Frame potential and finite abelian groups

Details Frame potential and finite abelian groups Frame potential and finite abelian groups

2008-01-24

arxiv.org/abs/0801.3813v1

Mathematics

Classical Analysis and ODEs

Scientific paper

This article continues a prior investigation of the authors with the goal of extending characterization results of convolutional tight frames from the context of cyclic groups to general finite abelian groups. The collections studied are formed by translating a number of \emph{generators} by elements of a fixed subgroup and it is shown, under certain norm conditions, that tight frames with this structure are characterized as local minimizers of the frame potential. Natural analogs to the downsampling and upsampling operators of finite cyclic groups are studied for arbitrary subgroups of finite abelian groups. Directions of further study are also proposed.

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