Title :
A variable step size evolutionary affine projection algorithm
Author :
Albu, Felix ; Paleologu, Constantin ; Benesty, Jacob
Author_Institution :
Fac. of Electron. & Telecommun., Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
It is well known that the affine projection algorithm (APA) offers a good tradeoff between convergence rate/tracking and computational complexity. Recently, the evolutionary APA (E-APA) with a variable projection order has been proposed. In this paper, we propose a variable step size (VSS) version of the E-APA, called VSS-E-APA. It is shown that the VSS-E-APA is robust to near-end signal variations. Also, it has both a fast convergence speed and a small steady-state error and a much reduced numerical complexity than the VSS-APA.
Keywords :
acoustic signal processing; adaptive filters; affine transforms; computational complexity; convergence; echo suppression; evolutionary computation; VSS version; VSS-E-APA; acoustic echo cancellation; adaptive filters; computational complexity; convergence rate; convergence speed; convergence tracking; evolutionary APA; near-end signal variations; numerical complexity; steady-state error; step size evolutionary affine projection algorithm; variable projection order; variable step size; Adaptive filters; Complexity theory; Convergence; Echo cancellers; Projection algorithms; Speech; adaptive filters; affine projection algorithm; echo cancellation; variable step size;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2011 IEEE International Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4577-0538-0
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2011.5946432
