dc.creator | Simois Tirado, Francisco José | es |
dc.creator | Murillo Fuentes, Juan José | es |
dc.creator | Boloix Tortosa, Rafael | es |
dc.creator | Salamanca, Luis | es |
dc.date.accessioned | 2024-09-27T08:16:43Z | |
dc.date.available | 2024-09-27T08:16:43Z | |
dc.date.issued | 2012-02 | |
dc.identifier.citation | Simois Tirado, F.J., Murillo Fuentes, J.J., Boloix Tortosa, R. y Salamanca, L. (2012). Near the Cramér-Rao bound precoding algorithms for OFDM blind channel estimation. IEEE Transactions on Vehicular Technology, 61 (2), 651-661. https://doi.org/10.1109/TVT.2011.2177872. | |
dc.identifier.issn | 0018-9545 | es |
dc.identifier.issn | 1939-9359 | es |
dc.identifier.uri | https://hdl.handle.net/11441/162973 | |
dc.description.abstract | The authors present a blind channel estimation of cyclic prefix (CP) orthogonal frequency-division multiplexing (OFDM) systems with nonredundant precoding based on secondorder statistics. The study analyzes first the mean square error for the estimation of the covariance matrix of the received symbols. We prove that, for high and medium signal-to-noise ratios (SNRs), the estimation error in the diagonal entries of the covariance matrix exhibits a lower error than that in the off-diagonal elements. This behavior holds for SNR values in digital communication. Contrary to general belief, we prove that the diagonal of this matrix can be used for channel estimation. Hence, we develop a novel algorithm that utilizes this result. We also develop a low-complexity version that provides acceptable results with reduced computational requirements. Finally, we analyze the covariance matrix and propose another new algorithm with noise suppression capabilities. Some experimental results for Rayleigh channels are included to support these conclusions. In addition, they illustrate better performance of the new methods, compared with previous proposals and with the Cramér-Rao bound (CRB). | es |
dc.description.sponsorship | Ministerio de Educación y Ciencia TEC2009-14504-C02-02 | es |
dc.description.sponsorship | Ministerio de Educación y Ciencia 2010 CSD2008-00010 | es |
dc.format | application/pdf | es |
dc.format.extent | 11 p. | es |
dc.language.iso | eng | es |
dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) | es |
dc.relation.ispartof | IEEE Transactions on Vehicular Technology, 61 (2), 651-661. | |
dc.rights | Atribución 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | * |
dc.subject | Blind channel estimation | es |
dc.subject | Cramér-Rao bound (CRB) | es |
dc.subject | Cyclic prefix (CP) | es |
dc.subject | Nonredundant precoding | es |
dc.subject | Orthogonal frequency-division multiplexing (OFDM) | es |
dc.subject | Variance of the estimation of a covariance matrix | es |
dc.title | Near the Cramér-Rao bound precoding algorithms for OFDM blind channel estimation | es |
dc.type | info:eu-repo/semantics/article | es |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Teoría de la Señal y Comunicaciones | es |
dc.relation.projectID | TEC2009-14504-C02-02 | es |
dc.relation.projectID | 2010 CSD2008-00010 | es |
dc.relation.publisherversion | https://ieeexplore.ieee.org/abstract/document/6093984 | es |
dc.identifier.doi | 10.1109/TVT.2011.2177872 | es |
dc.contributor.group | Universidad de Sevilla. TIC-155: Tratamiento de señales y comunicaciones | es |
dc.journaltitle | IEEE Transactions on Vehicular Technology | es |
dc.publication.volumen | 61 | es |
dc.publication.issue | 2 | es |
dc.publication.initialPage | 651 | es |
dc.publication.endPage | 661 | es |
dc.contributor.funder | Ministerio de Educación y Ciencia (MEC). España | es |
dc.contributor.funder | Ministerio de Educación y Ciencia (MEC). España | es |