Telecommunication system

H - Electricity – 04 – B

Patent

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H04B 7/204 (2006.01)

Patent

CA 2294626

The invention concerns a telecommunication system wherein the earth is divided into zones (26) within which communications are carried out by transmitting and receiving means located in a spacecraft, such as a satellite assigned to communication for a plurality of zones. The system consists in assigning to zones (26¿10?, 26¿11?, 26¿12?) of a first category (28) signals with a state of polarisation (P¿D?, P¿G?) and carrier frequencies (.DELTA.F¿1?, .DELTA.F¿2?) such that for two adjacent zones of this first category are assigned signals with different states of polarisation and carrier frequencies. In each zone of a second category (30) are assigned signals all the available states of polarisation and carrier frequencies.

L'invention concerne un système de télécommunication dans lequel la terre est divisée en zones (26) à l'intérieur desquelles les communications s'effectuent par l'intermédiaire d'un moyen d'émission et de réception se trouvant dans un engin spatial, tel qu'un satellite, affecté à la communication pour une pluralité de zones. A des zones (2610, 2611, 2612) d'une première catégorie (28) on affecte des signaux ayant un état de polarisation (PD, PG) et des fréquences porteuses (.DELTA.F1, .DELTA.F2) tels qu'à deux zones adjacentes de cette première catégorie soient affectés des signaux ayant des états de polarisation ou des fréquences porteuses différents. Dans chaque zone d'une seconde catégorie (30) on affecte des signaux ayant tous les états de polarisation et toutes les fréquences porteuses disponibles.

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