Title :
Optimized parametric bispectrum estimation
Author :
An, C.K. ; Kim, S.B. ; Powers, Edward J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
When analyzing various signals produced by some nonlinear process, higher-order spectra are necessary to characterize the nonlinearity. For example, the bispectrum is very useful in analyzing three-wave nonlinear interaction data. An optimized parametric bispectrum estimation method is presented. It is shown to be particularly advantageous when estimating from either short duration records, or under poor signal-to-noise ratio conditions. The performance is compared to a nonoptimized parametric algorithm as well as the FFT (fast Fourier transform) approach
Keywords :
parameter estimation; spectral analysis; higher-order spectra; nonlinearity; optimised method; parametric bispectrum estimation; signal analysis; spectral analysis; Equations; Frequency estimation; Optimization methods; Performance analysis; Power engineering and energy; Signal analysis; Signal processing; Signal resolution; Signal to noise ratio; Spectral analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.197122
