The spectrum landscape for future cellular wireless systems is emerging as a patchwork of bands spanning wide ranges of frequencies including, most recently, new frequency bands in the so-called upper mid-band. Traditional exclusive licenses are increasingly difficult to find as these bands must be shared among competing services, most notably rapidly expanding satellite mega-constellations, and vital defense and public safety RADAR and tactical communications systems. These developments motivate novel spectrally agile systems for spectrum sensing, band selection, inter-network coordination, and resiliency to hostile attacks. In this talk, we will review recent results on developing spectrally agile systems in these bands including (1) capacity analyses with adaptive frequency hopping; (2) algorithms for satellite and terrestrial co-existence; (3) RF and digital architectures for reconfigurable, wideband massive MIMO platforms; and (4) experimental platforms for FR3.
Prof. Dr. Sundeep Rangan received the B.A.Sc. at the University of Waterloo, Canada and the M.Sc. and Ph.D. at the University of California, Berkeley, all in Electrical Engineering. He has held postdoctoral appointments at the University of Michigan, Ann Arbor and Bell Labs.In 2000, he co-founded (with four others) Flarion Technologies, a spin off of Bell Labs, that developed Flash OFDM, one of the first cellular OFDM data systems and pre-cursor to 4G systems including LTE and WiMAX. In 2006, Flarion was acquired by Qualcomm Technologies where Dr. Rangan was a Senior Director of Engineering involved in OFDM infrastructure products. He joined the ECE department at NYU Tandon (formerly NYU Polytechnic) in 2010. He is a Fellow of the IEEE and Associate Director of NYU WIRELESS, an academic-industry research center researching next-generation wireless systems.