Secure Uplink IM-OFDMA With Artificial IQ Imbalance

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dc.authorid0000-0001-5371-3758en_US
dc.authorid0000-0002-5017-5007en_US
dc.authorid0000-0001-6430-3009en_US
dc.authorid0000-0002-0766-9212en_US
dc.contributor.authorAlaca, Ozgur
dc.contributor.authorAlthunibat, Saud
dc.contributor.authorYarkan, Serhan
dc.contributor.authorMiller, Scott L.
dc.contributor.authorQaraqe, Khalid A.
dc.date.accessioned2023-11-08T12:29:37Z
dc.date.available2023-11-08T12:29:37Z
dc.date.issued2023en_US
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractThis study proposes a novel secure uplink index modulation-based orthogonal frequency division multiple access (IM-OFDMA) systems using artificial in-phase and quadrature imbalance (A-IQI). The fact of the distinct A-IQI induced at the users’ end and the unpredictable allocation of users based on confidential data brings a different perspective on physical layer security. Accordingly, in this study, the non-identical effect of A-IQI is exploited to provide a physical-layer security scheme for the IM-OFDMA systems. Specifically, the estimation method is created with preamble data in order to achieve each user’s unique A-IQI information from a legitimate receiver. The A-IQI will help to secure the transmitted data against a potential eavesdropper, and hence, improving data confidentiality. The proposed scheme’s performance is analytically evaluated by deriving closed-form expressions of the average bit error rate (BER) at both the base station and the eavesdropper. The image rejection ratios of A-IQI and practical IQI are provided for IM-OFDMA to indicate the region of intentionally generated A-IQI. Under the different system model specifications of IM-OFDMA, the analytical results are provided with simulation results obtained using the Monte Carlo simulation method. Further, the proposed secure scheme is compared with the state of-the-art artificial noise method. Results reveal a significant improvement in the BER at the base station, accompanied by severe degradation in the BER at the eavesdropper.en_US
dc.identifier.doi10.1109/ACCESS.2023.3284687en_US
dc.identifier.endpage57318en_US
dc.identifier.scopus2-s2.0-85162669776en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage57305en_US
dc.identifier.urihttps://hdl.handle.net/11467/6957
dc.identifier.urihttps://doi.org/10.1109/ACCESS.2023.3284687
dc.identifier.volume11en_US
dc.identifier.wosWOS:001012339800001en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US
dc.relation.ispartofIEEE Accessen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectData confidentiality, IM-OFDMA, index modulation, IQ imbalance, physical layer securityen_US
dc.titleSecure Uplink IM-OFDMA With Artificial IQ Imbalanceen_US
dc.typeArticleen_US

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