Publication:
Short-Term Power Constrained Cell-Free Massive-MIMO Over Spatially Correlated Ricean Fading

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dc.affiliation.dptoUC3M. Departamento de Teoría de la Señal y Comunicacioneses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Comunicacioneses
dc.contributor.authorFemenias, Guillem
dc.contributor.authorRiera-Palou, Felip
dc.contributor.authorÁlvarez Polegre, Alberto
dc.contributor.authorGarcía-Armada, Ana
dc.contributor.funderMinisterio de Economía y Competitividad (España)es
dc.date.accessioned2021-05-31T09:24:21Z
dc.date.available2021-05-31T09:24:21Z
dc.date.issued2020-12
dc.description.abstractThis paper considers short-term power constrained cell-free massive multiple-input multiple-output (MIMO) scenarios where a large set of multi-antenna access points (APs) provide service to a group of single-antenna mobile stations (MSs) on a spatially correlated multipath environment. Based on a probabilistic approach, the spatially correlated propagation links are modeled using either Ricean or Rayleigh fading channel models that combine a deterministic line-of-sight (LOS) propagation path with a small-scale fading caused by non-line-of-sight (NLOS) multipath propagation. Assuming the use of minimum mean square error (MMSE) channel estimates, closed-form expressions for the downlink (DL) achievable spectral efficiency of a cellfree massive MIMO network with short-term power constraints (i.e., a vector normalized conjugate beamformer (NCB)) are derived and benchmarked against that provided by the conventional cell-free massive MIMO network with long-term power constraints (i.e., the conventional conjugate beamforming (CB)). These expressions, encompassing the effects of spatial antenna correlation, Ricean/Rayleigh fading and pilot contamination, are then used to derive both pragmatic and optimal max-min peruser power allocation strategies and to gain theoretical insight on the performance advantage provided by the use of short-term power constraints instead of the conventional long-term power constrained approach.en
dc.description.sponsorshipThis work was supported in part by the Agencia Estatal de Investigacion (AEI) of Spain under Grants TEC2017-90093-C3-2-R and TEC2017-90093-C3-3-R, and in part by the European Regional Development Fund (ERDF) funds of the European Union (EU) (AEI/FEDER, UE).en
dc.format.extent16
dc.identifier.bibliographicCitationFemenias, G., Riera-Palou, F., Alvarez-Polegre, A. & Garcia-Armada, A. (2020). Short-Term Power Constrained Cell-Free Massive-MIMO Over Spatially Correlated Ricean Fading. IEEE Transactions on Vehicular Technology, 69(12), pp. 15200–15215.en
dc.identifier.doihttps://doi.org/10.1109/TVT.2020.3037009
dc.identifier.issn0018-9545
dc.identifier.publicationfirstpage15200
dc.identifier.publicationissue12
dc.identifier.publicationlastpage15215
dc.identifier.publicationtitleIEEE Transactions on Vehicular Technologyen
dc.identifier.publicationvolume69
dc.identifier.urihttps://hdl.handle.net/10016/32807
dc.identifier.uxxiAR/0000027788
dc.language.isoeng
dc.publisherIEEE
dc.relation.projectIDGobierno de España. TEC2017-90093-C3-2-Res
dc.relation.projectIDGobierno de España. TEC2017-90093-C3-3-Res
dc.rights© 2020, IEEE
dc.rights.accessRightsopen access
dc.subject.ecienciaTelecomunicacioneses
dc.subject.otherCell-free massive MIMOen
dc.subject.otherFavourable propagationen
dc.subject.otherHardening ratioen
dc.subject.otherPower controlen
dc.subject.otherSpatially correlated Ricean fadingen
dc.subject.otherSpectral efficiencyen
dc.titleShort-Term Power Constrained Cell-Free Massive-MIMO Over Spatially Correlated Ricean Fadingen
dc.typeresearch article*
dc.type.hasVersionAM*
dspace.entity.typePublication
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