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Broadband mobile satellite communication system by LEO-SATs and optical ISLs

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4 Author(s)
Fujise, M. ; ATR Optical & Radio Commun. Res. Lab., Kyoto, Japan ; Nohara, M. ; Uehara, K. ; Chujo, W.

The concept of a broadband mobile satellite communication system employing low-Earth-orbit satellites (LEO-SATs) and optical intersatellite links is proposed. L-band fixed multibeams and Ka-band steerable multispot beams are used for 64-kb/s narrowband and 155-kb/s wideband mobile user/satellite links, respectively. Link budget calculations show that a mobile terminal with a 5-cm-diameter antenna and an output power of several watts can establish both L-band 64-kb/s and Ka-band 155-Mb/s channels when 30-cm-diameter L-band and 1-m-diameter Ka-band satellite antennas are used. For an optical intersatellite link (ISL) using a 0.83-μm laser, the required laser power is 20 mW for 2.5-Gb/s transmission over 3000 km with a 20-cm-diameter antenna

Published in:

Global Telecommunications Conference, 1992. Conference Record., GLOBECOM '92. Communication for Global Users., IEEE

Date of Conference:

6-9 Dec 1992