A flexible digital multicarrier modulator for multi-frequency TDMA satellite transmission

Author

Ventura-Traveset, J. ; Bella, L. ; Bessai, H. ; Hofmann, G.

Author_Institution

ESA-ESTEC, Noordwijk, Netherlands

fYear

1991

fDate

2-5 Dec 1991

Firstpage

505

Abstract

The implementation and test of a flexible digital multi-frequency time division multiple access (MF-TDMA) modulator are presented. The modulator is able to work at several frequencies (frequency hopping) on a burst basis without preambles or guardtimes. After a brief review of some satellite concepts (e.g., MF-TDMA, onboard processor, and traffic efficiency), direct-in-band modulation is introduced as the technique selected for the digital design of this frequency hopping modulator. A mixed Si/GaAs technology has been chosen for the hardware implementation and some tests are presented to show the good performance of the device

Keywords

frequency agility; modulators; satellite relay systems; time division multiple access; GaAs; Si; direct-in-band modulation; flexible digital multicarrier modulator; frequency hopping modulator; hardware implementation; multifrequency TDMA satellite transmission; Costs; Digital modulation; Frequency; Gallium arsenide; Laboratories; Prototypes; Satellite communication; Satellite ground stations; Testing; Time division multiple access;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1991. GLOBECOM '91. 'Countdown to the New Millennium. Featuring a Mini-Theme on: Personal Communications Services

Conference_Location

Phoenix, AZ

Print_ISBN

0-87942-697-7

Type

conf

DOI

10.1109/GLOCOM.1991.188437

Filename

188437