Digital Signal Processing and Applications

Stranneby, Dag; Walker, William

doi:10.1016/b978-0-7506-6344-1.x5000-9

Cited by 17 publications

(1 citation statement)

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“…This is a well-known problem and the standard approaches to deal with such error contribution are detrending (drift correction) and windowing (spectral leakage correction) [16]. However, it is well known that detrending removes polynomial (mostly linear) trends in the time evolution [16,17] and that windowing itself is introducing spectral leakage and is subject to a tradeoff [18,19]. Hence, both can be useful but are not ideal.…”

Section: Introductionmentioning

confidence: 99%

Correcting for non-periodic behaviour in perturbative experiments: application to heat pulse propagation and modulated gas-puff experiments

Berkel

Kampen

Vandersteen

et al. 2020

Plasma Phys. Control. Fusion

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This paper introduces a recent innovation in dealing with nonperiodic behavior often referred to as transients in perturbative experiments. These transients can be the result from unforced response due to the initial condition and other slow trends in the measurement data and are a source of error when performing and interpreting Fourier spectra. Fourier analysis is particularly relevant in system identification used to build feedback controllers and the analysis of various pulsed experiments such as heat pulse propagation studies. The basic idea behind the methodology is that transients are continuous complex-valued smooth functions in the Fourier domain which can be estimated from the Fourier data. Then, these smooth functions can be subtracted from the data such that only periodic components are retained. The merit of the approach is shown in two experimental examples, i.e., heat pulse propagation (core transport analysis) and radiation front movement due to gas puffing in the divertor. The examples show that the quality of the data is significantly improved such that it allows for new interpretation of the results even for non-ideal measurements.

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Section: Introductionmentioning

confidence: 99%

Correcting for non-periodic behaviour in perturbative experiments: application to heat pulse propagation and modulated gas-puff experiments

Berkel

Kampen

Vandersteen

et al. 2020

Plasma Phys. Control. Fusion

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A dual protection scheme for impulsive noise suppression in OFDM systems

Jia

Meng

2014

AEU - International Journal of Electronics and Communications

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Coding-reduced digital audio signal by subband coding 4 channels using the new set of decimation ratios [6 6 3 3]

Trường¹

2013

2013 International Conference on Advanced Technologies for Communications (ATC 2013)

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The SBC (subband coding) using the multirate filter bank was proposed in 1980, this coding method splits full audio spectrum into subbands, and assigns more bits to each subband with higher energy. If the power spectral density (PSD) of any subbands is approximately zero, then those subbands need not be assigned any bits at all. While reconstruction, the subband signals are synthesized to the original signal. The most important advantage of SBC is very high reduced data rate, but the acceptable signal quality. Nowadays, all of the SBC applied in audio signal coding use the Wavelet analysis. Its decimation ratios must be the power of 2. That is the shortcoming in the Wavelet analysis. This paper has proposed a new set of decimation ratios. When the SBC uses this set, it decreases data rate, compared to other used sets in condition of the same number of subbands.

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Digital Signal Processing and Applications

Cited by 17 publications

References 0 publications

Correcting for non-periodic behaviour in perturbative experiments: application to heat pulse propagation and modulated gas-puff experiments

Correcting for non-periodic behaviour in perturbative experiments: application to heat pulse propagation and modulated gas-puff experiments

A dual protection scheme for impulsive noise suppression in OFDM systems

Coding-reduced digital audio signal by subband coding 4 channels using the new set of decimation ratios [6 6 3 3]

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