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Journal of Engineering
Volume 2013 (2013), Article ID 214650, 13 pages
http://dx.doi.org/10.1155/2013/214650
Review Article

DFRFT: A Classified Review of Recent Methods with Its Application

Department of Electronics and Communication Engineering, Jaypee University of Engineering and Technology, Guna, Raghogarh, Madahya Pradesh 473226, India

Received 6 December 2012; Accepted 16 March 2013

Academic Editor: Wei-Qiang Zhang

Copyright © 2013 Ashutosh Kumar Singh and Rajiv Saxena. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the literature, there are various algorithms available for computing the discrete fractional Fourier transform (DFRFT). In this paper, all the existing methods are reviewed, classified into four categories, and subsequently compared to find out the best alternative from the view point of minimal computational error, computational complexity, transform features, and additional features like security. Subsequently, the correlation theorem of FRFT has been utilized to remove significantly the Doppler shift caused due to motion of receiver in the DSB-SC AM signal. Finally, the role of DFRFT has been investigated in the area of steganography.