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

Volume

1

fYear

1999

fDate

1999

Firstpage

516

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. 42nd Midwest Symposium on

Conference_Location

Las Cruces, NM

Print_ISBN

0-7803-5491-5

Type

conf

DOI

10.1109/MWSCAS.1999.867318

Filename

867318