Quadrature Detection Methods for FM Demodulation

Author

Sunny, Sherin ; John, Jaison Varghese ; Apen, T.J.

Author_Institution

Dept. of Electron. & Commun. Eng, Amal Jyothi Coll. of Eng., Kottayam, India

fYear

2013

fDate

29-31 Aug. 2013

Firstpage

433

Lastpage

436

Abstract

The Telecommand system enables the control of launch vehicle during the flight. Command system uses a FM/FSK modulation on a UHF-Band link. In this paper, different quadrature detection methods for FM demodulation like arc tan method, CORDIC vector rotation method etc. are studied and simulated in MATLAB. The Algorithms are then compared based on SNR, frequency spectrum and complexity so as to find out the best algorithm for a telecommand receiver in a spacecraft. Same algorithm is implemented in VHDL also.

Keywords

demodulation; frequency modulation; mean square error methods; space communication links; space vehicles; CORDIC vector rotation method; FM demodulation; FM modulation; FSK modulation; MATLAB; SNR; UHF-band link; arc tan method; frequency spectrum; launch vehicle; quadrature detection methods; spacecraft; telecommand receiver; telecommand system; Baseband; Demodulation; Frequency shift keying; Receivers; Signal to noise ratio; Space vehicles; ARCTAN; CORDIC; FM demodulation; MATLAB; SNR; telecomand receiver;

fLanguage

English

Publisher

ieee

Conference_Titel

Advances in Computing and Communications (ICACC), 2013 Third International Conference on

Conference_Location

Cochin

Type

conf

DOI

10.1109/ICACC.2013.92

Filename

6686424