Cancellation of external and multiple access interference in cdma systems using antenna arrays

Muñoz Medina, Olga; Fernández Rubio, Juan Antonio

doi:10.1016/S0165-1684(97)00097-2

dc.contributor.author	Muñoz Medina, Olga
dc.contributor.author	Fernández Rubio, Juan Antonio
dc.contributor.other	Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.date.accessioned	2016-12-09T13:18:17Z
dc.date.issued	1997-09
dc.identifier.citation	Muñoz, 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.identifier.issn	0165-1684
dc.identifier.uri	http://hdl.handle.net/2117/97937
dc.description.abstract	This 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.extent	17 p.
dc.language.iso	eng
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subject	Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
dc.subject.lcsh	Telecommunication
dc.subject.other	Multiuser communications
dc.subject.other	Asynchronous DS-CDMA systems
dc.subject.other	Multipath fading
dc.subject.other	Spatial signature estimation
dc.subject.other	Array signal processing
dc.subject.other	Covariance matrix analysis
dc.subject.other	Subspace-based interference suppression
dc.title	Cancellation of external and multiple access interference in cdma systems using antenna arrays
dc.type	Article
dc.subject.lemac	Telecomunicació
dc.contributor.group	Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
dc.identifier.doi	10.1016/S0165-1684(97)00097-2
dc.description.peerreviewed	Peer Reviewed
dc.relation.publisherversion	http://www.sciencedirect.com.recursos.biblioteca.upc.edu/science/article/pii/S0165168497000972
dc.rights.access	Restricted access - publisher's policy
drac.iddocument	1628152
dc.description.version	Postprint (published version)
dc.date.lift	10000-01-01
upcommons.citation.author	Muñoz, O.; Fernandez, J.
upcommons.citation.published	true
upcommons.citation.publicationName	Signal processing
upcommons.citation.volume	61
upcommons.citation.number	2
upcommons.citation.startingPage	113
upcommons.citation.endingPage	129