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A powerful notch filter for PLI cancelation

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posted on 09.12.2021, 05:37 by Ali MobaienAli Mobaien, Arman Kheirati RooniziArman Kheirati Roonizi, Reza Boostani
Abstract—In this work, we present a powerful notch filter for power-line interference (PLI) cancelation from biomedical signals. This filter has a unit gain and a zero-phase response. Moreover, the filter can be implemented adaptively to adjust its bandwidth based on the signal-to-noise ratio. To realize this filter, a dynamic model is defined for PLI based on its sinusoid property. Then, a constrained least square error estimation is used to emerge the PLI based on the observations while the constraint is the PLI dynamic. At last, the estimated PLI is subtracted from recordings. The proposed filter is assessed using synthetic data and real biomedical recordings in different noise levels. The results demonstrate this filter as a very powerful and effective means for canceling the PLI out.

History

Email Address of Submitting Author

a.mobaien@shirazu.ac.ir

ORCID of Submitting Author

0000-0003-1874-4289

Submitting Author's Institution

Shiraz University

Submitting Author's Country

Iran