Kobenhavs University

Belgium

Kobenhavs University

Belgium
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De Vos A.,Ghent University | Burignat S.,Ghent University | Gluck R.,Kobenhavs University | Mogensen T.A.,Kobenhavs University | And 5 more authors.
ACM Journal on Emerging Technologies in Computing Systems | Year: 2014

Discrete linear transformations are important tools in information processing. Many such transforms are injective and therefore prime candidates for a physically reversible implementation into hardware. We present here reversible integer cosine transformations on n input integers. The resulting reversible circuit is able to perform both the forward transform and the inverse transform. The detailed structure of such a reversible design strongly depends on the odd prime factors of the determinant of the transform: whether those are of the form 2k ± 1 or of the form 2k ± 2l ± 1 or neither of these forms. © 2014 ACM.

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