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The optimal transform for the discrete Hirschman uncertainty principle

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3 Author(s)
Przebinda, T. ; Dept. of Math., Oklahoma Univ., Norman, OK, USA ; DeBrunner, V. ; Ozaydin, M.

We determine all signals giving equality for the discrete Hirschman uncertainty principle. We single out the case where the entropies of the time signal and its Fourier transform are equal. These signals (up to scalar multiples) form an orthonormal basis giving an orthogonal transform that optimally packs a finite-duration discrete-time signal. The transform may be computed via a fast algorithm due to its relationship to the discrete Fourier transform

Published in:

Information Theory, IEEE Transactions on  (Volume:47 ,  Issue: 5 )

Date of Publication:

Jul 2001

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