Modified conjugate beamforming for cell-free massive MIMO

We present a modification of conjugate beamforming for the forward link of cell-free massive MIMO networks. This modification eliminates the self-interference and yields a performance that, without forward pilots, closely approaches what would be achieved with such pilots in place. The simplicity of...

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Detalles Bibliográficos
Autores: Attarifar, Masoud, Abbasfar, Aliazam, Lozano Solsona, Angel
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2019
País:España
Institución:Universitat Pompeu Fabra
Repositorio:Repositorio Digital de la UPF
OAI Identifier:oai:repositori.upf.edu:10230/37118
Acceso en línea:http://hdl.handle.net/10230/37118
http://dx.doi.org/10.1109/LWC.2018.2890470
Access Level:acceso abierto
Palabra clave:Cell-free networks
Massive MIMO
Conjugate beamforming
Power allocation
Descripción
Sumario:We present a modification of conjugate beamforming for the forward link of cell-free massive MIMO networks. This modification eliminates the self-interference and yields a performance that, without forward pilots, closely approaches what would be achieved with such pilots in place. The simplicity of conjugate beamforming is preserved, with no need for matrix inversions, at the expense of fading-rate coordination among the access points.