A Study of Approximate Arithmetic Circuit Designs for Digital Signal Processing Systems

Approximate computing has gained significant attention as a promising strategy for digital signal and image processing applications. This article reviews the relevant research aimed at development of approximate arithmetic circuits and provides an overview of their performance in digital signal processing systems. The incessantly growing demand for compactness and speed in portable multimedia devices and embedded systems, continues to drive the need for novel approximation techniques. This review research paper is aimed at serving as a guideline for further research on inexact computing.