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Improvement of the chromatic dispersion tolerance in coherent optical OFDM systems using shifted DFT windows for ultra-long-haul optical transmission systems

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dc.contributor.authorSung, Minkyu-
dc.contributor.authorKim, Hoon-
dc.contributor.authorLee, Jaehoon-
dc.contributor.authorJeong, Jichai-
dc.date.accessioned2021-09-05T05:01:49Z-
dc.date.available2021-09-05T05:01:49Z-
dc.date.created2021-06-15-
dc.date.issued2014-09-22-
dc.identifier.issn1094-4087-
dc.identifier.urihttps://scholar.korea.ac.kr/handle/2021.sw.korea/97376-
dc.description.abstractIn a high-capacity ultra-long-haul optical coherent orthogonal frequency-division multiplexing (CO-OFDM) system, the dispersion tolerance is determined by the length of cyclic extension (CE). In this paper, we propose a novel scheme to substantially improve the dispersion tolerance of CO-OFDM systems without increasing the CE length. Multiple time-shifted discrete Fourier transform (DFT) windows are exploited at the receiver, each demodulating only a part of the subcarriers. Effectively, the proposed scheme reduces the bandwidth of the OFDM signals under demodulation. Numerical simulations are performed to show the improved dispersion tolerance of the proposed scheme in comparison with the conventional CO-OFDM system. We show that the dispersion tolerance improves by a factor equal to the number of DFT windows. The tradeoff between the improved dispersion tolerance and increased receiver complexity is also presented. (C) 2014 Optical Society of America-
dc.languageEnglish-
dc.language.isoen-
dc.publisherOPTICAL SOC AMER-
dc.subjectPHASE NOISE-
dc.subjectCOMPENSATION-
dc.subjectFIBER-
dc.titleImprovement of the chromatic dispersion tolerance in coherent optical OFDM systems using shifted DFT windows for ultra-long-haul optical transmission systems-
dc.typeArticle-
dc.contributor.affiliatedAuthorLee, Jaehoon-
dc.contributor.affiliatedAuthorJeong, Jichai-
dc.identifier.doi10.1364/OE.22.023539-
dc.identifier.scopusid2-s2.0-84907532179-
dc.identifier.wosid000342756500126-
dc.identifier.bibliographicCitationOPTICS EXPRESS, v.22, no.19, pp.23539 - 23551-
dc.relation.isPartOfOPTICS EXPRESS-
dc.citation.titleOPTICS EXPRESS-
dc.citation.volume22-
dc.citation.number19-
dc.citation.startPage23539-
dc.citation.endPage23551-
dc.type.rimsART-
dc.type.docTypeArticle-
dc.description.journalClass1-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaOptics-
dc.relation.journalWebOfScienceCategoryOptics-
dc.subject.keywordPlusPHASE NOISE-
dc.subject.keywordPlusCOMPENSATION-
dc.subject.keywordPlusFIBER-
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