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Instantaneous frequency estimation by using Wigner distribution and Viterbi algorithm

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4 Author(s)
Stankovic, L. ; Univ. of Montenegro, Podgorica, Yugoslavia ; Djurovic, I. ; Ohsumi, A. ; Ijima, Hiroshi

Estimation of the instantaneous frequency (IF) in a high noise environment, by using the Wigner distribution (WD) and the Viterbi algorithm, is considered. The proposed algorithm combines nonparametric IF estimation based on the WD maxima with minimization of the IF variations between consecutive points. Algorithm realization is performed recursively using the (modified) Viterbi algorithm. Performances are compared with IF estimation based on the WD maxima.

Published in:

Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03). 2003 IEEE International Conference on  (Volume:6 )

Date of Conference:

6-10 April 2003