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A new systolic array algorithm for inverse discrete cosine transform with high throughput rate

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1 Author(s)
Chiper, D.F. ; Dept. of Appl. Electron., Iasi Univ., Romania

In this paper a new approach for the realization of the inverse 1D discrete cosine transform (IDCT) is presented. This approach is based on a new formulation of an odd prime-length IDCT which uses two half-length cyclic convolutions with the same form which can be concurrently computed. Using this approach, a new efficient systolic array with a higher throughput rate, a reduced average computation time, and a very regular structure can be obtained as compared with other systolic arrays for IDCT based on using cyclic convolution forms. A simpler control structure and hardware structure of the PE's, and hence a reduced cycle time, can be obtained. It owns all the outstanding features of the other systolic arrays implementations based on using cyclic convolution forms, being very well suited for a VLSI realization

Published in:

Industrial Electronics, 1996. ISIE '96., Proceedings of the IEEE International Symposium on  (Volume:1 )

Date of Conference:

17-20 Jun 1996

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