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Filbir, F. ; Krahmer, F.*

On the randomized Kaczmarz algorithm for phase retrieval.

In: (55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021, 31 October - 3 November 2021, Virtual, Pacific Grov). 2022. 847-851 (Conference Record - Asilomar Conference on Signals, Systems and Computers ; 2021-October)
DOI
We investigate a variant of the randomized Kaczmarz algorithm as a method for solving the phase retrieval problem. The main contribution of this paper is a recovery guarantee for phase retrieval from measurements perturbed with additive noise via the randomized Kaczmarz algorithm. We consider the scenario that the measurement vectors are drawn independently and uniformly at random from the unit sphere and that the number of measurements is a sufficiently large multiple of the dimension. We show that, with high probability, the randomized Kaczmarz algorithm converges to a neighborhood around the ground-truth solution whose radius depends on the noise level.
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Publikationstyp Artikel: Konferenzbeitrag
Korrespondenzautor
Schlagwörter Additive Noise ; Kaczmarz Algorithm ; Phase Retrieval
ISSN (print) / ISBN 1058-6393
Konferenztitel 55th Asilomar Conference on Signals, Systems and Computers, ACSSC 2021
Konferzenzdatum 31 October - 3 November 2021
Konferenzort Virtual, Pacific Grov
Quellenangaben Band: 2021-October, Heft: , Seiten: 847-851 Artikelnummer: , Supplement: ,
Nichtpatentliteratur Publikationen
Institut(e) Institute of Biological and Medical Imaging (IBMI)
Förderungen Helmholtz Association