Complex-analytic approach to the sinc-Gauss sampling formula

被引:18
作者
Tanaka, Ken'ichiro [1 ]
Sugihara, Masaaki [1 ]
Murota, Kazuo [1 ]
机构
[1] Univ Tokyo, Grad Sch Informat Sci & Technol, Dept Math Informat, Tokyo 1138656, Japan
关键词
sampling formula; sinc-Gaussian kernel; sinc numerical methods;
D O I
10.1007/BF03167520
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
This paper is concerned with theoretical error estimates for a sampling formula with the sinc-Gaussian kernel. Qian et al. have recently given an error estimate for the class of band-limited functions by Fourier-analytic approach. In contrast, we adopt in this paper a complex-analytic approach to derive an error estimate for a wider class of functions including unbounded functions on R. Part of the result of Qian et al. can be derived from ours as an immediate corollary. Computational results show a fairly good agreement with our theoretical analysis.
引用
收藏
页码:209 / 231
页数:23
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