71 citations · 360 across the 31 of their papers we have counts for
4 papers · 1 filter
The Algebraic Approach to Phase Retrieval and Explicit Inversion at the Identifiability Threshold
Franz J Király, Martin Ehler
We study phase retrieval from magnitude measurements of an unknown signal as an algebraic estimation problem. Indeed, phase retrieval from rank-one and more general linear measurem…
Tight and random nonorthogonal fusion frames
Jameson Cahill, Peter G. Casazza, Martin Ehler +1
First we show that tight nonorthogonal fusion frames a relatively easy to com by. In order to do this we need to establish a classification of how to to wire a self adjoint operato…
Preconditioning filter bank decompositions using structured normalized tight frames
Martin Ehler
We turn a given filter bank into a filtering scheme that provides perfect reconstruction, synthesis is the adjoint of the analysis part (so-called unitary filter banks), all filter…
Minimization of the Probabilistic p-frame Potential
Martin Ehler, Kasso A. Okoudjou
We investigate the optimal configurations of n points on the unit sphere for a class of potential functions. In particular, we characterize these optimal configurations in terms of…