ABER Performance of OFDM-IM systems by RIS design in the presence of IQI and ?-? fading

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dc.contributor.authorKarahan, Busra
dc.contributor.authorDeveli, İbrahim
dc.contributor.authorCanbilen, Ayşe Elif
dc.contributor.authorAlsalameh, Hussam
dc.date.accessioned2025-02-24T17:18:42Z
dc.date.available2025-02-24T17:18:42Z
dc.date.issued2024
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü
dc.description.abstractIndex modulation (IM) techniques are among the competitive candidates for fifth-generation and beyond (5GB) systems, offering new ways of conveying information thanks to their advantages such as structure flexibility and hardware convenience. Meanwhile, research on orthogonal frequency division multiplexing (OFDM) performance improvements for next-generation wireless communication systems is still intensively ongoing. Accordingly, the IM system has been adapted to OFDM, which allows additional bits of information to be transmitted through the subcarrier indices of the OFDM. Nevertheless, hardware impairments (HWIs) limit the performance of the transceiver. In the literature, reconfigurable intelligent surface (RIS) technology controls the propagation environment and enhances the quality of the received signal by modifying the phase of the incoming signal. In this paper, we investigate the effects of in-phase (I) and quadrature-phase (Q) imbalance (IQI) on RIS-based OFDM-IM transceivers motivated by the benefits of the RISs. Firstly, we present an RIS-assisted OFDM-IM model subject to transmitter and receiver IQI effects. Next, the average bit error rate (ABER) performance of the RIS-assisted OFDM-IM is calculated by the provided mathematical expressions taking the effect of IQI into account. The simulation outputs show that the designed RIS-supported scheme achieves a performance improvement compared to the traditional OFDM-IM under the effect of IQI.
dc.description.sponsorshipScientific and Technological Research Council of Turkiye (TUBITAK) [122E242]
dc.description.sponsorshipThis work was supported by The Scientific and Technological Research Council of Turkiye (TUBITAK) with research grant: 122E242. We would like to thank the Proofreading & Editing Office of the Dean for Research at Erciyes University for the copyediting and proofreading service for this manuscript.
dc.identifier.doi10.1016/j.jestch.2024.101778
dc.identifier.issn2215-0986
dc.identifier.scopus2-s2.0-85200140994
dc.identifier.scopusqualityN/A
dc.identifier.urihttps://doi.org/10.1016/j.jestch.2024.101778
dc.identifier.urihttps://hdl.handle.net/20.500.14440/810
dc.identifier.volume56
dc.identifier.wosWOS:001288015200001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier - Division Reed Elsevier India Pvt Ltd
dc.relation.ispartofEngineering Science and Technology-An International Journal-Jestech
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250201
dc.subjectReconfigurable intelligent surface (RIS)
dc.subjectIndex modulation (IM)
dc.subjectIn-phase and quadrature-phase imbalance (IQI)
dc.subjectMaximum likelihood (ML)
dc.subjectLog-likelihood ratio (LLR)
dc.titleABER Performance of OFDM-IM systems by RIS design in the presence of IQI and ?-? fading
dc.typeArticle

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