11 citations · 18 across the 4 of their papers we have counts for
7 papers
Beurling-type density criteria for system identification
V. Vlačić, C. Aubel, H. Bölcskei
This paper addresses the problem of identifying a linear time-varying (LTV) system characterized by a (possibly infinite) discrete set of delay-Doppler shifts without a lattice (or…
Vandermonde Matrices with Nodes in the Unit Disk and the Large Sieve
Céline Aubel, Helmut Bölcskei
We derive bounds on the extremal singular values and the condition number of NxK, with N>=K, Vandermonde matrices with nodes in the unit disk. The mathematical techniques we develo…
Deterministic Performance Analysis of Subspace Methods for Cisoid Parameter Estimation
Céline Aubel, Helmut Bölcskei
Performance analyses of subspace algorithms for cisoid parameter estimation available in the literature are predominantly of statistical nature with a focus on asymptoticeither…
A Theory of Super-Resolution from Short-Time Fourier Transform Measurements
Céline Aubel, David Stotz, Helmut Bölcskei
While spike trains are obviously not band-limited, the theory of super-resolution tells us that perfect recovery of unknown spike locations and weights from low-pass Fourier transf…
Density Criteria for the Identification of Linear Time-Varying Systems
Céline Aubel, Helmut Bölcskei
This paper addresses the problem of identifying a linear time-varying (LTV) system characterized by a (possibly infinite) discrete set of delays and Doppler shifts. We prove that s…
Super-Resolution from Short-Time Fourier Transform Measurements
Céline Aubel, David Stotz, Helmut Bölcskei
While spike trains are obviously not band-limited, the theory of super-resolution tells us that perfect recovery of unknown spike locations and weights from low-pass Fourier transf…
Sparse Signal Separation in Redundant Dictionaries
Céline Aubel, Christoph Studer, Graeme Pope +1
We formulate a unified framework for the separation of signals that are sparse in "morphologically" different redundant dictionaries. This formulation incorporates the so-called "a…