ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
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3
Issue
vol 60 / MARCH, 2017
Article
UDC 621.391.82

ACCURACY OF DETERMINATION OF DEMODULATOR PARAMETERS IN SYSTEMS WITH QUADRATURE GAIN-PHASE MODULATION

A. Y. Yanushkovsky
St. Petersburg State University of Cinema and Television, Department of Technical Electronics; Post-Graduate Student


A. V. Krivosheikin
Saint Petersburg State University of Film and Television, Saint Petersburg, 191119, Russian Federation; Professor


Abstract. A method is proposed for determination of tolerance on demodulator parameters in digital communication systems with quadrature gain-phase modulation (e.g., in cable digital TV). An expression is derived connecting demodulator parameter deviation with error probability.
Keywords: error probability deviation, quadrature gain-phase modulation, tolerance on parameters, signals spacing, field of signals, quadrature channel, threshold level, sensitivity.