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A systolic array architecture for the discrete sine transform

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4 Author(s)
D. F. Chiper ; Dept. of Appl. Electron., Tech. Univ. "Gh. Asachi", Iasi, Romania ; M. N. S. Swamy ; M. O. Ahmad ; T. Stouraitis

An efficient approach to design very large scale integration (VLSI) architectures and a scheme for the implementation of the discrete sine transform (DST), based on an appropriate decomposition method that uses circular correlations, is presented. The proposed design uses an efficient restructuring of the computation of the DST into two circular correlations, having similar structures and only one half of the length of the original transform; these can be concurrently computed and mapped onto the same systolic array. Significant improvement in the computational speed can be obtained at a reduced input-output (I/O) cost and low hardware complexity, retaining all the other benefits of the VLSI implementations of the discrete transforms, which use circular correlation or cyclic convolution structures. These features are demonstrated by comparing the proposed design with some of the previously reported schemes.

Published in:

IEEE Transactions on Signal Processing  (Volume:50 ,  Issue: 9 )