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- Title
Fully digital BPSK demodulator for satellite supressed carrier telecommand system.
- Authors
Pereira de Lucena, Antonio Macilio; Prudêncio de Almeida Filho, Magno; Gomes de Figueredo, Caio; Braga Pimentel, Diego; Sales do Nascimento Rios, Clauson; Tavares Ferreira da Silva, Francisco de Assis
- Abstract
In this paper, we present the design of a fully digital binary phase shift keying demodulator for application in satellite high-rate suppressed carrier telecommand system. The proposed system digitalizes the received signal in the intermediate frequency stage using bandpass sampling technique, and the resulting baseband signal is used to synchronization of symbol and phase and to bit detection. The design of all functional modules is presented in details. Another innovation presented in this work is the inclusion of a non-linearity in the phase synchronizer module to permit its operation independent from the signal amplitude. Moreover, aiming the characterization and performance evaluation of the system, we do some original mathematical analyses. Finally, test results show that the demodulator complies all the project requirements, and the prototype implementation loss, in terms of bit energy to noise power density ratio, is less than 0.3 dB. Copyright © 2016 John Wiley & Sons, Ltd.
- Subjects
RADIO detectors; SYNCHRONIZATION; AMPLITUDE modulation; ASTRONAUTICAL communication systems; MODULARITY (Psychology)
- Publication
International Journal of Satellite Communications & Networking, 2017, Vol 35, Issue 4, p359
- ISSN
1542-0973
- Publication type
Article
- DOI
10.1002/sat.1188