Adaptive time delay estimation with allpass constraints

Author

Sun, X. ; Douglas, S.C.

Author_Institution

Dept. of Electr. Eng., Southern Methodist Univ., Dallas, TX, USA

Volume

2

fYear

1999

fDate

24-27 Oct. 1999

Firstpage

898

Abstract

A new gradient adaptive time delay estimation (TDE) algorithm is proposed. The algorithm implicitly maintains allpass constraints on the coefficients of the TDE filter without any additional procedures and employs a simple interpolation formula to calculate the fractional delay estimate. Approximate mean- and mean-square analyses of the behaviors of the TDE filter coefficients and the delay estimate are provided. Analyses and simulations verify that the new method outperforms other gradient adaptive TDE approaches in low signal-to-noise ratio environments.

Keywords

adaptive estimation; adaptive filters; adaptive signal processing; all-pass filters; delay estimation; filtering theory; gradient methods; interpolation; mean square error methods; SNR; TDE filter coefficients; adaptive algorithm; allpass constraints; approximate mean-square analysis; fractional delay estimate; gradient adaptive time delay estimation; interpolation formula; low signal-to-noise ratio environments; mean-square analysis; simulations; Adaptive filters; Analytical models; Delay effects; Delay estimation; Frequency domain analysis; Frequency estimation; Least squares approximation; Signal to noise ratio; Sun; Table lookup;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems, and Computers, 1999. Conference Record of the Thirty-Third Asilomar Conference on

Conference_Location

Pacific Grove, CA, USA

ISSN

1058-6393

Print_ISBN

0-7803-5700-0

Type

conf

DOI

10.1109/ACSSC.1999.831839

Filename

831839