Open Science Research Excellence
%0 Journal Article
%A Yasunori Sugita and  Toshinori Yoshikawa and  Naoyuki Aikawa
%D 2009 
%J  International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering
%B World Academy of Science, Engineering and Technology
%I International Science Index 35, 2009
%T A Weighted Least Square Algorithm for Low-Delay FIR Filters with Piecewise Variable Stopbands
%U http://waset.org/publications/12287
%V 35
%X Variable digital filters are useful for various signal processing and communication applications where the frequency characteristics, such as fractional delays and cutoff frequencies, can be varied. In this paper, we propose a design method of variable FIR digital filters with an approximate linear phase characteristic in the passband. The proposed variable FIR filters have some large attenuation in stopband and their large attenuation can be varied by spectrum parameters. In the proposed design method, a quasi-equiripple characteristic can be obtained by using an iterative weighted least square method. The usefulness of the proposed design method is verified through some examples.

%P 1946 - 1951