Title :
Instantaneous frequency estimation of polynomial phase signals
Author :
Çakrak, Ferhat ; Loughlin, Patrick J.
Author_Institution :
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
Abstract :
We develop a new multi-window time-frequency method for estimating the instantaneous frequency (IF) of constant amplitude polynomial FM signals in the presence of noise. The method is computationally simple, asymptotically unbiased for noise-free signals, and provides a signal to noise ratio (SNR) threshold improvement of about 3 dB over other estimators, including the cross-polynomial Wigner time-frequency method (X-PWVD), for quadratic and cubic FM signals
Keywords :
frequency estimation; frequency modulation; noise; polynomials; signal processing; time-frequency analysis; SNR threshold; asymptotically unbiased method; constant amplitude polynomial FM signals; cross-polynomial Wigner time-frequency method; cubic FM signals; instantaneous frequency estimation; multi-window time-frequency method; noise; noise-free signals; polynomial phase signals; quadratic FM signals; signal to noise ratio; Amplitude estimation; Frequency estimation; Noise level; Phase estimation; Polynomials; Sampling methods; Signal to noise ratio; Spectrogram; Time frequency analysis; Yield estimation;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Pittsburgh, PA
Print_ISBN :
0-7803-5073-1
DOI :
10.1109/TFSA.1998.721483
