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A new gradient-based algorithm using variable step-size technique and its application [adaptive IIR notch filter]
Author(s)
Benjangkaprasert, C.
Jorphochaudom, S.
Phuvasitkul, S.
Anantrasirichai, N.
Date Issued
January 1, 2002
Type
Conference Paper
Abstract
In this paper, a new class of gradient-based algorithm by using variable step-size technique for a second-order adaptive IIR notch filter is presented. An adaptation step-size parameter for the algorithm is worked out from the output signal and the gradient signal. The adaptive algorithm is used for detection of a sinusoid with additive white Gaussian noise, impulse noise and cancellation of 50-Hz interference in the recording of electrocardiogram signals. The performance of this algorithm is proved here to give high convergence speed, high impulse noise robustness and good efficiency of 50-Hz interference cancellation. Finally, the results of computer simulation are given to demonstrate the performance of the proposed algorithm for the adaptive IIR notch filter.
Citation
IEEE Asia Pacific Conference on Circuits and Systems Proceedings Apccas, 1, 309-312, 2002