FIR-IFIR Hybrid Echo Canceller Degradation Analysis

Author

Maia, Vanio

Author_Institution

Dept. of Electr. Eng., Uni. Assis Gurgacz, Cascavel

fYear

2006

fDate

Oct. 2006

Firstpage

1

Lastpage

5

Abstract

In this paper we present an analysis of the degradation introduced by the interpolated filter into the FIR-IFIR hybrid echo canceller proposed by Abousaada et al. Through a joint approach combining interpolated transversal filtering and linear constrained optimization, the optimum filters for the Abousaada scheme are determined. We also analyze the performance degradation, which is shown to be a function of the input signal correlation, the IFIR filter sparseness, and the interpolator parameters

Keywords

FIR filters; correlation methods; echo suppression; interpolation; transversal filters; FIR-IFIR hybrid echo canceller; degradation analysis; interpolated transversal filtering; inverse finite impulse response filter; linear constrained optimization; optimum filter; signal correlation; Constraint optimization; Degradation; Echo cancellers; Filtering; Finite impulse response filter; Nonlinear filters; Signal analysis; Transversal filters; Vectors; Wiener filter; Echo canceller; interpolated filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Communication systems, 2006. ICCS 2006. 10th IEEE Singapore International Conference on

Conference_Location

Singapore

Print_ISBN

1-4244-0411-8

Electronic_ISBN

1-4244-0411-8

Type

conf

DOI

10.1109/ICCS.2006.301453

Filename

4085748