Title :
FIR-IFIR Hybrid Echo Canceller Degradation Analysis
Author_Institution :
Dept. of Electr. Eng., Uni. Assis Gurgacz, Cascavel
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;
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
DOI :
10.1109/ICCS.2006.301453
