DocumentCode :
2918099
Title :
A variable step-size proportionate affine projection algorithm for network echo cancellation
Author :
Liu, Ligang ; Fukumoto, Masahiro ; Zhang, Shiyong
Author_Institution :
Sch. of Comput. Sci., Fudan Univ., Shanghai, China
fYear :
2009
fDate :
5-7 July 2009
Firstpage :
1
Lastpage :
6
Abstract :
For a network canceler, whose input is mainly speech, the proportionate affine projection algorithm (PAPA) is expected to present faster convergence speed than the existing proportionate NLMS algorithms. However, the performance criteria of fast convergence speed conflicts with low steady-state misalignment when a constant step-size parameter is applied. In this article we introduce a variable step-size technique into the PAPA in order to achieve both fast convergence speed and low steady-state misalignment. Simulation results show that the proposed approach can greatly improve the steady-state misalignment without sacrificing the fast convergence speed of the PAPA.
Keywords :
adaptive filters; echo suppression; transient response; adaptive filters; network canceler; network echo cancellation; proportionate affine projection algorithm; sparse impulse response; Adaptive algorithm; Adaptive filters; Algorithm design and analysis; Computational complexity; Computer science; Convergence; Echo cancellers; Projection algorithms; Speech; Steady-state; Adaptive filter; affine projection algorithm; network echo cancellation; proportionate adaptive algorithm; sparse impulse response; variable step-size;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Digital Signal Processing, 2009 16th International Conference on
Conference_Location :
Santorini-Hellas
Print_ISBN :
978-1-4244-3297-4
Electronic_ISBN :
978-1-4244-3298-1
Type :
conf
DOI :
10.1109/ICDSP.2009.5201160
Filename :
5201160
Link To Document :
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