Authors: | Shmerko, Vlad Popel, Denis Stanković, Radomir Cheushev, Vasily Yanushkevich, Svetlana |
Title: | Information theoretical approach to minimization of AND/EXOR expressions of switching functions | Journal: | 4th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, ITELSIKS 1999 - Proceedings | Volume: | 2 | First page: | 444 | Last page: | 451 | Conference: | 4th International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Services, ITELSIKS 1999; Nis; Serbia; 13 October 1999 through 15 October 1999 | Issue Date: | 1-Jan-1999 | ISBN: | 978-0-780-35768-X | DOI: | 10.1109/TELSKS.1999.806249 | Abstract: | In modern circuit design, the Shannon decomposition of switching functions is widely used. On the other hand, in information theory of telecommunication, the Shannon entropy used as a measure to represent the information in numerical values, is a key notion. In this paper, we relate these two concepts, belonging to different areas, into an approach to the minimisation of exclusive-or sum-of-products (AND/EXOR) expressions for switching functions. The Shannon decomposition, and the closely related Davio decomposition for AND/EXOR expressions are interpreted in terms of basic concepts in the information theory. Thanks to that, we have proposed an entropy based strategy for minimization of AND/EXOR expressions. We have provided a comparison and an experimental verification of this strategy with some known heuristic minimization strategies using benchmarks. In some cases, our program Info-EXOR produces extremely better results. Moreover, the information theory interpretation of classical decomposition of switching functions offers a new point of view to the existing design styles. |
Keywords: | AND/EXOR expressions | Entropy | Functional decomposition | Minimization | Switching functions | Publisher: | IEEE |
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