Physical layer security using two-path successive relaying
Relaying is one of the useful techniques to enhance wireless physical-layer security. Existing literature shows that employing full-duplex relay instead of conventional half-duplex relay improves secrecy capacity and secrecy outage probability, but this is at the price of sophisticated implementatio...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2016
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| Online Access: | http://eprints.utm.my/71156/1/LiauQianYu2016_PhysicalLayerSecurityUsingTwoPath.pdf |
| _version_ | 1796861723626438656 |
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| author | Liau, Q. Y. Leow, C. Y. Ding, Z. |
| author_facet | Liau, Q. Y. Leow, C. Y. Ding, Z. |
| author_sort | Liau, Q. Y. |
| collection | ePrints |
| description | Relaying is one of the useful techniques to enhance wireless physical-layer security. Existing literature shows that employing full-duplex relay instead of conventional half-duplex relay improves secrecy capacity and secrecy outage probability, but this is at the price of sophisticated implementation. As an alternative, two-path successive relaying has been proposed to emulate operation of full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. Analytical results reveal that the use of two half-duplex relays in the proposed scheme contributes towards a quadratically lower probability of interception compared to full-duplex relaying. Numerical simulations show that the proposed protocol achieves the ergodic achievable secrecy rate of full-duplex relaying while delivering the lowest probability of interception and secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes. |
| first_indexed | 2024-03-05T20:00:44Z |
| format | Article |
| id | utm.eprints-71156 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T20:00:44Z |
| publishDate | 2016 |
| publisher | MDPI AG |
| record_format | dspace |
| spelling | utm.eprints-711562017-11-15T01:27:19Z http://eprints.utm.my/71156/ Physical layer security using two-path successive relaying Liau, Q. Y. Leow, C. Y. Ding, Z. TK Electrical engineering. Electronics Nuclear engineering Relaying is one of the useful techniques to enhance wireless physical-layer security. Existing literature shows that employing full-duplex relay instead of conventional half-duplex relay improves secrecy capacity and secrecy outage probability, but this is at the price of sophisticated implementation. As an alternative, two-path successive relaying has been proposed to emulate operation of full-duplex relay by scheduling a pair of half-duplex relays to assist the source transmission alternately. However, the performance of two-path successive relaying in secrecy communication remains unexplored. This paper proposes a secrecy two-path successive relaying protocol for a scenario with one source, one destination and two half-duplex relays. The relays operate alternately in a time division mode to forward messages continuously from source to destination in the presence of an eavesdropper. Analytical results reveal that the use of two half-duplex relays in the proposed scheme contributes towards a quadratically lower probability of interception compared to full-duplex relaying. Numerical simulations show that the proposed protocol achieves the ergodic achievable secrecy rate of full-duplex relaying while delivering the lowest probability of interception and secrecy outage probability compared to the existing half duplex relaying, full duplex relaying and full duplex jamming schemes. MDPI AG 2016 Article PeerReviewed application/pdf en http://eprints.utm.my/71156/1/LiauQianYu2016_PhysicalLayerSecurityUsingTwoPath.pdf Liau, Q. Y. and Leow, C. Y. and Ding, Z. (2016) Physical layer security using two-path successive relaying. Sensors (Switzerland), 16 (6). ISSN 1424-8220 https://www.scopus.com/inward/record.uri?eid=2-s2.0-84973596241&doi=10.3390%2fs16060846&partnerID=40&md5=1a85cdf95007b41fa34c3048ff42f4f5 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Liau, Q. Y. Leow, C. Y. Ding, Z. Physical layer security using two-path successive relaying |
| title | Physical layer security using two-path successive relaying |
| title_full | Physical layer security using two-path successive relaying |
| title_fullStr | Physical layer security using two-path successive relaying |
| title_full_unstemmed | Physical layer security using two-path successive relaying |
| title_short | Physical layer security using two-path successive relaying |
| title_sort | physical layer security using two path successive relaying |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| url | http://eprints.utm.my/71156/1/LiauQianYu2016_PhysicalLayerSecurityUsingTwoPath.pdf |
| work_keys_str_mv | AT liauqy physicallayersecurityusingtwopathsuccessiverelaying AT leowcy physicallayersecurityusingtwopathsuccessiverelaying AT dingz physicallayersecurityusingtwopathsuccessiverelaying |