Performance Analyses of Notch Fourier Transform(NFT) and Constrained Notch Fourier Transform(CNFT)
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概要
- 論文の詳細を見る
Fourier analysis of sinusoidal and/or quasi-periodic signals in additive noise has been used in various fields. So far, many analysis algorithms including the well-known DFT have been developed. In particular, many adaptive algorithms have been proposed to handle non-stationary signals whose discrete Fourier coefficients(DFCs) are time-varying. Notch Fourier Transform(NFT) and Constrained Notch Fourier Transform(CNFT) proposed by Tadokoro et al.and Kilani et al., respectively, are two of them, which are implemented by filter banks and estimate the DFCs via simple sliding algorithms of their own. This paper presents, for the first time, statistical performance analyses of the NFT and the CNFT. Estimation biases and mean square errors(MSEs) of their sliding algorithms will be derived in closed form. As a result, it is revealed that both algorithms are unbiased, and their estimation MSEs are related to the signal frequencies, the additive noise variance and orders of comb filters used in their filter banks. Extensive simulations are performed to confirm the analytical findings.
- 社団法人電子情報通信学会の論文
- 2000-09-25
著者
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Matsuo Taku
The Department Of Computer Science And Electronics Kyushu Institute Of Technology
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Matsuo T
The Author Is With The Tr Production Division Rohm-apollo Device Co. Ltd.
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XIAO Yegui
Faculty of Human Life and Environmental Science, Hiroshima Prefectural Women's University
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MATSUO Takahiro
Faculty of Science and Engineering, Saga University
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SHIDA Katsunori
Faculty of Science and Engineering, Saga University
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Xiao Y
The Author Is With The Faculty Of Human Life And Environmental Science Hiroshima Prefectural Women&a
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Xiao Yegui
Faculty Of Engineering Hiroshima University
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Matsuo Takahiro
Matsushita Electric Industrial Co. Ltd. (panasonic)
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Shida K
The Author Is With The Faculty Of Science And Engineering Saga University
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Shida Katsunori
Faculty Of Science And Engineering Saga University
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