Satellite communications system with frequency channelized beams

Details Satellite communications system with frequency channelized beams Satellite communications system with frequency channelized beams

1981-01-12

1984-01-10

Bookbinder, Marc E.

Multiplex communications

Wide area network

Packet switching

370 75, 370 95, 370 97, 455 12, 455 17, 455 25, H04J 400, H04B 7185

Patent

active

044256396

ABSTRACT:
A digital communications satellite (12,44) receives signals from a plurality of narrow input spot-beams (14) of an uplink. It regenerates, multiplexes and routes the signals for transmission in a plurality of narrow output spot-beams (42) of a downlink. The uplink beams (14) each include a plurality of frequency re-use channels (18), while the downlink beams (42) each have only a single wide-band channel. The satellite (12,44) may multiplex the signals either before or after routing them. The spot-beams (14,42) may be fixed or scanning.

REFERENCES:
patent: 3789142 (1974-01-01), Shimasaki et al.
patent: 4105973 (1978-08-01), Arnold et al.
patent: 4145573 (1979-03-01), Arnold
patent: 4215348 (1980-07-01), Cordaro et al.
patent: 4259741 (1981-03-01), Kawai
"The 30/20 GHz Mixed User Architecture Development Study: Executive Summary", pp. 0-1 to 0-21, TRW, Inc., Redondo Beach, Calif., Space Systems Div., Sep. 1979.
"Communications Satellite Developments: Systems"-pp. 139-154, Gilbert E. Lavean et al., Progress in Astronautics and Aeronautics, vol. 41, Apr. 1974.
"An Advanced Mixed User Domestic Satellite System Architecture"-pp. 148-153, 8th AIAA Satellite Conf., Orlando, Fla., 1980.

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