Analysis and Compensation of Tx and Rx IQ Imbalances in Uplink IM-OFDMA Systems

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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.accessioned2023-11-07T13:58:21Z
dc.date.available2023-11-07T13:58:21Z
dc.date.issued2023en_US
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractIndex modulation-based orthogonal division multiple access (IM-OFDMA) has recently been proposed as a potential technique for future wireless communication systems due to its su perior spectral efficiency and error performance over conventional multiple access schemes. However, its performance is still under investigation by researchers in light of a variety of scenarios and assumptions. Following this direction, in this Article, the individual and joint effects of the transmitter (Tx) and receiver (Rx) in-phase and quadrature imbalances (IQI) on the bit-error-rate (BER) per formance of the uplink IM-OFDMA scheme are investigated by considering whether each user’s RF front-end is identical or not. Moreover, to reduce the detrimental effect of IQI, a preamble-based estimation and compensation method is proposed for IM-OFDMA. Closed-form expressions for the average BER of IM-OFDMA are obtained by considering the physical effect of the Tx and Rx IQI. Also, using Monte Carlo simulations, the derived expressions are verified under different system configurations. Analytical and sim ulation results reveal that Tx and Rx IQI cause an error floor in the BER performance of IM-OFDMA schemes. However, the proposed estimation and compensation method not only reduces the impact of IQI but also leads to a better BER performance compared to the case of no IQI, which mainly refers to the frequency diversity caused by the IQI.en_US
dc.identifier.doi10.1109/TVT.2023.3272357en_US
dc.identifier.endpage12969en_US
dc.identifier.issue10en_US
dc.identifier.scopus2-s2.0-85159834973en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage12956en_US
dc.identifier.urihttps://hdl.handle.net/11467/6929
dc.identifier.urihttps://doi.org/10.1109/TVT.2023.3272357
dc.identifier.volume72en_US
dc.identifier.wosWOS:001098049700038en_US
dc.identifier.wosqualityQ1en_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 Transactions on Vehicular Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subjectMultiple access, IM-OFDMA, IQ imbalance, estimation and compensationen_US
dc.titleAnalysis and Compensation of Tx and Rx IQ Imbalances in Uplink IM-OFDMA Systemsen_US
dc.typeArticleen_US

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