Title :
Estimation of stable all-pass transfer functions for delay equalization based on least-squares minimization and wavelet transform
Author :
Rosas-Romero, Roberto ; Rodrfguez-Asomoza, J. ; Alarcón-Aquino, Vicente ; Pérez-Loyola, Antonio
Author_Institution :
Dept. of Electr. Eng., Univ. de las Americas-Puebla, Puebla, Mexico
Abstract :
In this paper, we present a generalized optimal stable all-pass digital filter design algorithm that supports (1) arbitrary phase response specifications, (2) a corrective system designed to make the phase delay of a magnitude-filter substantially constant over a desired frequency range, (3) estimation of the delay 3 of the best performed equalizer, (4) stability, and (5) wavelet-based non-uniform sampling of the phase response of the magnitude-filter whose delay is to be equalized.
Keywords :
all-pass filters; digital filters; equalisers; least mean squares methods; least squares approximations; minimisation; transfer functions; wavelet transforms; arbitrary phase response specifications; corrective system; delay equalization; generalized optimal stable all-pass digital filter design; least-squares minimization; magnitude filter; phase delay; stable all-pass transfer function estimation; wavelet transform; wavelet-based nonuniform sampling; Algorithm design and analysis; Delay estimation; Digital filters; Equalizers; Frequency estimation; Phase estimation; Propagation delay; Stability; Transfer functions; Wavelet transforms;
Conference_Titel :
Circuits and Systems, 2005. 48th Midwest Symposium on
Print_ISBN :
0-7803-9197-7
DOI :
10.1109/MWSCAS.2005.1594480
