Satellite communication system

Details Satellite communication system Satellite communication system

H - Electricity

04

J

363/11

H04J 3/06 (2006.01) H04B 7/185 (2006.01)

Patent

CA 1253638

TITLE OF THE INVENTION A Satellite Communication System ABSTRACT OF THE DISCLOSURE A satellite communication among a plurality of small earth stations (very small aperture terminal:VSAT) through a satellite is performed by using a relay earth station which has higher power than any of the small earth stations. A signal from an originating small earth station to a destination small earth station, passes through a satellite, a relay earth station, and a satellite by a two hop propagation. Communication is carried out in the digital form. The relay earth station regenerates digital signals from small earth stations. In the process of the regeneration of the digital signals, an error correction technique is applied to reduce the error rate, and a frequency compensation technique is also employed. Thus, high quality of communication at high carrier to noise ratio C/N can be achieved between the small earth stations. A reference clock signal for operating each small earth station is derived from the relay earth station through a reception signal from a satellite.

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