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A novel multi-dimensional zero-phase IIR notch filter with independently-tunable multiple notches

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Abstract

We propose a novel multi-dimensional zero-phase infinite impulse response (IIR) notch filter having multiple independently-tunable notches. The proposed notch filter employs a cascade structure with M N-dimensional (N-D) zero-phase IIR filters to realize an N-D notch filter with M notches. In the proposed filter, the frequency and the bandwidth of each notch can be independently tuned. Furthermore, the proposed filter can have odd number of notches, which may be required for complex-valued signals. Experimental results confirm that the proposed filter significantly attenuates multiple narrowband interference and provides significant improvement in the signal-to-interference ratio compared to a previously proposed three-dimensional IIR filter.

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Authors and Affiliations

  1. Department of Electronic and Telecommunication Engineering, University of Moratuwa, Moratuwa, Sri Lanka

    Chamira U. S. Edussooriya & Tharindu Chandima

  2. Department of Electrical and Computer Engineering, Florida International University, Miami, FL, USA

    Chamira U. S. Edussooriya

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  1. Chamira U. S. Edussooriya
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  2. Tharindu Chandima
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Correspondence to Chamira U. S. Edussooriya.

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Edussooriya, C.U.S., Chandima, T. A novel multi-dimensional zero-phase IIR notch filter with independently-tunable multiple notches. Multidim Syst Sign Process 33, 1073–1086 (2022). https://doi.org/10.1007/s11045-022-00844-w

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