Technical Program

Paper Detail

Paper:SPTM-P3.10
Session:Time-Frequency Distributions
Time:Wednesday, May 19, 09:30 - 11:30
Presentation: Poster
Topic: Signal Processing Theory and Methods: Non-stationary Signals & Time-Frequency Analysis
Title: ON THE GRUNBAUM COMMUTOR BASED DISCRETE FRACTIONAL FOURIER TRANSFORM
Authors: Balu Santhanam; University of New Mexico 
 Juan Vargas-Rubio; University of New Mexico 
Abstract: The basis functions of the continuous fractional Fourier transform (FRFT) are linear chirp signals that are suitable for time-frequency analysis of signals with a chirping time-frequency content. Efforts to develop a discrete computable version of the fractional Fourier transform (DFRFT) have focussed on furnishing a orthogonal set of eigenvectors for the DFT that serve as discrete versions of the Gauss--Hermite functions. Analysis of the DFRFT obtained from Grunbaum's tridiagonal commutor and the kernel associated with it reveals the presence of both amplitude and frequency modulation in contrast to just frequency modulation seen in the continuous case. Furthermore the instantaneous frequency of the basis functions of the DFRFT are sigmoidal rather than linear.
 
           Back


Home -||- Organizing Committee -||- Technical Committee -||- Technical Program -||- Plenaries
Paper Submission -||- Special Sessions -||- ITT -||- Paper Review -||- Exhibits -||- Tutorials
Information -||- Registration -||- Travel Insurance -||- Housing -||- Workshops

©2015 Conference Management Services, Inc. -||- email: webmaster@icassp2004.org -||- Last updated Wednesday, April 07, 2004