Christian Steffens

2 accepted papers

2017

A compact formulation for the l21 mixed-norm minimization problem

Christian Steffens, Marius Pesavento, Marc E. Pfetsch

ICASSP 2017accepted

We present an equivalent, compact reformulation of the ℓ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2,1</sub> mixed-norm minimization problem for joint sparse signal reconstruction from multiple measurement vectors (MMVs). The reformulation builds…

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2017

Gridless compressed sensing under shift-invariant sampling

Christian Steffens, Wassim Suleiman, Alexander Sorg, Marius Pesavento

ICASSP 2017accepted

Parameter estimation has applications in many fields of signal processing, such as spectral analysis or direction-of-arrival estimation. Subspace-based methods like root-MUSIC and ESPRIT provide high parameter resolution at low computational complexity by exploiting specific sampling structure, name…

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