Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/79961
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dc.contributorDepartment of Electronic and Information Engineering-
dc.creatorXie, LF-
dc.creatorHo, IWH-
dc.creatorSitu, Z-
dc.creatorLu, L-
dc.creatorLu, WD-
dc.date.accessioned2018-12-21T07:14:03Z-
dc.date.available2018-12-21T07:14:03Z-
dc.identifier.issn2169-3536en_US
dc.identifier.urihttp://hdl.handle.net/10397/79961-
dc.language.isoenen_US
dc.publisherInstitute of Electrical and Electronics Engineersen_US
dc.rights© 2018 IEEE. Translations and content mining are permitted for academic research only. Personal use is also permitted, but republication/redistribution requires IEEE permission. See http://www.ieee.org/publications_standards/publications/rights/index.html for more information.en_US
dc.rightsPosted with permission of the publisher.en_US
dc.rightsThe following publication Xie, L. F., Ho, I. W. H., Stiu, Z. H., Lu, L., & Lu, W. D.(2018). Channel-coded physical-layer network coding with OFDM modulation. IEEE Access, 6, 22267-22280 is available at https://dx.doi.org/10.1109/ACCESS.2018.2825429en_US
dc.subjectBelief propagationen_US
dc.subjectCarrier frequency offseten_US
dc.subjectInter-carrier interferenceen_US
dc.subjectOFDMen_US
dc.subjectPhysical-layer network codingen_US
dc.titleChannel-coded physical-layer network coding with OFDM modulationen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage22267en_US
dc.identifier.epage22280en_US
dc.identifier.volume6en_US
dc.identifier.doi10.1109/ACCESS.2018.2825429en_US
dcterms.abstractThis paper addresses the carrier frequency offset (CFO) problem in OFDM modulated physical-layer network coding (PNC) operated in a two-way relay channel (TWRC). CFO, caused by node-motion induced Doppler shifts and/or asynchronous oscillators, induces inter-carrier interference (ICI) between OFDM subcarriers and hence, degrades PNC performance. To mitigate the CFO/ICI effect in PNC, this paper considers channel-coded PNC and focuses on the receiver design at the relay. CFO compensation, signal detection, and channel decoding are the three basic signal processing blocks at the relay node. For the latter two, we consider both a joint and a separate design. For the joint design, we construct a factor graph to integrate channel coding with ICI, and then, propose a scheme based on belief propagation. For the separate design, two low-complexity schemes differing in channel decoding are proposed. Our simulation results, using repeat-accumulate channel codes, reveal that (1) a CFO compensation approach that amounts to positioning the relay's oscillator frequency at the middle of the received frequencies from the two end nodes is bit error rate (BER)-optimal for all the three schemes; (2) the joint design is superior at low SNR and/or high CFO levels; and (3) more importantly, with the joint design, for low-to-medium CFO levels, the BER of the channel-coded PNC is comparable with that of traditional point-to-point communications without CFO, thus manifesting itself as a promising technique in OFDM modulated TWRC with practical CFO constraints.-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationIEEE access, 2018, v. 6, p. 22267-22280-
dcterms.isPartOfIEEE access-
dcterms.issued2018-
dc.identifier.isiWOS:000432576200001-
dc.identifier.scopus2-s2.0-85045310013-
dc.description.validate201812 bcrcen_US
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_IR/PIRAen_US
dc.description.pubStatusPublisheden_US
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