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dc.contributor.authorMuñoz Medina, Olga
dc.contributor.authorFernández Rubio, Juan Antonio
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationMuñoz, O., Fernandez, J. Cancellation of external and multiple access interference in cdma systems using antenna arrays. "Signal processing", Setembre 1997, vol. 61, núm. 2, p. 113-129.
dc.description.abstractThis paper deals with the problem of multisensor-multiuser detection in CDMA systems in the presence of interferences external to the system. The paper presents a new method able to estimate the spatial signature of all active users projected onto the subspace orthogonal to the external interference. With this information a specific beamformer can be designed for each user in order to combat the external and multiple access interference. The method performs in frequency non-selective multipath scenarios as they arise from some CDMA satellite and indoor communications systems. The estimation process does not require any training signal nor any a priori spatial information. It exploits the temporal structure of CDMA signals and extract the required information directly from the received signals. In addition, the method is independent of the nature of the external interference and it can cope with narrow-band and wide-band interfering signals.
dc.format.extent17 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject.otherMultiuser communications
dc.subject.otherAsynchronous DS-CDMA systems
dc.subject.otherMultipath fading
dc.subject.otherSpatial signature estimation
dc.subject.otherArray signal processing
dc.subject.otherCovariance matrix analysis
dc.subject.otherSubspace-based interference suppression
dc.titleCancellation of external and multiple access interference in cdma systems using antenna arrays
dc.contributor.groupUniversitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorMuñoz, O.; Fernandez, J.
local.citation.publicationNameSignal processing

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