Polynomial time-frequency distributions and timevarying higher-order spectra: A review of performance for non-stationary signal analysis

Abstract

A class of Polynomial time-frequency distributions has been recently proposed. It achieves the highest possible concentration in the time-frequency plane for nonlinear polynomial FM signals. Further, it allows to define time-varying higher-order spectra for nonstationary random signals. The paper presents a review of recent results and an application to multi-component signal analysis in the presence of additive and/or multiplicative noise.