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Beamforming for satellite communications in emergency situations

Sow, Garmy and Besson, Olivier and Boucheret, Marie-Laure and Guiraud, Cécile Beamforming for satellite communications in emergency situations. (2008) European Transactions on Telecommunications, vol. 1 (n° 2). pp. 161-171. ISSN 1124-318X

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Official URL: http://dx.doi.org/10.1002/ett.1265

Abstract

We consider a multi-beam Ka-band satellite communication system aimed at operating in emergency situations where terrestrial communications systems are no longer effective. In contrast to most systems which use one single beam to cover a large area, we study here the feasibility of a one beam per user concept, where a beamformer is calculated for each user. This should allow to guarantee the maximum antenna gain towards each user. We assess the performance of the minimum variance distortionless response (MVDR) beamformer and of a beamformer using a training sequence in realistic scenarios including channel, steering vector and synchronisation errors. We show that both beamformers provide a sufficiently high output signal to noise ratio in a DVB-RCS system.

Item Type:Article
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Université de Toulouse I-Sciences Sociales - UT1
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Alcatel Space Industries Toulouse (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By:Olivier Besson

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