A Characterization of Affine Dual Frames
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Marcin Bownik
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Article
📅
2000
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Elsevier Science
🌐
English
⚖ 166 KB
We give a characterization of all (quasi)affine frames in L 2 (R n ) which have a (quasi)affine dual in terms of the two simple equations in the Fourier transform domain. In particular, if the dual frame is the same as the original system, i.e., it is a tight frame, we obtain the well-known characte