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Joint Precoding with Flexible Power Constraints in Multibeam Satellite Systems
SnT -, University of Luxembourg.
SnT -, University of Luxembourg.
KTH, School of Electrical Engineering (EES), Signal Processing. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0003-2298-6774
2011 (English)In: Proceedings Global Communications Conference (GLOBECOM), 2011Conference paper (Refereed)
Abstract [en]

In conventional multibeam satellite systems, frequencyand polarization orthogonalization have been traditionallyemployed for mitigating interbeam interference. However, theparadigm of multibeam joint precoding allows for full frequencyreuse while assisting beam-edge users. In this paper, the performanceof linear beamforming is investigated in terms of meetingtraffic demands. More importantly, generic linear constraints areconsidered over the transmit covariance matrix in order to modelthe power pooling effect which can be implemented throughflexible traveling wave tube amplifiers (TWTAS) or multiportamplifiers. The performance of this scheme is compared againstconventional spotbeam systems based on the rate-balancingobjective. In this context, it is shown that significantly higherspectral efficiency can be achieved through beamforming, whileflexible power constraint offers better rate-balancing.

Place, publisher, year, edition, pages
Keyword [en]
Array signal processing, Context, Joints, Rain fading, Satellite broadcasting, Satellites
National Category
URN: urn:nbn:se:kth:diva-63604DOI: 10.1109/GLOCOM.2011.6134087ScopusID: 2-s2.0-84857229179ISBN: 978-142449268-8OAI: diva2:487710
GLOBECOM 2011. Hilton Americas-Houston Houston, TX, USA. 05 Dec - 09 Dec 2011

QC 20120413

Available from: 2012-01-31 Created: 2012-01-24 Last updated: 2014-09-08Bibliographically approved

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Ottersten, Björn
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Signal ProcessingACCESS Linnaeus Centre

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