Multi-carrier demodulator for the on-board processing T-SAT land mobile payload

Author

Yim, W.H. ; Kwan, C.C.D. ; Coakley, F.P. ; Evans, B.G.

Author_Institution

Surrey Univ., Guildford, UK

fYear

1988

fDate

17-19 Oct 1988

Firstpage

254

Lastpage

258

Abstract

Future mobile satellite systems will require the use of multibeam satellites with onboard processing and are likely to use the very efficient SCPC/FDMA-TDM access techniques. A key on-board subsystem for such satellites is the multicarrier demodulator (MCD) for data regeneration. Digital implementations are pursued because of the potentially compact size and low power consumption. An MCD comprises a transmultiplexer (TMUX) for demultiplexing/down sampling, and independent channel demodulators. The authors present the results of a study to optimise the design of the transmultiplexer for mobile systems and use the results to design a complete 4×16 kb/s MCD unit for the T-SAT land mobile payload, employing TMS320C25 signal processor technology

Keywords

computerised signal processing; demodulators; digital signal processing chips; frequency division multiplexing; mobile radio systems; satellite relay systems; time division multiplexing; 16 kbit/s; FDMA; SCPC; T-SAT land mobile payload; TDM; TMS320C25 signal processor; TMUX; data regeneration; demultiplexing; down sampling; independent channel demodulators; mobile satellite systems; multibeam satellites; multicarrier demodulator; onboard processing; transmultiplexer;

fLanguage

English

Publisher

iet

Conference_Titel

Satellite Systems for Mobile Communications and Navigation, 1988., Fourth International Conference on

Conference_Location

London

Print_ISBN

0-85296-367-X

Type

conf

Filename

10442