Phase retrieval for wide-band signals
PEREZ III, Rolando
Institut de Mathématiques de Bordeaux [IMB]
University of the Philippines [UP System]
Institut de Mathématiques de Bordeaux [IMB]
University of the Philippines [UP System]
PEREZ III, Rolando
Institut de Mathématiques de Bordeaux [IMB]
University of the Philippines [UP System]
< Réduire
Institut de Mathématiques de Bordeaux [IMB]
University of the Philippines [UP System]
Langue
en
Article de revue
Ce document a été publié dans
Journal of Fourier Analysis and Applications. 2020, vol. 26, p. 54
Springer Verlag
Résumé en anglais
This study investigates the phase retrieval problem for wide-band signals. We solve the following problem: given f ∈ L 2 (R) with Fourier transform in L 2 (R, e^{2c|x|} dx), we find all functions g ∈ L 2 (R) with Fourier ...Lire la suite >
This study investigates the phase retrieval problem for wide-band signals. We solve the following problem: given f ∈ L 2 (R) with Fourier transform in L 2 (R, e^{2c|x|} dx), we find all functions g ∈ L 2 (R) with Fourier transform in L 2 (R, e^{2c|x| dx}), such that |f (x)| = |g(x)| for all x ∈ R. To do so, we first translate the problem to functions in the Hardy spaces on the disc via a conformal bijection, and take advantage of the inner-outer factorization. We also consider the same problem with additional constraints involving some transforms of f and g, and determine if these constraints force uniqueness of the solution.< Réduire
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