A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems

Detalhes bibliográficos
Autor(a) principal: Vigelis, Rui Facundo
Data de Publicação: 2007
Outros Autores: Cavalcante, Charles Casimiro
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da Universidade Federal do Ceará (UFC)
Texto Completo: http://www.repositorio.ufc.br/handle/riufc/4111
Resumo: This paper deals with the pilot assisted time-varying channel estimation in orthogonal frequency division multiplexing (OFDM) systems. Since the pilot sub-carrier correlations are rank deficient, an estimation scheme can be implemented by discarding the noise subspace components and filtering the subspace components. The subspace can be estimated by some subspace tracking (ST) algorithm. We propose to implement the subspace components filtering via a QR factorization based algorithm, which is suitable for operating in conjunction with the ST algorithm. The performance of the proposed schemes is verified by simulation in computer.
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spelling A QR factorization based algorithm for pilot assisted channel estimation in OFDM systemsTeleinformáticaMultiplexaçãoThis paper deals with the pilot assisted time-varying channel estimation in orthogonal frequency division multiplexing (OFDM) systems. Since the pilot sub-carrier correlations are rank deficient, an estimation scheme can be implemented by discarding the noise subspace components and filtering the subspace components. The subspace can be estimated by some subspace tracking (ST) algorithm. We propose to implement the subspace components filtering via a QR factorization based algorithm, which is suitable for operating in conjunction with the ST algorithm. The performance of the proposed schemes is verified by simulation in computer.International Conference on Acoustics, Speech, and Signal Processing2012-12-07T14:19:54Z2012-12-07T14:19:54Z2007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectapplication/pdfVIGELIS, R. F. ; CAVALCANTE, C. C. A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems. In: INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH. AND SIGNAL PROCESSING, 32., 2007, Honolulu. Anais... Honolulu: ICASSP, 2007. p. 305-308http://www.repositorio.ufc.br/handle/riufc/4111Vigelis, Rui FacundoCavalcante, Charles Casimiroengreponame:Repositório Institucional da Universidade Federal do Ceará (UFC)instname:Universidade Federal do Ceará (UFC)instacron:UFCinfo:eu-repo/semantics/openAccess2019-12-31T20:27:33Zoai:repositorio.ufc.br:riufc/4111Repositório InstitucionalPUBhttp://www.repositorio.ufc.br/ri-oai/requestbu@ufc.br || repositorio@ufc.bropendoar:2024-09-11T18:49:05.738500Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)false
dc.title.none.fl_str_mv A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
title A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
spellingShingle A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
Vigelis, Rui Facundo
Teleinformática
Multiplexação
title_short A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
title_full A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
title_fullStr A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
title_full_unstemmed A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
title_sort A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems
author Vigelis, Rui Facundo
author_facet Vigelis, Rui Facundo
Cavalcante, Charles Casimiro
author_role author
author2 Cavalcante, Charles Casimiro
author2_role author
dc.contributor.author.fl_str_mv Vigelis, Rui Facundo
Cavalcante, Charles Casimiro
dc.subject.por.fl_str_mv Teleinformática
Multiplexação
topic Teleinformática
Multiplexação
description This paper deals with the pilot assisted time-varying channel estimation in orthogonal frequency division multiplexing (OFDM) systems. Since the pilot sub-carrier correlations are rank deficient, an estimation scheme can be implemented by discarding the noise subspace components and filtering the subspace components. The subspace can be estimated by some subspace tracking (ST) algorithm. We propose to implement the subspace components filtering via a QR factorization based algorithm, which is suitable for operating in conjunction with the ST algorithm. The performance of the proposed schemes is verified by simulation in computer.
publishDate 2007
dc.date.none.fl_str_mv 2007
2012-12-07T14:19:54Z
2012-12-07T14:19:54Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv VIGELIS, R. F. ; CAVALCANTE, C. C. A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems. In: INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH. AND SIGNAL PROCESSING, 32., 2007, Honolulu. Anais... Honolulu: ICASSP, 2007. p. 305-308
http://www.repositorio.ufc.br/handle/riufc/4111
identifier_str_mv VIGELIS, R. F. ; CAVALCANTE, C. C. A QR factorization based algorithm for pilot assisted channel estimation in OFDM systems. In: INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH. AND SIGNAL PROCESSING, 32., 2007, Honolulu. Anais... Honolulu: ICASSP, 2007. p. 305-308
url http://www.repositorio.ufc.br/handle/riufc/4111
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv International Conference on Acoustics, Speech, and Signal Processing
publisher.none.fl_str_mv International Conference on Acoustics, Speech, and Signal Processing
dc.source.none.fl_str_mv reponame:Repositório Institucional da Universidade Federal do Ceará (UFC)
instname:Universidade Federal do Ceará (UFC)
instacron:UFC
instname_str Universidade Federal do Ceará (UFC)
instacron_str UFC
institution UFC
reponame_str Repositório Institucional da Universidade Federal do Ceará (UFC)
collection Repositório Institucional da Universidade Federal do Ceará (UFC)
repository.name.fl_str_mv Repositório Institucional da Universidade Federal do Ceará (UFC) - Universidade Federal do Ceará (UFC)
repository.mail.fl_str_mv bu@ufc.br || repositorio@ufc.br
_version_ 1813028958193582080

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