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Overview and comparison of on-ground and on-board beamforming techniques in mobile satellite service applications

 
: Tronc, J.; Angeletti, P.; Song, N.; Haardt, M.; Arendt, J.; Gallinaro, G.

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International journal of satellite communications and networking 32 (2014), No.4, pp.291-308
ISSN: 1542-0973
ISSN: 0737-2884
English
Journal Article
Fraunhofer IIS ()

Abstract
The objective of this paper is to review state-of-the-art techniques of beamforming in mobile satellite systems and evaluate the potential benefits/drawbacks of on-ground beamforming compared with on-board beamforming approach. The paper also provides a short analysis of beamforming error sources in on-ground beamforming such as propagation effects at feeder link level, on-board degradations at payload level, differential atmospheric perturbations, and Doppler shift effect. An investigation of signal processing techniques is also performed to provide a preliminary assessment of the interest for employing adaptive beamforming and precoding techniques in multi-spots mobile satellite systems.

: http://publica.fraunhofer.de/documents/N-300353.html