REDUCTION OF DELAY AND POWER IN FIR FILTERS USING EXACT COMMON SUB-EXPRESSION AND GB BASEDMETHOD USING CSA

Arjun M, Mohan H M

Abstract: Finite impulse response (fir) filters wereconstructed by using multiplication, coefficients and adders. Fir filters are mainly utilized in digital signal processing because of its feed forward features. To decreasedifficulty in circuit, multiple constant multiplier method is preferred much, further to lessen delay, power intake and area in fir filters we use exact common sub-expression method and GB method in this paper along with these approaches, altered carry select adder is also used here which diminishes 50% delay and 15-25% enhancement in power effectivenessrelated to conventional one.

Keywords: CSA; FIR Filters; MCM; GBMethod; CSE etc…

DOI: https://doi.org/10.15623/ijret.2016.0516092