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Title: A Piloted Notch Time-Frequency Information Based Variable Step-Size Algorithm
Authors: Chobey, Dinesh Kumar
Lim, Yong Ching
Keywords: adaptive filters
notch filters
Signal processing algorithms
Signal to noise ratio
mean square error methods
time-frequency analysis
Issue Date: 2015
Source: Chobey, D. K., & Lim, Y. C. (2015). A piloted notch time-frequency information based variable step-size algorithm. 2015 IEEE International Symposium on Circuits and Systems (ISCAS), 2201-2204.
Conference: 2015 IEEE International Symposium on Circuits and Systems (ISCAS)
Abstract: In this paper, we have proposed a new steering direction determination mechanism and step-size update algorithm for piloted adaptive notch filter architecture. A timedomain averaging based gradient analysis of the piloted notch cost function has been utilized to determine the direction of the main notch with respect to the input sinusoid frequency. The steering direction will indicate the distance between the frequency of the input sinusoid and the zero of the main notch. This frequency domain information has been interleaved with time domain information to develop a novel algorithm for determination of variable step-sizes for improved speed of convergence with comparatively huge reduction in steady-state mean square error (MSE). The simulation results verifies the excellent performance exhibited by our proposed steering mechanism and the step-size update algorithm over original piloted adaptive notch filter with respect to the speed of convergence and MSE.
DOI: 10.1109/ISCAS.2015.7169118
Schools: School of Electrical and Electronic Engineering 
Rights: © 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. The published version is available at: [].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Conference Papers

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