Low complex inter-doppler interference mitigation for OTFS systems via global receiver windowing

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dc.authorid0000-0001-9579-9342
dc.authorid0000-0001-9474-7372
dc.contributor.authorTusha, Armed
dc.contributor.authorArslan, Hüseyin
dc.date.accessioned2023-08-08T08:05:25Z
dc.date.available2023-08-08T08:05:25Z
dc.date.issued2023
dc.departmentİstanbul Medipol Üniversitesi, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik ve Elektronik Mühendisliği Bölümü
dc.description.abstractOrthogonal time frequency space (OTFS) waveform has been considered as a potential candidate for affording a wide range of emerging communications and sensing applications in beyond 5G wireless technologies. OTFS takes advantage of both time and frequency selectivity of the doubly dispersive wireless environment, which has been considered as one of the limiting factors in classical wireless communication technologies. However, the performance of OTFS-based wireless systems is severely affected by fractional Doppler that arises due to inevitable and inherent characteristics of the wireless channel taps of not being always integer Doppler values in the delay-Doppler plane. Thus, this results in severe inter-Doppler interference (IDI) and a low channel sparsity in delay-Doppler (DD) domain. To this end, this work introduces a novel receiver (Rx) windowing technique to combat the impact of fractional Doppler on error performance of the OTFS-based transmission with practical pulse shaping filters at the transceiver. Specifically, we introduce a global cyclic prefix (CP) based raised cosine (RC) windowing at Rx in order to alleviate the effect of IDI on the received signal. To do so, the proposed scheme changes the pulse shape of the OTFS signal in DD domain that defines the IDI level and sparsity of the effective channel. Furthermore, we assess the performance of the proposed Rx windowed OTFS (RW-OTFS) scheme under various practical communication scenarios. The obtained numerical and simulation results validate the accuracy of the proposed IDI mitigator for OTFS systems in practical high-mobility scenarios.
dc.identifier.citationTusha, A. ve Arslan, H. (2023). Low complex inter-doppler interference mitigation for OTFS systems via global receiver windowing. IEEE Transactions on Vehicular Technology, 72(6), 7685-7698. https://dx.doi.org/10.1109/TVT.2023.3243577
dc.identifier.doi10.1109/TVT.2023.3243577
dc.identifier.endpage7698
dc.identifier.issn0018-9545
dc.identifier.issn1939-9359
dc.identifier.issue6
dc.identifier.scopus2-s2.0-85149420020
dc.identifier.scopusqualityQ1
dc.identifier.startpage7685
dc.identifier.urihttps://dx.doi.org/10.1109/TVT.2023.3243577
dc.identifier.urihttps://hdl.handle.net/20.500.12511/11282
dc.identifier.volume72
dc.identifier.wos001018210600058en_US
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorTusha, Armed
dc.institutionauthorArslan, Hüseyin
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers Inc.
dc.relation.ispartofIEEE Transactions on Vehicular Technologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.relation.tubitakinfo:eu-repo/grantAgreement/TUBITAK/SOBAG/120C142
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.subjectCSI
dc.subjectDoubly Dispersive Channel
dc.subjectInter-Doppler Interference
dc.subjectML
dc.subjectMMSE
dc.subjectOTFS Transmission
dc.subjectRaised Cosine
dc.subjectReceiver Windowing
dc.titleLow complex inter-doppler interference mitigation for OTFS systems via global receiver windowing
dc.typeArticle

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