Telecommunications – Carrier wave repeater or relay system – Portable or mobile repeater
Patent
1996-07-30
1998-11-17
Chin, Wellington
Telecommunications
Carrier wave repeater or relay system
Portable or mobile repeater
455427, 455428, 455505, 455506, H04B 7185
Patent
active
058390537
ABSTRACT:
The invention concerns a system for transmission of spatial diversity radio signals via a geostationary main communication satellite and one or more auxiliary satellites "colocated" in the same orbit. The distance between an auxiliary satellite and the main satellite is in the range from 200 km to 400 km. The system includes conventional bidirectional transmission links between terrestrial mobile terminals and the main satellite and between the latter and a terrestrial station. Additionally, unidirectional transmission links are provided between the auxiliary satellites and the main satellite. Applications include a mobile communication service with portable terminals via a geostationary satellite.
REFERENCES:
patent: 4099121 (1978-07-01), Fang
patent: 4218654 (1980-08-01), Ogawa et al.
patent: 5233626 (1993-08-01), Ames
patent: 5319673 (1994-06-01), Briskman
patent: 5410731 (1995-04-01), Rouffet
patent: 5615407 (1997-03-01), Barkats
patent: 5634190 (1997-05-01), Wiedeman
3rd European Conference on Satellite Communications, 2-4 Nov. 1993 Manchester, UK, pp. 246-250, XP 000458015 P. Jung et al.
3rd European Conference on Satellite Communications, 2-4 Nov. 1993 Manchester, UK, pp. 325-329, XP 000458030 C. Cullen et al.
Biglieri Ezio
Bosch Javier Ventura-Traveset
Caire Giuseppe
Yarwood Mike
Agence Spatiale Europeene
Chin Wellington
Sobutka Philip J.
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