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math.FA2025
Cyclic frames in finite-dimensional Hilbert spaces
Ole Christensen, Navneet Redhu, Niraj K. Shukla
Generalizing a definition by Kalra \cite{Kalra}, the purpose of this paper is to analyze cyclic frames in finite-dimensional Hilbert spaces. Cyclic frames form a subclass of the dy…
math.FA2015
On Gabor frames generated by sign-changing windows and B-splines
Ole Christensen, Hong Oh Kim, Rae Young Kim
For a class of compactly supported windows we characterize the frame property for a Gabor system $\mts,$ for translation parameters belonging to a certain range depending on th…