Systems and methods for digital processing of satellite...

H - Electricity – 04 – B

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H04B 7/185 (2006.01)

Patent

CA 2514959

A digital payload [202, 300, 500, 600] for processing a sub-band spectrum received on an uplink beam [204] at a communications satellite [200, 1100] includes a digital channelizer [302], a digital switch matrix [304] and a digital combiner [306]. The digital channelizer divides the sub-band spectrum into a plurality of frequency slices [310] that can be routed by the digital switch matrix [304] to any of a number of receiving ports [312]. A digital combiner [306] receives the frequency slices and re-assembles them to form one or more output sub-bands for transmission on an output beam [216] of the communications satellite. The digital payload may also include an embeddable digital regeneration module [308] configured to demodulate some or all of the sub-band spectrum to extract a digital bitstream therefrom. The digital bitstream may be processed to implement code-based multiplexing, switching, access control, and other features.

L'invention concerne une charge utile numérique [202, 300, 500, 600] permettant de traiter un spectre sous-bande reçu sur un faisceau de liaison montante [204] d'un satellite de communications [200, 1100] et comprenant un canaliseur numérique [302], une matrice de commutation numérique [304] et un multiplexeur numérique [306]. Ce canaliseur numérique divise le spectre de sous-bande en une pluralité de tranches de fréquence [310] qui peuvent être acheminées par la matrice de commutation numérique [304] vers n'importe lequel des ports de réception [312]. Un multiplexeur numérique [306] reçoit les tranches de fréquence et les assemble à nouveau afin de former au moins une sous-bande de sortie pour la transmission sur un faisceau de sortie [216] du satellite de communication. La charge utile numérique peut également comprendre un module de régénération numérique intégrable [308] configuré pour démoduler une partie ou l'ensemble du spectre de sous-bande afin d'en extraire un train de bits. Ce train de bits numérique peut être traité afin de mettre en place un multiplexage fondé sur les codes, une commutation, un contrôle d'accès, et d'autres caractéristiques.

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