Course Description

Reliable Vehicular Communications in Non-Stationary Propagation Conditions

Seminar given by Thomas Zemen, Senior Scientist, AIT Austrian Institute of Technology

In Louvain-la-Neuve, Maxwell building, Nyquist room (A164), Place du Levant 3.

Abstract
Automated driving and driver assistance systems require the reliable exchange of kinematic information and sensor data over wireless communication links with short latency to achieve a substantially higher safety level than current vehicles.

Vehicular communication channels are characterized by a non-stationary time- and frequency-selective fading process due to rapid changes in the environment. We introduce the local scattering function (LSF) as an efficient tool to obtain the time-frequency-varying root mean square (RMS) delay spread and the RMS Doppler spread. Furthermore, we also analyze the time-variant Rician K-factor. We show that the distribution of these channel parameters follows a bi-modal Gaussian mixture distribution. With this fundamental channel characterization, we can (1) calibrate geometry based channel models for safety critical crossing scenarios and obtain reliable link-level performance results for cooperative relaying transmission schemes and (2) model tunnel scenarios using a hybrid ray-tracing and propagation graph algorithm.

Biography
Thomas Zemen received the Dipl.-Ing. degree (with distinction) in electrical engineering in 1998, the doctoral degree (with distinction) in 2004 and the Venia Docendi (Habilitation) for "Mobile Communications" in 2013, all from Vienna University of Technology.
From 1998 to 2003 he worked as Hardware Engineer and Project Manager for the Radio Communication Devices Department, Siemens Austria. From 2003 to 2015 Thomas Zemen was with FTW Telecommunications Research Center Vienna and Head of the "Signal and Information Processing" department since 2008. Since 2014 Thomas Zemen has been Senior Scientist at AIT Austrian Institute of Technology leading the research group for ultra-reliable wireless machine-to-machine communications.
He is the author or coauthor of four books chapters, 32 journal papers and more than 80 conference communications. His research interests focus on reliable, low-latency wireless communications for highly autonomous vehicles, sensor and actuator networks, vehicular channel measurements and modeling, time-variant channel estimation, cooperative communication systems and interference management.
Dr. Zemen is an External Lecturer with the Vienna University of Technology and serves as Editor for the IEEE Transactions on Wireless Communications.

Contact Information
THOMAS ZEMEN
Senior Scientist
Digital Safety & Security Department
Optical Quantum Technology
AIT Austrian Institute of Technology GmbH
Donau-City-Straße 1 | 1220 Vienna | Austria
T +43 50550-4138 | M +43 664 88390738
thomas.zemen@ait.ac.at | http://www.ait.ac.at | http://thomaszemen.org/

Registration

Free but requested on Musics website : sites.uclouvain.be/doctoralschool-musics/CoursesList