Title :
Absolute Gradient Algorithm for Adaptive IIR Notch Filter
Author :
Nosan, A. ; Punchalard, R.
Author_Institution :
Comput. Eng. Grad. Program, Mahanakorn Univ. of Technol., Bangkok, Thailand
Abstract :
The gradient algorithm used absolute value of error signal as a criterion to adjust the filter coefficient of adaptive IIR notch filter is presented in this paper. The objective is to estimate or track the frequency of a single sinusoidal signal corrupted by additive white Gaussian noise. The proposed algorithm can solve the problem of selecting an initial condition as met in the previous method. Moreover, it also has a high convergence speed.
Keywords :
AWGN; IIR filters; adaptive filters; gradient methods; notch filters; absolute gradient algorithm; adaptive IIR notch filter; additive white Gaussian noise; error signal absolute value; filter coefficient; sinusoidal signal; Adaptive filters; Convergence; Filtering algorithms; Frequency estimation; IIR filters; Mathematical model; Signal processing algorithms;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2012 9th International Conference on
Conference_Location :
Phetchaburi
Print_ISBN :
978-1-4673-2026-9
DOI :
10.1109/ECTICon.2012.6254119
