A joint-optimization NSAF algorithm based on the first-order Markov model. Issue 3 (March 2017)

• Record Type: Journal Article
• Authors: Yu, Yi; Zhao, Haiquan
• Is Part Of: Signal, image and video processing. Volume 11:Issue 3(2017)
• Page Start: 509
• Page End: 516
• Publication Date: 2017-03
• Subjects: Normalized subband adaptive filter -- Variable step size -- Variable regularization parameter -- Echo cancelation; Signal processing -- Digital techniques -- Periodicals; Image processing -- Digital techniques -- Periodicals; Digital video -- Periodicals; 621.3822
• DOI: 10.1007/s11760-016-0988-0
• Languages: English
• ISSNs: 1863-1703

Abstract

Abstract Recently, the normalized subband adaptive filter (NSAF) algorithm has attracted much attention for handling colored input signals. Based on the first-order Markov model of the optimal weight vector, this paper provides some insights for the convergence of the standard NSAF. Following these insights, both the step size and the regularization parameter in the NSAF are jointly optimized by minimizing the mean-square deviation. The resulting joint-optimization step size and regularization parameter algorithm achieves a good tradeoff between fast convergence rate and low steady-state error. Simulation results in the context of acoustic echo cancelation demonstrate good features of the proposed algorithm.