Title :
Energy-efficient digital design through inexact and approximate arithmetic circuits
Author :
Camus, Vincent ; Schlachter, Jeremy ; Enz, Christian
Author_Institution :
Integrated Circuits Lab. (ICLAB), Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland
Abstract :
Inexact and approximate circuit design is a promising approach to improve performance and energy efficiency in technology-scaled and low-power digital systems. Such strategy is suitable for error tolerant applications involving perceptive or statistical outputs. This paper reviews two established techniques applicable to arithmetic units: circuit pruning and carry speculation. A critical comparative study is carried out considering several error metrics.
Keywords :
digital circuits; integrated circuit design; arithmetic circuits; arithmetic units; carry speculation; circuit design; circuit pruning; digital systems; energy-efficient digital design; error tolerant applications; Accuracy; Adders; Delays; Error analysis; Hardware; Logic gates;
Conference_Titel :
New Circuits and Systems Conference (NEWCAS), 2015 IEEE 13th International
Conference_Location :
Grenoble
DOI :
10.1109/NEWCAS.2015.7182028
