Precoding Design; User Selection; Multibeam Satellite
Abstract :
[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 :
Electrical & electronics engineering
Author, co-author :
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)
External co-authors :
yes
Language :
English
Title :
Precoding Design and User Selection for Multibeam Satellite Channels
Publication date :
28 June 2015
Event name :
16th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2015
Event organizer :
IEEE
Event place :
Stockholm, Sweden
Event date :
28-6-2015 to 1-7-2015
Audience :
International
Main work title :
16th IEEE International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2015
Peer reviewed :
Peer reviewed
Name of the research project :
Transmission and Reception Techniques for Smart Gateways in Next Generation Satellite Systems
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