IEEE SIGNAL PROCESSING LETTERS, vol.24, no.4, pp.427-431, 2017 (SCI-Expanded)
Article / Article
IEEE SIGNAL PROCESSING LETTERS
Science Citation Index Expanded (SCI-EXPANDED), Scopus
Coarse-to-fine search, compact fractional Fourier domains, fractional Fourier transform, minimum l1 norm, TRANSFORM
Yıldız Technical University Affiliated:
In this letter, a method for finding the compact fractional Fourier domains is presented. As a measure of compactness, we take the l(1)-norm. It is proposed that there exists at least one fractional Fourier domain in which l(1)-norm of the transformed signal is minimum. A coarse-to-fine grid search strategy is adopted to find the optimum fractional Fourier transform angle thatmakes l(1)-norm minimum with low computational cost. Extensive simulation results validate the proposed method.