Title :
Mobile/personal terminals for COMETS advanced mobile satellite communication experiment
Author :
Takeuchi, Makoto ; Hase, Yoshihiro ; Ohuchi, Chiharu ; Mineno, Hitoshi ; Nishida, Masazumi ; Saito, Haruo ; Obara, Noriaki ; Nishigaki, Takanori
Author_Institution :
Commun. Res. Lab., Minist. of Posts & Telecommun., Tokyo, Japan
Abstract :
The Communications Research Laboratory is now developing mobile and personal earth station terminals for an experimental advanced mobile satellite communication system using COMETS, which is scheduled for launch in 1997. The terminals under development are a briefcase-sized handy terminal for low bit-rate voice and a mobile terminal for voice and data. The system used the extremely high frequencies of the Ka-band (31/21 GHz) and the Q-band (47/44 GHz) and one-hop communication links between the terminals. Because of this, the terminal antennas, and countermeasures to rain fall attenuation will play key roles in the system hardware. An on-board regenerative transponder, the world´s first SCPC/TDM type, will also be a key component of the system
Keywords :
data communication; electromagnetic wave absorption; land mobile radio; microwave propagation; millimetre wave propagation; mobile satellite communication; rain; satellite ground stations; telecommunication terminals; time division multiplexing; voice communication; 21 GHz; 31 GHz; 44 GHz; 47 GHz; COMETS; EHF; Ka-band; Q-band; SCPC/TDM; SHF; advanced mobile satellite communication experiment; briefcase-sized handy terminal; data communication; low bit-rate voice; mobile earth station terminals; mobile/personal terminals; onboard regenerative transponder; one-hop communication links; personal earth station terminals; rain fall attenuation countermeasures; terminal antennas; Artificial satellites; Casting; Demodulation; Frequency; Mobile communication; Satellite communication; Satellite ground stations; Space stations; Space technology; Transponders;
Conference_Titel :
Universal Personal Communications. 1995. Record., 1995 Fourth IEEE International Conference on
Conference_Location :
Tokyo
Print_ISBN :
0-7803-2955-4
DOI :
10.1109/ICUPC.1995.497072
