Article,

DESIGN OF RADIX-8 BOOTH MULTIPLIER USING KOGGESTONE ADDER FOR HIGH SPEED ARITHMETIC APPLICATIONS

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Emerging Trends in Electrical, Electronics & Instrumentation Engineering: An international Journal (EEIEJ), 1 (1): 1-11 (2014/02 2014)

Abstract

This paper presents the design and implementation of radix-8 booth Multiplier .The number of partial products are reduced to n/2 in radix-4We can reduce the number of partial products even further to n/3 by using a higher radix-8 in the multiplier encoding, thereby obtaining a simpler CSA tree .This implies less delay and a smaller area size .Since this multiplication operation is for both signed and unsigned numbers,cost of the system can also be reduced. The carry save adder (CSA) tree and the final adder can speed up the operation of multiplier. Koggestone adder is a parallel prefix form carry look ahead adder .We determine that by replacing carry save adder(CSA) and final two operand parallel prefix adder with parallel prefix adders of koggestone algorithm reduces delay furthur more resulting in substantial increase in speed of circuits

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