Independent component analysis for phase and residual frequency offset compensation in OQAM multicarrier systems

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dc.contributor.authorZhao, Jian
dc.contributor.authorTownsend, Paul D.
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderScience and Technology Planning Project of Guangdong Provinceen
dc.contributor.funderGuangzhou Municipal Science and Technology Projecten
dc.contributor.funderFundamental Research Funds for the Central Universitiesen
dc.contributor.funderScience Foundation Irelanden
dc.date.accessioned2021-11-12T14:33:15Z
dc.date.available2021-11-12T14:33:15Z
dc.date.issued2020-03-30
dc.description.abstractPhase noise in the offset quadrature amplitude modulation (OQAM) multicarrier system results in not only constellation rotation but also crosstalk from the unique intrinsic imaginary interference (IMI). Therefore, the method for phase and residual frequency offset (RFO) compensation should be designed specifically to address this. In this article, we exploit the statistical difference of the OQAM signal and the IMI, and propose a novel independent component analysis (ICA) based method for phase and RFO compensation. It is proved that the signal exhibits the minimal entropy with the probability distribution deviating from the Gaussian one the most when the phase is correctly compensated. Several metrics and a recursive algorithm are proposed to separate the signal and the IMI. Simulations and experiments are performed to verify the proposed theory and to compare the ICA method with modified blind phase search (M-BPS), constellation classification (CC), and Kalman filtering (KL). It is shown that the ICA method exhibits significantly better tolerance to the laser linewidth and RFO than CC and KL, and greatly reduces the complexity compared to M-BPS. Therefore, the proposed ICA method can be the most promising solution for phase and RFO compensation in OQAM multicarrier systems.en
dc.description.sponsorshipNational Natural Science Foundation of China (Grant Number: 61971199); Science and Technology Planning Project of Guangdong Province (Grant Number: 2019A050503003); Guangzhou Municipal Science and Technology Project (Grant Number: 201904010298)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationZhao, J. and Townsend, P. D. (2020) 'Independent component analysis for phase and residual frequency offset compensation in OQAM multicarrier systems', Journal of Lightwave Technology, 38(15), pp. 3897-3907. doi: 10.1109/JLT.2020.2983413en
dc.identifier.doi10.1109/JLT.2020.2983413en
dc.identifier.eissn1558-2213
dc.identifier.endpage3907en
dc.identifier.issn0733-8724
dc.identifier.issued15en
dc.identifier.journaltitleJournal of Lightwave Technologyen
dc.identifier.startpage3897en
dc.identifier.urihttps://hdl.handle.net/10468/12210
dc.identifier.volume38en
dc.language.isoenen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)en
dc.relation.projectinfo:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2276/IE/I-PIC Irish Photonic Integration Research Centre/en
dc.rights© 2020 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.subjectCoherent detectionen
dc.subjectOQAMen
dc.subjectPhase noiseen
dc.subjectIndependent component analysisen
dc.titleIndependent component analysis for phase and residual frequency offset compensation in OQAM multicarrier systemsen
dc.typeArticle (peer-reviewed)en
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