Performance analysis of adaptive notch filter using multirate technique

Nishimura, Shigeo; Kim, J.K.; Hirano, Kyoko; Kayano, Takashi

doi:10.1109/iscas.1991.176431

Cited by 3 publications

(1 citation statement)

References 11 publications

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“…It was shown that a stable detection performance can be realized. In their methods, however, the sampling rate conversion and the filtering are separately executed [13,14].…”

confidence: 99%

Adaptive IIR bandpass decimation filter for single sinusoid detection

Hashimoto

et al. 2000

Electron. Comm. Jpn. Pt. III

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This paper proposes an adaptive second‐order IIR bandpass decimation filter for detecting a single sinusoid with an unknown frequency embedded in noise. The purpose is to realize a filter with high Q (selectivity) and less output amplitude fluctuation after convergence. As the first step, the adaptive second‐order IIR bandpass filter with the variable center frequency is outlined. Then, we present a new method that derives the decimation filter function with a small amount of computation. The filter is derived from the above filter with the denominator coefficient made variable, and with the polynomial of z−M as the denominator, where M (integer) is the decimation ratio. A method is shown to design the adaptive signal generator and the coefficient update circuit for a single sinusoid detection adaptive filter based on the proposed method. Lastly, the convergence and the output error characteristics of the proposed adaptive decimation filter are examined by a computer simulation example. © 2000 Scripta Technica, Electron Comm Jpn Pt 3, 83(7): 91–101, 2000

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“…It was shown that a stable detection performance can be realized. In their methods, however, the sampling rate conversion and the filtering are separately executed [13,14].…”

confidence: 99%

Adaptive IIR bandpass decimation filter for single sinusoid detection

Hashimoto

et al. 2000

Electron. Comm. Jpn. Pt. III

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Adaptive sinusoid detection using IIR notch filters and multirate techniques

Petraglia

Mitra

Szczupak

1994

IEEE Trans. Circuits Syst. II

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In this paper, a new structure for the detection of sinusoids using adaptive IIR notch filters and multirate techniques is presented. By using the frequency enhancement property of the decimation in time process, the proposed structure avoids the use of almost unity radius notch filters. A stochastic analysis of the convergence properties of the proposed multirate IIR notch filter structure is discussed. The analysis verifies the low adaptation coefficient variance of the proposed structure, and the small bias in the frequency estimates of multiple sinusoidal signal. Computer simulations show the superior performance of the proposed structure for the detection of closely-spaced sinusoids and tracking of nonstationary sinusoidal signals.

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Adaptive detection and enhancement of closely spaced sinusoids using multirate techniques

Nishimura

1993

IEEE International Conference on Acoustics Speech and Signal Processing

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Performance analysis of adaptive notch filter using multirate technique

Cited by 3 publications

References 11 publications

Adaptive IIR bandpass decimation filter for single sinusoid detection

Adaptive IIR bandpass decimation filter for single sinusoid detection

Adaptive sinusoid detection using IIR notch filters and multirate techniques

Adaptive detection and enhancement of closely spaced sinusoids using multirate techniques

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