%0 Journal Article
%T Reducting Power Dissipation in Fir Filter: an Analysis
%A Rakesh Kumar Bansal
%A Manoj Garg
%A Savina Bansal
%J Signal Processing : An International Journal
%D 2010
%I Computer Science Journals
%X In this paper, three existing techniques, Signed Power-of-Two (SPT), Steepest decent and Coefficient segmentation, for power reduction of FIR filters are analyzed. These techniques reduce switching activity which is directly related to the power consumption of a circuit. In an FIR filter, the multiplier consumes maximum power. Therefore, power consumption can be reduced either by by making the filter multiplier-less or by minimizing hamming distance between the coefficients of this multiplier as it directly translates into reduction in power dissipation [8]. The results obtained on four filters (LP) show that hamming distance can be reduced upto 26% and 47% in steepest decent and coefficient segmentation algorithm respectively. Multiplier-less filter can be realized by realizing coefficients in signed power-of-two terms, i.e. by shifting and adding the coefficients, though at the cost of shift operation overhead.
%K FIR
%K Coefficient segmentation
%K Steepest decent
%K SPTl
%K Power reduction
%U http://www.cscjournals.org/csc/manuscriptinfo.php?ManuscriptCode=79.76.69.70.41.50.46.102&JCode=SPIJ&EJCode=76.73.66.67.105&Volume=46.104&Issue=47.100