Title :
Broadband mobile satellite communication system by LEO-SATs and optical ISLs
Author :
Fujise, Masayuki ; Nohara, Mitsuo ; Uehara, Kiyohiko ; Chujo, Wataru
Author_Institution :
ATR Optical & Radio Commun. Res. Lab., Kyoto, Japan
Abstract :
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
Keywords :
broadband networks; mobile radio systems; optical links; satellite relay systems; 0.83 micron; 1 m; 155 kbit/s; 2.5 Gbit/s; 20 mW; 30 cm; 3000 km; 5 cm; 64 kbit/s; Ka-band steerable multispot beams; L-band fixed multibeams; LEO-SAT; antenna; broadband mobile satellite communication system; low-Earth-orbit satellites; mobile terminal; optical intersatellite links; output power; Artificial satellites; Broadband communication; Low earth orbit satellites; Mobile antennas; Narrowband; Power generation; Power lasers; Satellite antennas; Satellite communication; Wideband;
Conference_Titel :
Global Telecommunications Conference, 1992. Conference Record., GLOBECOM '92. Communication for Global Users., IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0608-2
DOI :
10.1109/GLOCOM.1992.276535
