DocumentCode :
2777740
Title :
Adaptive beamforming for large arrays in satellite communications
Author :
Montesinos, Julien ; Besson, Olivier ; Guiraud, Cécile
Author_Institution :
TESA, Toulouse
fYear :
2008
fDate :
5-11 July 2008
Firstpage :
1
Lastpage :
4
Abstract :
In this paper, we focus on adaptive beamforming applied to a geostationary satellite system working in the Ka-band. Given a user of interest, all users of the system using the same frequency appear as jammers. Unknown sources might also interfere with the system. Adaptive beamforming provides the system with the suppression of interferences. Given the high number of sensors, computational load must be accounted. Our goal is therefore to design adaptive beamformers that yield the best signal-to-interference-plus-noise ratio (SINR) at lower possible cost. We present in this paper a reduced-rank adaptive beam- former: the iterative Conjugate Gradient (CG), and we compare its performances to those of a new adaptive beamformer using orthogonal projections and prior knowledge of the directions-of-arrival (DOA) of the sources.
Keywords :
antenna arrays; array signal processing; direction-of-arrival estimation; gradient methods; interference suppression; jamming; satellite communication; adaptive beamforming; directions-of-arrival; geostationary satellite system; interferences suppression; iterative conjugate gradient; jammers; orthogonal projections; satellite communications; signal-to-interference-plus-noise ratio; Adaptive arrays; Adaptive systems; Array signal processing; Costs; Frequency; Interference suppression; Jamming; Satellite communication; Signal design; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
Type :
conf
DOI :
10.1109/APS.2008.4619901
Filename :
4619901
Link To Document :
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