A DISCRETE FRACTIONAL EVOLUTIONARY TRANSFORM

Onen E., Akan A., Chaparro L. F.

18th European Signal Processing Conference (EUSIPCO), Aalborg, Danimarka, 23 - 27 Ağustos 2010, ss.1752-1755 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Aalborg
  • Basıldığı Ülke: Danimarka
  • Sayfa Sayıları: ss.1752-1755
  • İstanbul Üniversitesi Adresli: Evet

Özet

In this paper, we present a discrete fractional evolutionary transform (DFrET) for the time-frequency (TF) representation of non-stationary, wide band signals. The time-varying kernel of this transform is used to calculate the evolutionary spectrum. The DFrET kernel are obtained from the coefficients of a discrete fractional Gabor expansion. The proposed DFrET provides a tool for high-resolution representation of multicomponent signals with linear instantaneous frequencies. Performance of the proposed algorithm is illustrated by means of simulations and compared with existing TF methods.