NDLI: Improved clipped affine projection adaptive algorithm

Content Provider	IET Digital Library
Author	Bekrani, Mehdi Bibak, Ruhollah Lotfizad, Mojtaba
Abstract	In this study, a modification to the affine projection adaptive filtering algorithm is proposed which is based on a three-level clipping of the input signal as applied to the weight update process. This clipping operation causes the input signal to be quantised into three levels, namely, 0, 1, and −1. By doing so, the proposed scheme, in addition to reducing the computational complexity, achieves an error convergence performance that is comparable to, or even at times better than that of the conventional affine projection algorithm (APA) for a certain range of the clipping threshold. The proposed adaptive algorithm is compared with some low complexity variants of APA with respect to the convergence rate and computational complexity, and its superiority to its counterparts of the same order of complexity in terms of the convergence rate is demonstrated. The mean square error analysis based on the energy conservation relation and the stability analysis is also presented for the proposed clipped APA.
Starting Page	103
Ending Page	111
Page Count	9
ISSN	17519675
Volume Number	13
e-ISSN	17519683
Issue Number	Issue 1, Feb (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/13/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2018.5216
Journal	IET Signal Processing
Publisher Date	2018-08-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Filter Affine Projection Adaptive Algorithm Affine Projection Adaptive Filtering Algorithm Clipped APA Clipping Operation Clipping Threshold Computational Complexity Conventional Affine Projection Algorithm Convergence Rate Error Analysis Error Convergence Performance Filtering Method in Signal Processing Filtering Theory Input Signal Interpolation And Function Approximation Low Complexity Variants Mean Square Error Analysis Mean Square Error Method Numerical Analysis Statistics Three-level Clipping Weight Update Process
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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