Title :
Regenerative transponder of COMETS for advanced mobile communications experiments
Author :
Isobe, Sunkichi ; Kawamata, Fumio ; Naito, Hideyuki ; Hamamoto, Naokazu ; Ohmori, Shingo
Author_Institution :
Communications Res. Lab., Tokyo, Japan
Abstract :
In order to develop one of key technologies for personal satellite communications, a regenerative transponder has been developed for the Communications and Broadcasting Engineering Test Satellite (COMETS), allowing MM-wave and Ka-band mobile communications. This regenerative MODEM receives eight-channel SCPC continuous or packet signals at a rate of 24 or 4.8 kb/s, transmits one TDM signal with BPSK modulation, and supports special functions such as storing calls in a buffer memory. This technology allows an earth terminal with a 10-cm antenna and a 1-W power amplifier to transmit a 24 kb/s signal via COMETS in Ka-band
Keywords :
buffer storage; microwave power amplifiers; millimetre wave power amplifiers; mobile satellite communication; modems; personal communication networks; phase shift keying; protocols; satellite antennas; satellite ground stations; telecommunication signalling; time division multiplexing; transponders; 1 W; 10 cm; 24 kbit/s; 4.8 kbit/s; BPSK modulation; COMETS; Communications and Broadcasting Engineering Test Satellite; EHF; Ka-band; MM-wave; SCPC; SHF; TDM; advanced mobile communications; buffer memory; earth terminal; personal satellite communications; regenerative MODEM; regenerative transponder; Artificial satellites; Broadcast technology; Mobile communication; Modems; Regeneration engineering; Satellite broadcasting; Satellite communication; Testing; Time division multiplexing; Transponders;
Conference_Titel :
Universal Personal Communications, 1993. Personal Communications: Gateway to the 21st Century. Conference Record., 2nd International Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-1396-8
DOI :
10.1109/ICUPC.1993.528397
