Instantaneous frequency estimation of polynomial phase signals

Author

Çakrak, Ferhat ; Loughlin, Patrick J.

Author_Institution

Dept. of Electr. Eng., Pittsburgh Univ., PA, USA

fYear

1998

Firstpage

549

Lastpage

552

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/TFSA.1998.721483

Filename

721483