Topic: Delay-Doppler Communication and Sensing for High-Mobility Environments

Abstract:

I will give an overview of delay-Doppler communications techniques that sparked the interest of the wireless community since Hadani's proposal of Orthogonal Time Frequency Space (OTFS) in 2017. It was shown to offer significant advantages over Orthogonal Frequency Division Multiplexing (OFDM) in doubly dispersive channels found in high-mobility wireless communications scenarios. The key idea of OTFS is to model mobile wireless channels in the delay Doppler domain, where a sparse nature of the geometry of the wireless channel is captured.

This lecture series will introduce the general notion of OTFS/delay-Doppler communications, starting from the fundamentals of high-mobility wireless channels, followed by the transceiver architecture used for detection and channel estimation, and finally discuss some applications. The four-part sequence of lectures will cover:

1) Introduction to OTFS and the delay-Doppler point of view.

2) Detection methods.

3) Channel estimation methods with connection to sensing.

4) An example of application to joint communication and sensing in OTFS-based UAV Networks.

These lectures are more about Communications Theory than pure Information Theory. However, I will focus on some interesting applications of coding and decoding techniques in the context. Presenting the delay-Doppler communication channel to the Information Theory community should inspire further work in this direction.

Bio:

Emanuele Viterbo is a Professor in the Department of Electrical and Computer Systems Engineering at Monash University, Australia. He served as Head of Department and Associate Dean of Graduate Research in the Faculty of Engineering at Monash University.

Prof. Viterbo obtained his degree and a Ph.D. in Electrical Engineering, both from Politecnico di Torino, Turin, Italy. From 1990 to 1992, he worked at the European Patent Office, The Hague, The Netherlands, as a patent examiner in the field of dynamic recording and error-control coding. In 1997–1998, he was a post-doctoral research fellow in the Information Sciences Research Center of AT&T Research, Florham Park, NJ, USA.

Prof. Viterbo is a Fellow of the IEEE (2011), ISI Highly Cited Researcher (2009), Member of the Board of Governors of the IEEE Information Theory Society (2011–2016), Conference Committee Chair of the IEEE Information Theory Society (2016-2018). He served as an Associate Editor for IEEE Transactions on Information Theory, European Transactions on Telecommunications, and the Journal of Communications and Networks.

He was the General Co-chair of the 2021 IEEE International Symposium on Information Theory and of the 2009 IEEE Information Theory Workshop, and TPC Chair and of the 2014 IEEE Information Theory Workshop. His main research interests are in waveform design, polar coding, sphere decoding, lattice codes for Gaussian and fading channels, algebraic coding theory, algebraic space-time coding, digital terrestrial television broadcasting, NAND-flash memory storage, and digital magnetic recording.