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Identification of the modulation type of a signal

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3 Author(s)
Chan, Y.T. ; Royal Military College of Canada, Kingston, Ontario, Canada ; Gadbois, L. ; Yansouni, P.

It is possible to recognize the modulation type of an unknown signal in noise by its envelope characteristics. A quantity found to be distinctive to a given modulation type is the ratio (R) of the variance of the envelope to the square of the mean of the envelope. Equations of R for four modulation types, as a function of the carrier to noise ratio, are derived and used to set up a classification scheme. The R of a received signal is first computed. Then its modulation type is determined according to the range R falls in. Simulation experiments have confirmed some of the theoretical development as well as the effectiveness of the identification scheme.

Published in:
Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '85.  (Volume:10 )

Date of Conference: Apr 1985

Page(s):
838 - 841
Digital Object Identifier :
10.1109/ICASSP.1985.1168289
Product Type:
Conference Publications

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