Lower part OR based Approximate Multiplier for Error Resilient Applications

Abstract

Inexact computation is used extensively in image processing applications especially in compact devices where battery (power consumption) and size (area) must be used efficiently. Inexact computation uses accuracy as a design specification to enhance our need for speed and performance with limited resources and time. This paper introduces a novel multiplier that aims to fulfill this need of high performance with minimal hardware. An error correcting module is introduced to improve the accuracy of the proposed multiplier. Experimental results are carried out resulting in an improvement of 30% power consumption with a reduction of 36% area when compared against existing multipliers with acceptable accuracy. A huge improvement in delay can also be observed as a direct consequence of the multiplier design structure.