摘要
The Shannon sampling theorem is one of the foundations for modern signal processing.Assume that a signal f（t）∈L^2（R）.σ〉0 is a constant.Signal f（t） is calledσ-band-limitedif ｜ω｜〉σ,F（ω） = f_（-∞）~∞f（t）e^（-iω≧t）dt = 0.The Shannon sampling theorem says that aσ-band-limitedf（t） can be reconstructed exactly by its all sampling points at the equal interval h≤π/σ.The reconstructed formula
出处
《数学进展》
CSCD
北大核心
2012年第2期253-255,共3页
Advances in Mathematics（China）
基金
Supported partially by NSFC(No.61071144)
