DESIGN AND IMPLEMENTATION OF A NOVEL ENERGY-EFFICIENT MULTIPLIER CIRCUIT USING APPROXIMATE COMPUTING TECHNIQUE

Abstract

A promising paradigm for many imprecision-tolerant applications has recently been identified as approximate arithmetic. By reducing accuracy standards, it can significantly reduce circuit complexity, latency, and energy consumption. In this research, we present a unique significance-driven logic compression (SDLC) approach for an energy-efficient approximate multiplier design. An algorithmic and adjustable lossy compression of the partial product rows based on their progressive bit importance is the core of this approach. To lessen the number of product rows, the resulting product terms are then commutatively remapped. As a result, the multiplier's complexity in terms of the number of logic cells and the lengths of critical routes is significantly decreased.