A necessary condition is given for general nonuniform Gabor frames, which generalizes Benedetto and Walnut＇s theorem. A sufficient and necessary condition for a class of nonuniform Gabor frames is proved.
关键词：
wavelet
Gabor frame
density
作者机构：
[ 1 ]
Beijing Univ Technol, Dept Appl Math, Beijing 100022, Peoples R China
通讯作者信息：
刘有明
[Liu Youming]Beijing Univ Technol, Dept Appl Math, Beijing 100022, Peoples R China
