factors, such as fading severity, atmospheric conditions, and detection techniques, on the secrecy performance is analyzed through simulations. Numerical results highlight the significant role of the proposed model in ensuring the security of confidential information and emphasize the substantial impact of key factors on its secrecy performance. |
| first_indexed | 2024-03-10T14:12:42Z |
| format | Article |
| id | doaj.art-69fce68ec3f8496a890249f07175cf11 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-03-10T14:12:42Z |
| publishDate | 2023-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-69fce68ec3f8496a890249f07175cf112023-11-21T00:01:35ZengIEEEIEEE Access2169-35362023-01-011112773712775310.1109/ACCESS.2023.333159310313273Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless SystemTahmid Ahmed0https://orcid.org/0009-0007-9976-4236A. S. M. Badrudduza1https://orcid.org/0000-0003-0895-4450S. M. Riazul Islam2https://orcid.org/0000-0003-2968-9561Sheikh Habibul Islam3https://orcid.org/0000-0002-8697-6666Md. Ibrahim4https://orcid.org/0000-0003-3812-8635M. Abdullah-Al-Wadud5https://orcid.org/0000-0001-6767-3574Imran Shafique Ansari6https://orcid.org/0000-0001-8461-6547Department of Electronics and Telecommunication Engineering, Rajshahi University of Engineering & Technology (RUET), Rajshahi, BangladeshDepartment of Electronics and Telecommunication Engineering, Rajshahi University of Engineering & Technology (RUET), Rajshahi, BangladeshSchool of Natural and Computing Sciences, University of Aberdeen, Aberdeen, U.K.Department of Electrical and Computer Engineering, University of Massachusetts Lowell, Lowell, MA, USAInstitute of ICT, RUET, Rajshahi, BangladeshDepartment of Software Engineering, College of Computer and Information Sciences, King Saud University, Riyadh, Saudi ArabiaJames Watt School of Engineering, University of Glasgow, Glasgow, U.K.The reconfigurable intelligent surface (RIS) is widely recognized as an effective solution for enhancing security in wireless communications, owing to its passive reflective components and the ability to adjust signal phases. In light of this, this study investigates the physical layer security issues for a dual-hop RIS-aided system that makes use of both radio frequency (RF) and free space optical (FSO) connections, while taking into account three different eavesdropping scenarios: i) RF eavesdropping, ii) FSO eavesdropping, and iii) simultaneous RF and FSO eavesdropping. While Nakagami-<inline-formula> <tex-math notation="LaTeX">$m$ </tex-math></inline-formula> distributed fading affects the RF link, Málaga turbulence with pointing error affects the FSO link. The main goal of this research is to guarantee the confidentiality of information, preventing unauthorized access or disclosure. To this end, closed-form expressions are developed for the average secrecy capacity, secrecy outage probability, probability of strictly positive secrecy capacity, and effective secrecy throughput. Monte Carlo simulations are used to verify the precision of these expressions. To further explore the suggested model, the asymptotic formulations of various performance metrics are produced. The impact of different factors, such as fading severity, atmospheric conditions, and detection techniques, on the secrecy performance is analyzed through simulations. Numerical results highlight the significant role of the proposed model in ensuring the security of confidential information and emphasize the substantial impact of key factors on its secrecy performance.https://ieeexplore.ieee.org/document/10313273/Reconfigurable intelligent surfacedual-hop systemeffective secrecy throughputsecrecy outage probability |
| spellingShingle | Tahmid Ahmed A. S. M. Badrudduza S. M. Riazul Islam Sheikh Habibul Islam Md. Ibrahim M. Abdullah-Al-Wadud Imran Shafique Ansari Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System IEEE Access Reconfigurable intelligent surface dual-hop system effective secrecy throughput secrecy outage probability |
| title | Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System |
| title_full | Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System |
| title_fullStr | Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System |
| title_full_unstemmed | Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System |
| title_short | Enhancing Physical Layer Secrecy Performance for RIS-Assisted RF-FSO Mixed Wireless System |
| title_sort | enhancing physical layer secrecy performance for ris assisted rf fso mixed wireless system |
| topic | Reconfigurable intelligent surface dual-hop system effective secrecy throughput secrecy outage probability |
| url | https://ieeexplore.ieee.org/document/10313273/ |
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