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IEICE TRANSACTIONS on Fundamentals

Gaussian Mixture Bandpass Filter Design for Narrow Passband Width by Using a FIR Recursive Filter

Yukihiko YAMASHITA

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Summary :

Bandpass filters (BPFs) are very important to extract target signals and eliminate noise from the received signals. A BPF of which frequency characteristics is a sum of Gaussian functions is called the Gaussian mixture BPF (GMBPF). In this research, we propose to implement the GMBPF approximately by the sum of several frequency components of the sliding Fourier transform (SFT) or the attenuated SFT (ASFT). Because a component of the SFT/ASFT can be approximately realized using the finite impulse response (FIR) recursive filters, its calculation complexity does not depend on the length of the impulse response. The property makes GMBPF ideal for narrow bandpass filtering applications. We conducted experiments to demonstrate the advantages of the proposed GMBPF over FIR filters designed by a MATLAB function with regard to the computational complexity.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E106-A No.10 pp.1277-1285
Publication Date
2023/10/01
Publicized
2023/04/11
Online ISSN
1745-1337
DOI
10.1587/transfun.2022EAP1108
Type of Manuscript
PAPER
Category
Digital Signal Processing

Authors

Yukihiko YAMASHITA
  Center for Innovative Teaching and Learning of the Tokyo Institute of Technology

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