Precoding Design; User Selection; Multibeam Satellite
Résumé :
[en] Precoding for the downlink of a multibeam satellite system has been recently shown, under ideal conditions, to be promising technique towards employing aggressive frequency reuse gainfully. However, time varying phase uncertainties imposed by the components and the channel, combined with delayed feedback perturbs the channel state information at the transmitter (CSIT). In this paper, we consider a power constrained robust formulation of the downlink precoding problem to counter the phase uncertainties. In particular it considers imposing conditions on the average signal to interference plus noise ratio (SINR), to deal with imperfect CSIT. In addition to the robust formulation, the primacy of user selection is highlighted and a new approach exploiting the satellite system design is proposed. Performance of the derived robust precoder in conjunction with the proposed location based user selection is then evaluated and the gains are tabulated.
Disciplines :
Ingénierie électrique & électronique
Auteur, co-auteur :
GHARANJIK, Ahmad ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
SHANKAR, Bhavani ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
ARAPOGLOU, Pantelis-Daniel ; Ajilon for ESA - European Space Agency > ESTEC > Communications System Engineer
Bengtsson, Mats; KTH Royal Institute of Technology > School of Electrical Engineering > Associate Professor
OTTERSTEN, Björn ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT)
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
Precoding Design and User Selection for Multibeam Satellite Channels
Date de publication/diffusion :
28 juin 2015
Nom de la manifestation :
16th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2015
Organisateur de la manifestation :
IEEE
Lieu de la manifestation :
Stockholm, Suède
Date de la manifestation :
28-6-2015 to 1-7-2015
Manifestation à portée :
International
Titre de l'ouvrage principal :
16th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2015
Peer reviewed :
Peer reviewed
Intitulé du projet de recherche :
Transmission and Reception Techniques for Smart Gateways in Next Generation Satellite Systems
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