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A new algorithm in spectral analysis and band-limited extrapolation

Papoulis, A.·1975·IEEE Transactions on Circuits and Systems

Abstract

If only a segment of a functionf (t)is given, then its Fourier spectrumF(\omega)is estimated either as the transform of the product off(t)with a time-limited windoww(t), or by certain techniques based on various a priori assumptions. In the following, a new algorithm is proposed for computing the transform of a band-limited function. The algorithm is a simple iteration involving only the fast Fourier transform (FFT). The effect of noise and the error due to aliasing are determined and it is shown that they can be controlled by early termination of the iteration. The proposed method can also be used to extrapolate bandlimited functions.

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Metadata

Authors
Papoulis, A.
Venue
IEEE Transactions on Circuits and Systems
Published
1975-09
Volume
22
Issue
9
Pages
735-742
ISSN
0098-4094 (ISSN-L)
OpenAlex
W2108943734
Cited by
1,063
References
1
FWCI
1.81
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: A new algorithm in spectral analysis and band-limited extrapolation. https://app.cochat.ai/papers/10.1109/tcs.1975.1084118
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Papoulis, A. (1975). A new algorithm in spectral analysis and band-limited extrapolation. IEEE Transactions on Circuits and Systems. https://doi.org/10.1109/tcs.1975.1084118

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