Improving the BER and PAPR performances of conventional OFDM waveform with sequential LLWT-PTS-AC method

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dc.contributor.authorTengizler, Bekir
dc.contributor.authorCaliskan, Efe Kaan
dc.contributor.authorGulbaz, Alihan
dc.contributor.authorOzen, Ali
dc.date.accessioned2025-03-17T12:25:26Z
dc.date.available2025-03-17T12:25:26Z
dc.date.issued2024
dc.departmentTarsus Üniversitesi
dc.description.abstractPurpose: In this study, it is suggested to combine PTS and AC methods with LWT transform using Lazy wavelet to reduce PAPR in wireless communication systems using classical OFDM waveform. A new method combining the PAPR improvement provided by PTS and AC techniques on multi-carrier Communication systems and the BER performance provided by LWT is presented in this study. Theory and Methods: The proposed method is given in Figure A. In Figure A, randomly generated serial input data is modulated in the M-Ary Modulation Block. It is then propagated by applying the inverse Lifting wavelet transform to the data modulated in the ILWT Block. Next, in the PTS Block, the phases of emittedsymbols are changed. Then the phase-changed signals are subjected to IFFT processing. After the IFFT process, the signal with the lowest PAPR value is selected and transmitted to the AC Block by adding CP in the CP+ Block. The produced waveform after clipping processes in the AC Block is sent from the frequency selective channel and reaches the receiving side after the AWGN is distorted. The desired performance criteria are calculated by using the data obtained at the output of the M-Ary De-Modulation Block by applying the opposite of the operations on the transmitter side on the receiver side. Results: When the obtained PAPR results are analyzed, it is understood that the suggested waveform for the 1E-3 PAPR value is 0.5 dB better than the PTS-AC-OFDM waveform and 8 dB better than the K-OFDM waveform. In addition, when the BER performances are examined, it is observed that the suggested waveform for the 1E-4 BER level is 6 dB better than the PTS-AC-OFDM and K-OFDM waveforms. Conclusion: In this article, significant gains were obtained in both BER performances and PAPR performances thanks to the proposed method. Thus, despite the slightly increased computational complexity, the proposed LLWT-PTS-AC-OFDM method has yielded a high-performance next-generation OFDM waveform in this study.
dc.identifier.doi10.17341/gazimmfd.1142173
dc.identifier.issn1300-1884
dc.identifier.issn1304-4915
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85195691697
dc.identifier.scopusqualityQ2
dc.identifier.trdizinid1257937
dc.identifier.urihttps://doi.org/10.17341/gazimmfd.1142173
dc.identifier.urihttps://search.trdizin.gov.tr/tr/yayin/detay/1257937
dc.identifier.urihttps://hdl.handle.net/20.500.13099/1683
dc.identifier.volume39
dc.identifier.wosWOS:001367938600002
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakTR-Dizin
dc.language.isoen
dc.publisherGazi Univ, Fac Engineering Architecture
dc.relation.ispartofJournal of The Faculty of Engineering and Architecture of Gazi University
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20250316
dc.subjectOFDM waveform
dc.subjectPAPR reduction
dc.subjectLifting wavelet transform
dc.subjectPTS
dc.subjectLLWT-PTS-AC
dc.titleImproving the BER and PAPR performances of conventional OFDM waveform with sequential LLWT-PTS-AC method
dc.typeArticle

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