AN EFFICIENT VARIABLE STEP-SIZE PROPORTIONATE AFFINE PROJECTION ALGORITHM
Presented by: Constantin Paleologu, Author(s): Constantin Paleologu, University Politehnica of Bucharest, Romania; Jacob Benesty, University of Quebec, Canada; Felix Albu, Silviu Ciochina, University Politehnica of Bucharest, Romania
Proportionate-type affine projection algorithms (PAPAs) are very attractive choices for echo cancellation. These algorithms combine the good features (convergence and tracking) of the affine projection algorithm (APA) and the proportionate idea, which exploits the sparseness character of the echo path in order to further increase their convergence rate. In this paper, we develop a variable step-size (VSS) version of a recently proposed PAPA. The new algorithm achieves a good compromise between fast convergence rate and low misadjustment, but also have a low computational complexity as compared to its classical counterparts.