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- W3169372778 abstract "Reconstructing a band-limited function from its finite sample data is a fundamental task in signal analysis. A Gaussian regularized Shannon sampling series has been proved to be able to achieve exponential convergence for uniform sampling. Whether such an exponential convergence can also be achieved for nonuniform sampling by regularization methods was unresolved. In this paper, we give an affirmative and constructive answer to this question. Specifically, we show that one can recover a band-limited function by Gaussian or hyper-Gaussian regularized nonuniform sampling series with an exponential convergence rate. Our analysis is based on the residue theorem in complex analysis, which is used to represent the truncated error by a contour integral. Several concrete examples of nonuniform sampling with exponential convergence will be presented." @default.
- W3169372778 created "2021-06-22" @default.
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- W3169372778 date "2021-06-16" @default.
- W3169372778 modified "2023-09-25" @default.
- W3169372778 title "Exponential Approximation of Band-limited Functions from Nonuniform Sampling by Regularization Methods" @default.
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- W3169372778 doi "https://doi.org/10.48550/arxiv.2106.08647" @default.
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