Title :
Design of IIR digital filters in the complex domain by transforming the desired response
Author :
Matsunaga, Tatsuya ; Yoshida, Masahiro ; Ikehara, Masaaki
Author_Institution :
Keio Univ., Yokohama, Japan
Abstract :
In this paper, we present a new design method of IIR digital filters with an equiripple magnitude response in the complex domain. This method is based on solving a least square solution iteratively. At each iteration, the desired response is transformed so as to have equiripple error. Hence the algorithm is very simple and does not need a special software. By this method, an equiripple solution is obtained very quickly with less computational complexity. Finally, we show some examples to validate the proposed method.
Keywords :
IIR filters; computational complexity; digital filters; equiripple filters; frequency response; least squares approximations; IIR digital filters; complex domain; computational complexity; equiripple error; equiripple magnitude response; least square solution; Chebyshev approximation; Design methodology; Digital filters; Finite impulse response filter; Frequency response; IIR filters; Iterative algorithms; Least squares approximation; Least squares methods; Stability;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205811
