Detection and equalization of set-partitioned offset-QAM OFDM in IMDD systems

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dc.contributor.authorTownsend, Paul D.
dc.contributor.authorZhao, Jian
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderCentral Government of China
dc.date.accessioned2019-01-07T11:01:59Z
dc.date.available2019-01-07T11:01:59Z
dc.date.issued2018-11-27
dc.date.updated2018-12-10T19:09:14Z
dc.description.abstractWe design the detection algorithm for orthogonal frequency division multiplexing (OFDM) based on set-partitioned offset quadrature amplitude modulation (SP-offset-QAM) in adaptively-loaded intensity modulation and direct detection (IMDD) systems. The algorithm mitigates signal-signal beating interference (SSBI), improves the equalization capability of conventional one-tap equalizers, and reduces the complexity and the required length of training sequence in the decoding of multi-dimensional SP-QAM signals. We experimentally demonstrate adaptively-loaded SP-offset-QAM OFDM over 50-km single-mode fiber to verify the proposed algorithm. It is shown that the modified equalization significantly improves the performance while the SSBI mitigation brings benefits after transmission. The proposed decoding scheme reduces the complexity comparable to that in conventional QAM. It is also shown that SP-offset-QAM OFDM outperforms SP-based conventional QAM and conventional offset-QAM OFDM both at back-to-back and after 50-km transmission, when the algorithm is applied to all schemes.en
dc.description.sponsorshipCentral Government of China (Thousand Talents Program)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZhao, J. and Townsend, P. D. (2018) 'Detection and equalization of set-partitioned offset-QAM OFDM in IMDD systems', IEEE Photonics Technology Letters, 31(1), pp. 70-73. doi:10.1109/LPT.2018.2883538en
dc.identifier.doi10.1109/LPT.2018.2883538
dc.identifier.endpage73en
dc.identifier.issn1041-1135
dc.identifier.issued1en
dc.identifier.journaltitleIEEE Photonics Technology Lettersen
dc.identifier.startpage70en
dc.identifier.urihttps://hdl.handle.net/10468/7258
dc.identifier.volume31en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Investigator Programme/12/IA/1270/IE/Next Generation Photonic Access and Data Communication Systems/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Career Development Award/15/CDA/3652/IE/Technologies towards Flexible High-Capacity Optical Networks/en
dc.rights© 2018, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.en
dc.subjectOFDMen
dc.subjectEqualizersen
dc.subjectDecodingen
dc.subjectQuadrature amplitude modulationen
dc.subjectComplexity theoryen
dc.subjectTrainingen
dc.subjectFinite impulse response filtersen
dc.subjectOrthogonal frequency division multiplexingen
dc.subjectEqualizationen
dc.subjectDetectionen
dc.titleDetection and equalization of set-partitioned offset-QAM OFDM in IMDD systemsen
dc.typeArticle (peer-reviewed)en
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