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dc.contributor.authorSeco Granados, Gonzalo
dc.contributor.authorFernández Rubio, Juan Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned2017-04-25T15:13:42Z
dc.date.available2017-04-25T15:13:42Z
dc.date.issued1999
dc.identifier.citationSeco, G., Fernandez, J. Code-timing synchronization in DS-CDMA systems using space-time diversity. A: Baiona Workshop on Emerging Technologies in Telecommunications. "Fifth Baiona Workshop on Emerging Technologies in Telecommunications: based on the proceedings of a conference organized by the University of Vigo, held at Baiona in September 1999". Baiona: Servicio de Publicaciones Universidad de Vigo, 1999, p. 173-177.
dc.identifier.isbn8-4815-8129-1
dc.identifier.urihttp://hdl.handle.net/2117/103724
dc.description.abstractThe synchronization of a desired user transmitting a known training sequence in a direct-sequence (DS) asynchronous code-division multiple-access (CDMA) sys-tem is addressed. It is assumed that the receiver consists of an arbitrary antenna array and works in a near-far, frequency-nonselective, slowly fading channel. The estimator that we propose is derived by applying the maximum likelihood (ML) principle to a signal model in which the contribution of all the interfering compo-nents (e.g., multiple-access interference, external interference and noise) is modeled as a Gaussian term with an unknown and arbitrary space-time correlation matrix. The main contribution of this paper is the fact that the estimator makes eÆcient use of the structure of the signals in both the space and time domains. Its perfor-mance is compared with the Cramer-Rao Bound, and with the performance of other methods proposed recently that also employ an antenna array but only exploit the structure of the signals in one of the two domains, while using the other simply as a means of path diversity. It is shown that the use of the temporal and spatial structures is necessary to achieve synchronization in heavily loaded systems or in the presence of directional external interference.
dc.format.extent5 p.
dc.language.isoeng
dc.publisherServicio de Publicaciones Universidad de Vigo
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject.lcshTelecommunication
dc.subject.otherSynchronization
dc.subject.otherCDMA
dc.subject.otherAntenna Arrays
dc.subject.otherMaximum Likelihood Estimation
dc.subject.otherSpace-Time Diversity
dc.titleCode-timing synchronization in DS-CDMA systems using space-time diversity
dc.typeConference report
dc.subject.lemacTelecomunicació
dc.contributor.groupUniversitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.identifier.doi10.1016/S0165-1684(01)00074-3
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0165168401000743
dc.rights.accessOpen Access
local.identifier.drac2434111
dc.description.versionPostprint (published version)
local.citation.authorSeco, G.; Fernandez, J.
local.citation.contributorBaiona Workshop on Emerging Technologies in Telecommunications
local.citation.pubplaceBaiona
local.citation.publicationNameFifth Baiona Workshop on Emerging Technologies in Telecommunications: based on the proceedings of a conference organized by the University of Vigo, held at Baiona in September 1999
local.citation.startingPage173
local.citation.endingPage177


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