Title :
Digital all-pass filter phase compensation with an enhanced eigenfilter algorithm
Author :
Tapia, Javier J. ; Atkin, Guillermo E. ; LoCicero, Joseph L.
Author_Institution :
Cellular Infrastructure Group, Motorola Inc., Arlington Heights, IL, USA
Abstract :
An enhanced eigenfilter algorithm is introduced to design a digital all-pass filter that approximates a desired phase response in the least-square (LS) sense. A method to match a desired delay function is also presented. These iterative techniques use the Rayleigh principle to solve the LS phase error problem. Performance improvement over other design techniques is evident for low and medium order filters when a mean-squared error metric is computed
Keywords :
all-pass filters; compensation; delays; digital filters; eigenvalues and eigenfunctions; iterative methods; least squares approximations; Rayleigh principle; delay function; digital all-pass filter; eigenfilter algorithm; iterative techniques; least-square sense; low order filters; mean-squared error metric; medium order filters; phase compensation; phase response; Algorithm design and analysis; Delay; Digital filters; Finite impulse response filter; Frequency; IIR filters; Iterative algorithms; Phase distortion; Signal processing algorithms; Symmetric matrices;
Conference_Titel :
Circuits and Systems, 1999. 42nd Midwest Symposium on
Conference_Location :
Las Cruces, NM
Print_ISBN :
0-7803-5491-5
DOI :
10.1109/MWSCAS.1999.867318
