Title :
Design of IIR filters in the complex domain
Author :
Chen, Xiangkun ; Parks, Thomas W.
Author_Institution :
Dept. of Eng., Denver Univ., CO, USA
Abstract :
The IIR (infinite-impulse response) filter design problem in the complex domain is formulated such that the existence of a best approximation is guaranteed. A modified Ellacott-Williams algorithm (1976) is proposed to solve the design problem. The proposed algorithm uses a complex linear approximation utilized for FIR (finite-impulse response) filter design and it usually converges in several iterations. Design examples are included
Keywords :
convergence of numerical methods; digital filters; filtering and prediction theory; iterative methods; linear programming; IIR filters; complex domain; complex linear approximation; digital filters; filter design; iterations; modified Ellacott-Williams algorithm; Algorithm design and analysis; Approximation algorithms; Chebyshev approximation; Convergence; Delay; Finite impulse response filter; IIR filters; Linear approximation; Linear programming; Polynomials;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Conference_Location :
New York, NY
DOI :
10.1109/ICASSP.1988.196872
