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• W2891545608 abstract "As an extension of Gabor frames, nonstationary Gabor (NSG) frames were recently introduced in adaptive signal analysis. They allow for efficient reconstruction with flexible sampling and varying window functions. In this paper we generalize the notion of NSG frames from L2(R) to the vector-valued Hilbert space L2(R,CL), and investigate the resulting vector-valued NSG frames. We derive a Walnut's representation of the mixed frame operator, and provide some necessary/sufficient conditions for a vector-valued NSG system to be a frame for L2(R,CL). Furthermore, we show the existence of painless vector-valued NSG frames, and of vector-valued NSG frames with fast decaying window functions." @default.
• W2891545608 created "2018-09-27" @default.
• W2891545608 creator A5008557639 @default.
• W2891545608 creator A5014295844 @default.
• W2891545608 date "2019-01-01" @default.
• W2891545608 modified "2023-09-26" @default.
• W2891545608 title "Vector-valued nonstationary Gabor frames" @default.
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• W2891545608 doi "https://doi.org/10.1016/j.jmaa.2018.09.019" @default.
• W2891545608 hasPublicationYear "2019" @default.
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