Abstract
Let H be a separable Hilbert space. In this paper, we establish a generalization of Walnut's representation and Janssen's representation of the H-valued Gabor frame operator on H-valued weighted amalgam spaces WH(Lp, Lqv ), 1 ≤ p, q ≤ ∞. Also, we show that the frame operator is invertible on WH(Lp, Lqv ), 1 ≤ p, q ≤ ∞, if the window function is in the Wiener amalgam space WH(L∞, L1 w). Further, we obtain the Walnut representation and invertibility of the frame operator corresponding to Gabor superframes and multiwindow Gabor frames on WH(Lp, Lqv ), 1 ≤ p, q ≤ ∞, as a special case by choosing the appropriate Hilbert space H.
Original language | English |
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Pages (from-to) | 377-394 |
Number of pages | 18 |
Journal | Advances in Pure and Applied Mathematics |
Volume | 10 |
Issue number | 4 |
DOIs | |
Publication status | Published - 1 Oct 2019 |
Keywords
- Amalgam spaces
- Gabor expansions
- Gabor frames
- Sampling
- Superframes
- Time-frequency analysis
- Walnut representation
- Wexler-Raz biorthogonality
- Wiener's Lemma