Graduate School and Research Center in Digital Sciences

Transmission robuste de zéro-forçage asymptotiquement optimale pour coopération imparfaite de transmetteurs

Bazco-Nogueras, Antonio; Miretti, Lorenzo; De Kerret, Paul; Gesbert, David; Gresset, Nicolas

GRETSI 2019, 27ème Colloque francophone de traitement du signal et des images, 26-29 August 2019, Lille, France

In this work*we analyze a NetworkMIMO channel with 2 Transmitters (TXs) jointly serving 2 users (RXs), where each TX has a different multi-user Channel State Information (CSI), potentially with a different accuracy at each one of the links TX-RX. It was recently shown that this distributed scenario does reach out to the same Degrees-of-Freedom -or multiplexing gain- as its genie-aided centralized counterpart in which both TXs share the best-quality estimate of each link TX-RX. Nevertheless, the DoF analysis does not provide the actual rate and the rate gap between the centralized and the decentralized settings remained unknown. In this paper, we show that it is possible to achieve asymptotically the same sum rate as that attained by Zero-Forcing precoding in a centralized setting endowed with the best-quality CSI, for any possible CSI allocation at the TXs. This is accomplished thanks to a new precoding scheme that adapts to the CSI allocation.

Document Bibtex

Title:Transmission robuste de zéro-forçage asymptotiquement optimale pour coopération imparfaite de transmetteurs
Type:Conference
Language:English
City:Lille
Country:FRANCE
Date:
Department:Communication systems
Eurecom ref:5981
Copyright: © GRETSI. Personal use of this material is permitted. The definitive version of this paper was published in GRETSI 2019, 27ème Colloque francophone de traitement du signal et des images, 26-29 August 2019, Lille, France and is available at :
Bibtex: @inproceedings{EURECOM+5981, year = {2019}, title = {{T}ransmission robuste de z{\'e}ro-for{\'c}age asymptotiquement optimale pour coop{\'e}ration imparfaite de transmetteurs}, author = {{B}azco-{N}ogueras, {A}ntonio and {M}iretti, {L}orenzo and {D}e {K}erret, {P}aul and {G}esbert, {D}avid and {G}resset, {N}icolas}, booktitle = {{GRETSI} 2019, 27{\`e}me {C}olloque francophone de traitement du signal et des images, 26-29 {A}ugust 2019, {L}ille, {F}rance }, address = {{L}ille, {FRANCE}}, month = {08}, url = {http://www.eurecom.fr/publication/5981} }
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