Table of Contents
ISRN Electronics
Volume 2012, Article ID 537469, 4 pages
http://dx.doi.org/10.5402/2012/537469
Research Article

Regressive Structures for Computation of DST-II and Its Inverse

1Department of Electronics and Communication, Delhi Technological University, Shahbad Doulatpur, Main Bawana Road, Delhi-110042, India
2Department of Electronics and Communication, 245 Budhpur, GT Karnal Road, Industrial Area, National Highway 1, Delhi 110036, India

Received 31 August 2012; Accepted 14 October 2012

Academic Editors: P. Corsonello and J. Solsona

Copyright © 2012 Priyanka Jain and Anamika Jain. 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

Efficient regressive structures for implementation of forward (DST-II) and inverse discrete sine transform (IDST-II) are developed. The proposed algorithm not only minimizes the arithmetic complexity compared to the existing algorithms (Wany (1990), Hupta and Rao (1990), Yip and Rao (1987), Murthy and Swamy (1992)) but also provides hardware savings over the algorithm (Jain et al. (2008)) by the same authors. The naturally ordered input sequence makes the new algorithms suitable for on-line computation.