An improved energy demodulation algorithm using splines

Author

Dimitriadis, Dimitrios ; Maragos, Petros

Author_Institution

Dept. of Electr. & Comput. Eng., Nat. Tech. Univ. of Athens, Greece

Volume

6

fYear

2001

fDate

2001

Firstpage

3481

Abstract

A new algorithm is proposed for demodulating discrete-time AM-FM signals, which first interpolates the signals with smooth splines and then uses the continuous-time energy separation algorithm (ESA) based on the Teager-Kaiser energy operator. This spline-based ESA retains the excellent time resolution of the ESA based on discrete energy operators but performs better in the presence of noise. Further, its dependence on smooth splines allows some optimal trade-off between data fitting versus smoothing

Keywords

amplitude modulation; demodulation; frequency modulation; interpolation; optimisation; signal resolution; smoothing methods; splines (mathematics); Teager-Kaiser energy operator; continuous-time energy separation algorithm; data fitting; discrete-time AM-FM signals; energy demodulation algorithm; noise performance; optimal trade-off; signal interpolation; smooth splines; smoothing; time resolution; Amplitude modulation; Demodulation; Energy resolution; Frequency estimation; Frequency modulation; Power engineering and energy; Signal processing; Signal resolution; Speech processing; Spline;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2001. Proceedings. (ICASSP '01). 2001 IEEE International Conference on

Conference_Location

Salt Lake City, UT

ISSN

1520-6149

Print_ISBN

0-7803-7041-4

Type

conf

DOI

10.1109/ICASSP.2001.940591

Filename

940591