WNCG Seminar - Dr. Ronny Hadani

Abstract: In this talk I will derive the OTFS waveform from the Zak theoretic perspective and discuss its utility for communication and sensing/Radar. I will explain that OTFS is, in fact, a one parametric family of waveforms, called pulsones, which generalizes both traditional single carrier and multi-carrier waveforms. I will emphasize a specific regime of the parameter called the crystalline regime, where the coupling with the doubly spread channel exhibits a particularly regular structure, which, in turns, renders it ideal both for radar sensing and for communication. Along the way, I will point out a new theoretical insight about the phenomena of selectivity (fading), explaining its root cause to be aliasing in the delay-Doppler domain. I will conclude my talk with a description of a unified architecture for joint sensing and communication based on unbiased system of pulsones. The talk is aimed for students and, partly, my goal is to facilitate intuitive understanding of the main ideas behind the mathematical theory of communication in the delay-Doppler domain.

 

Biography: Ronny Hadani is an associate professor in the Mathematics Department of the University of Texas at Austin. He is a co-inventor of the OTFS modulation technique and is a co-founder of Cohere Technologies, a company pioneering OTFS based communication technologies. Hadani holds a PhD in pure mathematics from Tel-Aviv University and a Master degree in applied mathematics from The Weizmann Institute of Science.