Title :
Laguerre filters with adaptive pole optimization
Author :
Belt, H.J.W. ; Brinker, A. G den
Author_Institution :
Dept. of Electr. Eng., Eindhoven Univ. of Technol., Netherlands
Abstract :
An algorithm for an adaptive Laguerre filter is described. The Laguerre weights are updated using standard RLS. As a new feature the Laguerre pole is adapted at each sampling instant for more flexibility. The additional complexity that is required to calculate the gradient w.r.t. the pole is small. A sign algorithm is used in order to have complete control of the step size with which the Laguerre pole is varied. The step size in the sign algorithm is pole dependent and chosen such that the cumulative transient signal caused by the persistent tuning of the Laguerre pole remains small enough. Also, the step size is chosen such that the Laguerre filter always remains stable. A computer experiment shows that the adaptive filter performs well
Keywords :
adaptive filters; circuit tuning; filtering theory; optimisation; poles and zeros; Laguerre filters; Laguerre weights updating; adaptive pole optimization; sign algorithm; step size control; Adaptation model; Adaptive filters; Belts; Filter bank; IIR filters; Least squares approximation; Linear regression; Resonance light scattering; Sampling methods; Size control;
Conference_Titel :
Circuits and Systems, 1996. ISCAS '96., Connecting the World., 1996 IEEE International Symposium on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3073-0
DOI :
10.1109/ISCAS.1996.540346
