4 papers
Near-Field Beampointing with Low Exposure Regions: a Dominant Subspace Projection Approach
Laurence Defraigne, Gilles Monnoyer, Jérôme Louveaux +1
The spherical nature of the wavefronts exhibited in the near-field of antenna arrays enables advanced beamforming capabilities, such as beampointing and beamnulling. In this paper,…
Aliasing in Near-Field Array Ambiguity Functions: a Spatial Frequency-Domain Framework
Gilles Monnoyer, Jérôme Louveaux, Laurence Defraigne +2
Next-generation communication and localization systems increasingly rely on extremely large-scale arrays (XL-arrays), which promise unprecedented spatial resolution and new functio…
Chirp-Based Aliasing Analysis of Arrays in the Spherical Wavefront Regime
Gilles Monnoyer, Laurence Defraigne, Baptiste Sambon +2
In antenna arrays, wave propagation modeling based on Euclidean principles is typically represented by steering vectors or signals. This paper provides a new, chirp-based, interpre…
Positioning and transmission in cell-free networks: ambiguity function, and MRC/MRT array gains
Luc Vandendorpe, Laurence Defraigne, Guillaume Thiran +2
Cell-free network is a new paradigm, originating from distributed MIMO, that has been investigated for a few recent years as an alternative to the celebrated cellular structure. Fu…