Title :
A fast algorithm for calculating the dual Gabor window with integer oversampling
Author :
Subbanna, Nagesh K. ; Eldar, Yonina C.
Author_Institution :
Dept. of Electr. Eng., Technion-Israel Inst. of Technol., Haifa, Israel
Abstract :
We consider Gabor expansion of signals that are oversampled in the time-frequency domain by an integer factor. We demonstrate that using a combination of nonminimum norm dual windows and discrete Fourier transforms (DFT), we can obtain the Gabor expansion very efficiently. The conventional method used to solve this problem is compared with our method and the advantages of our method are explicitly shown.
Keywords :
discrete Fourier transforms; signal sampling; time-frequency analysis; DFT; Gabor expansion; discrete Fourier transforms; dual Gabor window; integer oversampling; nonminimum norm dual windows; oversampled signals; time-frequency domain; Application software; Computational complexity; Computer vision; Discrete Fourier transforms; Energy resolution; Pattern classification; Signal resolution; Time frequency analysis;
Conference_Titel :
Electrical and Electronics Engineers in Israel, 2004. Proceedings. 2004 23rd IEEE Convention of
Print_ISBN :
0-7803-8427-X
DOI :
10.1109/EEEI.2004.1361168
