A robust variable step-size affine projection algorithm

• Published in: Signal processing Vol. 90; no. 9; pp. 2806 - 2810
• Main Authors: Rey Vega, Leonardo, Rey, Hernan, Benesty, Jacob
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.2010; Elsevier
• Subjects: Acoustic echo cancellation; Acoustics; Adaptive filters; Affine projection algorithm; Algorithms; Applied sciences; Cancellation; Detection, estimation, filtering, equalization, prediction; Exact sciences and technology; Impulsive noise; Information, signal and communications theory; Mathematical analysis; Miscellaneous; Norms; Projection; Robust filtering; Signal and communications theory; Signal processing; Signal, noise; System identification; Telecommunications and information theory; Vectors (mathematics); Impulsive noise; Robust filtering; Acoustic echo cancellation; System identification; Affine projection algorithm; Noise reduction; Updating; Adaptive filter; Acoustic signal processing; Echo suppression; Affine transformation; Algorithm; Temporal constraint; Variable step method; Robust control; Time dependence; Pulse noise; Acoustic noise; Signal processing
• ISSN: 0165-1684; 1872-7557
• DOI: 10.1016/j.sigpro.2010.03.029

We present a robust variable step-size affine projection algorithm (RVSS-APA) using a recently introduced new framework for designing robust adaptive filters. The algorithm is the result of minimizing the square norm of the a posteriori error vector subject to a time-dependent constraint on the norm of the filter update. The RVSS-APA is then successfully tested in different environments for system identification and acoustic echo cancellation applications.