A new FWHT-CMF-DFE based approach for channel equalization in CP-free OFDM systems

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dc.contributor.authorAykırı, Gazihan
dc.contributor.authorAvcı, Büşra
dc.contributor.authorSavaşcıhabeş, Asuman
dc.contributor.authorÖzen, Ali
dc.date.accessioned2025-02-24T16:35:47Z
dc.date.available2025-02-24T16:35:47Z
dc.date.issued2021
dc.departmentFakülteler, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü
dc.description.abstractOrthogonal frequency division multiplexing (OFDM) has been widely used in wireless communication systems due to its robustness against the frequency selectivity of fading channels. It provides optimal performance and it also meets the requirements of the next generation communication systems. Although OFDM has these advantages, its spectrum efficiency is usually degraded significantly due to the use of cyclic prefix (CP). In this paper, motivated to deal with this issue, the combined structure of Fast Walsh-Hadamard Transform (FWHT) and Time Domain Equalizer (TDE) is proposed to use in CP-free OFDM systems. The results validated by Monte Carlo simulations decipher the improved performances in terms of spectral efficiencies, bit error rate, peak to average power ratio and out of band emission for using this structure over frequency selective multipath fading channels in CP-free OFDM systems. The acquired simulation results have illustrated that the proposed method provides 20% spectral efficiency without compromising the BER performance. © 2021 The Authors. IET Communications published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology
dc.identifier.doi10.1049/cmu2.12248
dc.identifier.endpage2150
dc.identifier.issn1751-8628
dc.identifier.issue17
dc.identifier.scopus2-s2.0-85116680021
dc.identifier.scopusqualityQ2
dc.identifier.startpage2139
dc.identifier.urihttps://doi.org/10.1049/cmu2.12248
dc.identifier.urihttps://hdl.handle.net/20.500.14440/568
dc.identifier.volume15
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherJohn Wiley and Sons Inc
dc.relation.ispartofIET Communications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_Scopus_20250201
dc.subjectBit error rate
dc.subjectEfficiency
dc.subjectEqualizers
dc.subjectFrequency selective fading
dc.subjectHadamard transforms
dc.subjectMonte Carlo methods
dc.subjectMultipath fading
dc.subjectChannel equalization
dc.subjectFast Walsh-Hadamard transforms
dc.subjectFrequency selective multipath fading channels
dc.subjectFrequency selectivity
dc.subjectPeak to average power ratio
dc.subjectSpectral efficiencies
dc.subjectTime-domain equalizers
dc.subjectWireless communication system
dc.subjectOrthogonal frequency division multiplexing
dc.titleA new FWHT-CMF-DFE based approach for channel equalization in CP-free OFDM systems
dc.typeArticle

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