Random matrices and the impact of imperfect channel knowledge on cooperative base stations

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dc.contributor.authorManolakis, K.
dc.contributor.authorOberli Graf, Christian Robert
dc.contributor.authorJungnickel, V.
dc.date.accessioned2022-05-16T20:30:50Z
dc.date.available2022-05-16T20:30:50Z
dc.date.issued2013
dc.description.abstractBase station cooperation is a very promising technique for reducing inter-cell interference and enhancing spectral efficiency in next generation cellular systems. However, imperfect precoding at the base stations is limiting the potential gains. In this paper, we present a downlink signal model with impaired zero-forcing precoding and analyze self-user signal and inter-user interference. Properties of Wishart-distributed random matrices are used for calculating the average inverse eigenvalues. We provide closed-form expressions for signal to interference ratio (SIR) bounds, which are found inversely proportional to the mean square error of the base station's channel knowledge. Further, it is found that the SIR increases with the ratio of number of base stations to number of users. Numerical evaluation agrees with analytical results.
dc.fuente.origenIEEE
dc.identifier.doi10.1109/SPAWC.2013.6612096
dc.identifier.eisbn9781467355773
dc.identifier.eissn1948-3252
dc.identifier.issn1948-3244
dc.identifier.urihttps://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=6612096
dc.identifier.urihttps://doi.org/10.1109/SPAWC.2013.6612096
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/64002
dc.information.autorucEscuela de ingeniería ; Oberli Graf, Christian Robert ; S/I ; 63125
dc.language.isoen
dc.nota.accesoContenido parcial
dc.pagina.final484
dc.pagina.inicio480
dc.publisherIEEE
dc.relation.ispartofIEEE Workshop on Signal Processing Advances in Wireless Communications (SPAWC) (14° : 2013 : Darmstadt, Alemania)
dc.rightsacceso restringido
dc.subjectNiobium
dc.subjectBase stations
dc.subjectInterference
dc.subjectEigenvalues and eigenfunctions
dc.subjectChannel estimation
dc.subjectDownlink
dc.subjectFading
dc.titleRandom matrices and the impact of imperfect channel knowledge on cooperative base stationses_ES
dc.typecomunicación de congreso
sipa.codpersvinculados63125
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