Title :
A TDMA satellite communication system for ISDN services
Author :
Kato, Shuzo ; Morikura, Masahiro ; Kubota, Shuji ; Kazama, Hiroshi ; Enomoto, Kiyoshi ; Umehira, Masahiro
Author_Institution :
NTT Radio Commun. Syst. Lab., Take Yokosuka, Japan
fDate :
2/1/1992 12:00:00 AM
Abstract :
The authors propose a TDMA (time-division multiple-access) satellite communication system suitable for both basic and primary ISDN services in addition to B-channel transmission lines among ISDN switches. To provide these services economically and efficiently, the proposed system uses an offset quadrature phase-shift keying (QPSK) burst model coupled with high-coding gain and rate-forward-error correction, demand assignment technology for each data burst, and a transmission and reception transponder (carrier) hopping scheme. To realize cost-effective transmission and subscriber lines and to increase the reliability of TDMA terminals, the major functions of TDMA terminals have been implemented in large-scale integrated circuits (LSICs), monolithic ICs (MICs) and hybrid ICs (HICs). The experimental results show narrow spectrum transmission with little bit error probability degradation for the offset QPSK burst modem and perfect operation of demand assignment and carrier hopping capability of the system
Keywords :
ISDN; demand assigned multiple access; error correction; frequency agility; modems; phase shift keying; satellite relay systems; time division multiple access; B-channel transmission lines; HIC; ISDN services; LSI; MIC; TDMA satellite communication; TDMA terminals; carrier hopping; demand assignment; high-coding gain; narrow spectrum transmission; offset QPSK burst modem; quadrature phase-shift keying; rate-forward-error correction; subscriber lines; time-division multiple-access; Communication switching; Coupling circuits; Hybrid integrated circuits; ISDN; Phase shift keying; Quadrature phase shift keying; Satellite communication; Switches; Time division multiple access; Transmission lines;
Journal_Title :
Selected Areas in Communications, IEEE Journal on
