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EXOR transform of inputs to design efficient two-level AND/EXOR adders

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2 Author(s)
Drechsler, R. ; Inst. of Comput. Sci., Albert-Ludwigs-Univ., Freiburg, Germany ; Becker, B.

An input transformation based on EXOR gates is presented which enables efficient two-level AND/EXOR representations of adders to be constructed. In general, adders only have exponential two-level representations, but by using the input transformation the complexity decreases to O(n2) requiring only a linear hardware overhead. Exclusive sum-of-products (ESOP) and positive polarity Reed-Muller expression (PPRM) circuits are considered

Published in:

Electronics Letters  (Volume:36 ,  Issue: 3 )