Power estimation method for highly correlated input sequences under realistic delay model

Abstract

A new power estimation method is presented which considers spatio-temporal correlations among the primary inputs as well as the glitch effect under a realistic delay model. To deal with the glitch effect, the symbolic simulation technique is employed, and to take the correlations among the primary inputs into account, the authors employ a new technique which transforms correlation information into a logic structure, called 'pre-logic.' Experimental results show that the estimation error of the proposed method is similar to 4% under a realistic delay model with highly correlated input streams.