Title :
A GSC-type structure for FIR-IFIR hybrid echo canceling
Author :
Resende, Leonardo S. ; Rocha, C.
Author_Institution :
Fed. Univ. of Santa Catarina, Brazil
Abstract :
This paper presents a GSC-type structure for the FIR-IFIR hybrid echo canceller and the optimum filters are defined. The measure of echo cancellation performance is presented, which is a function of the input signal correlation, of the sparseness degree and of the interpolator parameters. Furthermore, the LMS algorithm for updating the filter coefficients in adaptive systems is also developed. Simulation results illustrate the effectiveness of the new approach to this FIR-IFIR hybrid filtering problem for both white and colored input noise.
Keywords :
FIR filters; adaptive filters; correlation methods; echo suppression; interpolation; least mean squares methods; sparse matrices; white noise; FIR-IFIR hybrid echo canceller; GSC-type structure; LMS algorithm; adaptive system; colored input noise; input signal correlation function; interpolator parameter; optimum filter; sparseness degree; white input noise; Adaptive filters; Adaptive systems; Echo cancellers; Filtering; Finite impulse response filter; Least squares approximation; Noise cancellation; Signal processing algorithms; Transversal filters; Wiener filter; Adaptive filtering; FIR-IFIR hybrid filtering; LMS algorithm; echo canceling; interpolated FIR filtering;
Conference_Titel :
Image and Signal Processing and Analysis, 2009. ISPA 2009. Proceedings of 6th International Symposium on
Conference_Location :
Salzburg
Print_ISBN :
978-953-184-135-1
DOI :
10.1109/ISPA.2009.5297770
