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A Time Domain Channel Estimation Scheme for Equalize-and-Forward Relay-Assisted Systems

2010-09Conference paper Open access
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datacite.subject.fosCiências Naturais::Matemáticas
datacite.subject.fosEngenharia e Tecnologia::Engenharia Eletrotécnica, Eletrónica e Informática
datacite.subject.fosCiências Naturais::Ciências da Computação e da Informação
datacite.subject.sdg03:Saúde de Qualidade
datacite.subject.sdg10:Reduzir as Desigualdades
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
dc.contributor.authorNeves, D.
dc.contributor.authorRibeiro, C.
dc.contributor.authorSilva, A.
dc.contributor.authorGameiro, A.
dc.date.accessioned2025-11-05T17:17:30Z
dc.date.available2025-11-05T17:17:30Z
dc.date.issued2010-09
dc.descriptionFonte: https://www.researchgate.net/publication/221640832_A_Time_Domain_Channel_Estimation_Scheme_for_Equalize-and-Forward_Relay-Assisted_Systems
dc.description.abstractIn this paper we propose a scheme with a dedicated relay node for an OFDM-based system. We consider an antenna array at the base station and a single antenna at both the user terminal and the relay node. The relay-assisted protocol considered is equalize-and-forward. The proposed scheme requires the computation of parameters which depend on unknown variables at the destination and we show that under some assumptions the scheme is suitable to provide all those requirements. Also, we show that since the pilots at the relay node are properly designed the TD-MMSE estimator can still provide the required channel estimate. The system performance is evaluated by considering a typical pedestrian scenario based on WiMAX specification. The results show that the degradation in the estimator performance is negligible.eng
dc.description.sponsorshipThe authors wish to acknowledge the support of the European project Enhanced Wireless Communication Systems Employing Cooperative Diversity – CODIV, FP7/ICT/2007/215477, Portuguese Cooperative and Antenna Diversity for Broadband Wireless Networks – CADWIN, PTDC/EEA–TEL/099241/2008 and Portuguese Foundation for Science and Technology (FCT) grant for the first author.
dc.identifier.citationD. Neves, C. Ribeiro, A. Silva and A. Gameiro, "A Time Domain Channel Estimation Scheme for Equalize-and-Forward Relay-Assisted Systems," 2010 IEEE 72nd Vehicular Technology Conference - Fall, Ottawa, ON, Canada, 2010, pp. 1-5, doi: https://doi.org/10.1109/VETECF.2010.5594290.
dc.identifier.doi10.1109/vetecf.2010.5594290
dc.identifier.eissn1090-3038
dc.identifier.isbn978-1-4244-3573-9
dc.identifier.issn0740-0551
dc.identifier.urihttp://hdl.handle.net/10400.8/14531
dc.language.isoeng
dc.peerreviewedyes
dc.publisherIEEE Canada
dc.relation.hasversionhttps://ieeexplore.ieee.org/document/5594290
dc.relation.ispartof2010 IEEE 72nd Vehicular Technology Conference - Fall
dc.rights.uriN/A
dc.subjectOFDM systems
dc.subjectcooperative schemes
dc.subjectPilot– aided channel estimation
dc.subjectequalize–and–forward/estimate–and– forward relaying protocol
dc.titleA Time Domain Channel Estimation Scheme for Equalize-and-Forward Relay-Assisted Systemseng
dc.typeconference paper
dspace.entity.typePublication
oaire.citation.conferenceDate2010-09
oaire.citation.conferencePlaceOttawa, Ontario, Canada
oaire.citation.titleIEEE Vehicular Technology Conference
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameRibeiro
person.givenNameCarlos
person.identifier.orcid0000-0001-7484-6779
relation.isAuthorOfPublicationa388f639-664e-435c-8e1a-d6aee9213f70
relation.isAuthorOfPublication.latestForDiscoverya388f639-664e-435c-8e1a-d6aee9213f70

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In this paper we propose a scheme with a dedicated relay node for an OFDM-based system. We consider an antenna array at the base station and a single antenna at both the user terminal and the relay node. The relay-assisted protocol considered is equalize-and-forward. The proposed scheme requires the computation of parameters which depend on unknown variables at the destination and we show that under some assumptions the scheme is suitable to provide all those requirements. Also, we show that since the pilots at the relay node are properly designed the TD-MMSE estimator can still provide the required channel estimate. The system performance is evaluated by considering a typical pedestrian scenario based on WiMAX specification. The results show that the degradation in the estimator performance is negligible.
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