Adaptive lowpass filters

Kentaro Yamaguchi, Eiji Watanabe, Akinori Nishihara

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

We propose a design of first-order adaptive infinite inpulse response (IIR) lowpass filters to find the passband-edge frequencies of lowpass signals. We first show that gradient algorithms cannot directly be applied because the mean square errors (MSEs) of output of IIR lowpass filters have no extremum. Then we introduce a weighting function to be multiplied with the transfer function so that MSB has an extremum. Structures to realize the proposed adaptive low-pass filters are shown. Simulations confirm the convergency of the proposed algorithms.

Original languageEnglish
Pages509-512
Number of pages4
Publication statusPublished - 2004 Dec 1
Event2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology - Tainan, Taiwan, Province of China
Duration: 2004 Dec 62004 Dec 9

Conference

Conference2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology
CountryTaiwan, Province of China
CityTainan
Period04/12/604/12/9

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Yamaguchi, K., Watanabe, E., & Nishihara, A. (2004). Adaptive lowpass filters. 509-512. Paper presented at 2004 IEEE Asia-Pacific Conference on Circuits and Systems, APCCAS 2004: SoC Design for Ubiquitous Information Technology, Tainan, Taiwan, Province of China.