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ICASSP
2011
IEEE

High-order center-frequency adaptive filters using block-diagram-based frequency transformation

12 years 7 months ago
High-order center-frequency adaptive filters using block-diagram-based frequency transformation
This paper proposes a simple method of realization of centerfrequency adaptive filters for high-accuracy detection of band-pass signals immersed in a broadband signal. Our method extends the conventional method proposed by Kumar and Pal. While the conventional center-frequency adaptive filters were mathematically difficult to describe in the case of high filter order, our method provides a simple procedure to construct any kind of high-order center-frequency adaptive filter. We achieve this goal with the help of the frequency transformation and its block diagram representation. Simulation results show that our high-order center-frequency adaptive filters achieve higher signal-to-noise ratio (SNR) improvement than the conventional low-order filters including the adaptive notch filters.
Shunsuke Koshita, Yuki Kumamoto, Masahide Abe, Mas
Added 21 Aug 2011
Updated 21 Aug 2011
Type Journal
Year 2011
Where ICASSP
Authors Shunsuke Koshita, Yuki Kumamoto, Masahide Abe, Masayuki Kawamata
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