Title :
Reducing CIC filter complexity
Author :
Losada, Ricardo A. ; Lyons, Richard
Author_Institution :
MathWorks Inc., Natick, MA, USA
fDate :
7/1/2006 12:00:00 AM
Abstract :
This paper provides several tricks to reduce the complexity and enhance the usefulness of cascaded integrator-comb (CIC) filters. The first trick shows a way to reduce the number of adders and delay elements in a multi-stage CIC interpolation filter. The result is a multiplierless scheme that performs high-order linear interpolation using CIC filters. The second trick shows a way to eliminate the integrators from CIC decimation filters. The benefit is the elimination of unpleasant data word growth problems.
Keywords :
cascade networks; comb filters; computational complexity; interpolation; CIC filter complexity; cascaded integrator-comb filters; decimation filters; interpolation filter; multiplierless scheme; Added delay; Costs; Digital signal processing; Hardware; Interpolation; Nonlinear filters;
Journal_Title :
Signal Processing Magazine, IEEE
DOI :
10.1109/MSP.2006.1657825
