Instantaneous Frequency Estimation Using Fractional Fourier Transform and Wigner Distribution

2010 ◽  
Author(s):  
Nabeel Ali Khan ◽  
Imtiaz A. Taj ◽  
M. Noman Jaffri
Keyword(s):  
Fourier Transform ◽  
Instantaneous Frequency ◽  
Fractional Fourier Transform ◽  
Wigner Distribution ◽  
Frequency Estimation ◽  
Instantaneous Frequency Estimation

scholarly journals Combination of the viterbi algorithm and cross-wigner distribution for the instantaneous frequency estimation phase signals in high noise environments

2018 ◽  
Vol 69 (3) ◽  
pp. 255-258
Author(s):  
Igor Djurović
Keyword(s):  
Instantaneous Frequency ◽  
Viterbi Algorithm ◽  
Wigner Distribution ◽  
Frequency Estimation ◽  
Penalty Functions ◽  
Accuracy Improvement ◽  
Instantaneous Frequency Estimation ◽  
High Noise ◽  
Fm Signals ◽  
Improved Accuracy

Abstract In this paper, combination of the cross-Wigner distribution (XWD) and the Viterbi algorithm (VA) for the instantaneous frequency (IF) estimation of frequency modulated (FM) signals in high noise environments is proposed. The favourable properties of the VA, the IF reconstruction based on minimization of the path penalty functions, and the XWD, iterative accuracy improvement of the IF estimation, give hybrid IF estimator with improved accuracy for high noise environments

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