摘要
本文主要研究L2(Rd)上的Gabor系成为框架或框架序列的特征。首先在时域上给出了Gabor系成为L2(Rd)上框架或框架序列的两个充分条件,并得到在特殊情形下Gabor系成为框架序列的充要条件。最后在频域上也给出了相应的结果。
The purpose of this paper is to characterize a Gabor system which generates a frame or a frame sequence for L^2(R^d). Proved are two sufficient conditions with which the Gabor system can be a frame or a frame sequence for L^2(R^d) in time domain. Under some special cases, the sufficient conditions are also necessary. The analogous results in frequency domain are also given at the end of the paper.
出处
《工程数学学报》
CSCD
北大核心
2008年第3期449-456,共8页
Chinese Journal of Engineering Mathematics
基金
国家自然科学基金(10671062)
河南省创新型科技人才队伍建设工程资助项目.