Spectrally Agile Systems for Wireless Communications, Sensing, and Control

par

Sundeep RANGAN

Professor (NYU WIRELESS Laboratory, New York University Tandon)

Lieu : LAAS-CNRS – Salle de Conférences 7 avenue du Colonel Roche 31077 TOULOUSE Cedex 4

Formulaire à remplir avant le séminaire :  https://www.laas.fr/fr/zrr/

Résumé :

The spectrum landscape for wide-area wireless systems is rapidly changing.   Fifth generation (5G) cellular systems opened up large swaths of spectrum in the millimeter wave (mmWave) bands that offered massive peak data rates.  But obtaining reasonable coverage at practical cell densities has been a challenge.  Recent interest has now focused on the so-called upper mid-band from 7 to 24 GHz that hopes to offer a balance of coverage and spectrum.  But, cellular services in these bands must compete with incumbent services, notably rapidly expanding satellite mega constellations and vital existing defense systems.  Available spectrum is thus emerging as a range of disparate bands with intermittent availability and coverage to be shared among a plurality of competing services.  These developments will force a new area of agile spectrum sharing systems where multiple services support a wide range of bands where the frequency of operation! changes dynamically.  In this talk, we will review recent results on developing such spectrally agile systems including (1) capacity analyses with adaptive frequency hopping; (2) algorithms for satellite and terrestrial co-existence; (3) new localization systems and their use in robotic navigation, and (4) novel experimental platforms.  Joint work with Marco Mezzavilla (Politecnico di Milano), Hamed Rahmani (NYU), Aditya Dhananjay, and Mike Zappe (Pi-Radio).