Ergodic Secrecy Rate Analysis and Optimal Power Allocation for Symbiotic Radio Networks

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorAl-nahari, Azzamen_US
dc.contributor.authorJantti, Rikuen_US
dc.contributor.authorZheng, Ganen_US
dc.contributor.authorMishra, Deepaken_US
dc.contributor.authorNie, Mingchengen_US
dc.contributor.departmentDepartment of Information and Communications Engineeringen
dc.contributor.groupauthorCommunication Engineeringen
dc.contributor.organizationUniversity of Warwicken_US
dc.contributor.organizationUniversity of New South Walesen_US
dc.date.accessioned2023-09-06T06:03:20Z
dc.date.available2023-09-06T06:03:20Z
dc.date.issued2023en_US
dc.descriptionPublisher Copyright: Author
dc.description.abstractIn this paper, we address the challenge of establishing secure communication within a symbiotic radio (SR) network. This network comprises a primary transmitter (PT), a primary receiver (PR), a passive backscatter device (BD), and an eavesdropper (ED) attempting to intercept the BD's transmitted information signal. The PT simultaneously transmits an information-bearing signal to the PR and artificial noise (AN) to confound the ED. The objective is that the BD conveys confidential information to the PR by leveraging the PT's signal. The PR performs joint decoding of both the symbols transmitted by the PT and the BD. In this system configuration, we derive a closed-form expression for the ergodic secrecy rate of the BD, providing an analytical framework for evaluating its security performance. Furthermore, we derive an expression for the secrecy rate in the asymptotic regime characterized by a large number of transmit antennas. These derived expressions allow us to optimize both the reflection coefficient and power allocation factor, enabling the maximization of the BD's ergodic secrecy rate while considering the quality of service (QoS) requirements of the primary system. The derived analytical results provide valuable insights into the influence of key system parameters on the secrecy performance. Notably, the derived analytical results quantify the effect of key system parameters on the secrecy performance. In particular, we show that the using AN can always improve the secrecy rate given the QoS constraints of the primary user. Moreover, we show that the secrecy rate can be improved by increasing the reflection coefficient at the BD even with better channel condition for the ED than the legitimate link.en
dc.description.versionPeer revieweden
dc.format.extent11
dc.format.extent82327-82337
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationAl-nahari, A, Jantti, R, Zheng, G, Mishra, D & Nie, M 2023, ' Ergodic Secrecy Rate Analysis and Optimal Power Allocation for Symbiotic Radio Networks ', IEEE Access, vol. 11, pp. 82327-82337 . https://doi.org/10.1109/ACCESS.2023.3301186en
dc.identifier.doi10.1109/ACCESS.2023.3301186en_US
dc.identifier.issn2169-3536
dc.identifier.otherPURE UUID: a22dce19-1442-4b42-8425-2371509418been_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/a22dce19-1442-4b42-8425-2371509418been_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85166744942&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/118466402/Ergodic_Secrecy_Rate_Analysis_and_Optimal_Power_Allocation_for_Symbiotic_Radio_Networks.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/123342
dc.identifier.urnURN:NBN:fi:aalto-202309065707
dc.language.isoenen
dc.publisherIEEE
dc.relation.ispartofseriesIEEE Accessen
dc.relation.ispartofseriesVolume 11en
dc.rightsopenAccessen
dc.subject.keywordartificial noiseen_US
dc.subject.keywordBackscatteren_US
dc.subject.keywordCommunication systemsen_US
dc.subject.keywordergodic secrecy rateen_US
dc.subject.keywordphysical layer securityen_US
dc.subject.keywordQuality of serviceen_US
dc.subject.keywordReceiversen_US
dc.subject.keywordResource managementen_US
dc.subject.keywordSymbiosisen_US
dc.subject.keywordSymbiotic radioen_US
dc.subject.keywordSymbolsen_US
dc.titleErgodic Secrecy Rate Analysis and Optimal Power Allocation for Symbiotic Radio Networksen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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