Invited speakers

V2V Communication Channels: State of Knowledge, New Results, and What's Next
David W. Matolak, Department of Electrical Engineering, University of South Carolina, Columbia, SC matolak [at]


This paper surveys the field of vehicle-to-vehicle (V2V) communication channels. Motivated by intelligent transportation systems and vehicular safety, V2V research has proliferated in recent years. We provide a short description of V2V communication systems, and the importance of key channel parameters. This is followed by a discussion of basic channel characteristics—the channel impulse response and channel transfer function, and their statistical description—and how V2V channels differ from the more familiar cellular radio channel. Modeling of the V2V channel is covered next by a review of the literature on V2V channels, addressing path loss, delay spread, and Doppler spread. We describe the two most popular methods for modeling V2V channels, tapped-delay line models and geometry-based models, then briefly dis-cuss multiple-antenna channels and the crucial V2V channel characteristic of non-stationarity. A potential channel classifi-cation scheme for V2V channels is given, and some recent results on the channel within parking garages, and on sloped ter-rain, are provided. We end the paper with a short discussion of what may come next in this vibrant field.

Keywords vehicle to vehicle communications, propagation

Short Bio

David W. Matolak was received the B.S. degree from The Pennsylvania State University, University Park, the M.S. degree from The University of Massachusetts, Amherst, and the Ph.D. degree from The University of Virginia, Charlottesville, all in electrical engineering. He has over 20 years of experience in the analysis, design, development, and deployment of various types of communication systems, including terrestrial, aeronautical, and satellite, for both commercial and military systems. Past employers include the Rural Electrification Administration, Washington, D.C., the UMass LAMMDA Laboratory, Amherst, MA, AT&T Bell Laboratories, North Andover, MA, the University of Virginia's Communication Systems Laboratory, Lockheed Martin Tactical Communication Systems, the MITRE Corporation, and Lockheed Martin Global Telecommunications. From 1999-2012, he was with the School of Electrical Engineering and Computer Science, Ohio University, Athens, OH, and in 2012 joined the Department of Electrical Engineering at the University of South Carolina. He has been a visiting professor at the National Institute of Standards & Technology, Boulder, CO, the University of Malaga, Spain, and NASA Glenn Research Center. He has obtained research funding support from several national organizations, including DARPA/AFRL, NSF, NASA, NIST, and the FAA, and from two private industries: L3 Communication Systems, and Texas Instruments. He has published approximately 100 papers, and has eight US patents. Current research interests include statistically non-stationary wireless channel measurement and modeling, multicarrier and multi-band modulation and detection, and physical-layer investigations of ad hoc networking.
Dr. Matolak is a member of Eta Kappa Nu and Sigma Xi, and a Senior Member of the IEEE. He has served on dozens of IEEE Conference Technical Program committees and was also Chair of the Geo Mobile Radio Standards group in the Telecommunications Industries Association's Satellite Communications Division. He is an associate editor for the IEEE Transactions on Vehicular Technology, the International Journal of Intelligent Transportation Systems Research, and a founding member of the IEEE Vehicular Technology Society's Committee on Vehicle-to-Vehicle Channel Modeling.

Internet Onboard: technical analysis
Hassan Ghannoum & David Sanz, SNCF, France (hassan.ghannoum,david.sanz) [at]


This paper gives an overview of wireless technologies solutions that could be used in order to deliver onboard Internet Access Service to train passengers, high speed trains included. These solutions include satellite and terrestrial technologies. The paper discusses the different solutions and presents their advantages, drawbacks and their constraints of implementation as well. Finally, some conclusions and perspectives of future research and development challenges are given.

Keywords Internet Access Service, satellite technologies, cellular technolo-gies, train-to-trackside communications.

Short Bios

Dr. Hassan Ghannoum received the Engineer Diploma in Electronics and Telecommunications from the Lebanese University, Faculté de Génie I, Lebanon, in 2002 and the Ph.D. degree in Electronics and Communications from TELECOM ParisTech (ENST), Paris, France, in 2006, where his research activities were in Ultra Wide Band communications, Personal and Body Area Networks, antenna design and channel measurement and modeling. During his Ph.D. he has authored or co-authored about 10 papers published in international journals and conference proceedings. From 2007 to 2010, he worked for PSA Peugeot Citroën, Vélizy-Villacoublay, France. During this period, his main activities lied in the area of vehicular embedded antennas (antenna design, implementation, optimization and characterization) for different wireless applications. In February 2010, he joined SNCF's Innovation & Research Department, as a Research Engineer and Project Manager in the area of wideband mobile radio communications. He is currently a Research Engineer and Project Manager at "Information-Communication-Services" Research Group at SNCF's Innovation & Research Department

Mr. David Sanz is the Head of "Information-Communication-Services" Research Group at SNCF's Innovation & Research Department (Paris, France)
Mr. David Sanz is a Telecommunications Engineer (Ecole Nationale Superieure de Télécommunications, Paris, 2000), with a last year specialisation and a DEA (Diplôme d'Etudes Approfondies) in "Satellite Telecommunication Networks". He works at SNCF's Innovation & Research Department since year 2000. Between 2000 and 2009 as a Research Engineer, dealing with radio-communication applications at SNCF, with two main domains of activity: 1/ wireless-LAN networks and applications (WiFi, Bluetooth, HotSpot services, WiFi-based location services, mobile ad-hoc networks - French National project "SAFARI"-, Wireless Sensor Networks…) and 2/ satellite and terrestrial radio-communication networking solutions for train-ground high data-rate communications (participation to the experimental campaign of the "FIFTH" Project –IST 5th FP-, partner of the "SAET" Project -European Space Agency-, partner of the "TRAINS-IP-SAT" Project -French DoT-, partner of FP6's "InteGRail" Integrated Project, partner of Celtic/Eureka's "BOSS" project…). In 2009 he became head of the 'Information-Communication-Services" Research Group.

A QoS-based multi-user scheduler applied to railway radio communications
Nicolas Gresset, Jonathan Letessier, Hervé Bonneville, Communications Technology Division, Mitsubishi Electric R&D Centre Europe, Rennes N.Gresset [at]


This paper investigates what role could play the 3GPP LTE in railway radio-communications. We study a first case of shared infrastructure where the train control traffic is subcontracted to a public land mobile network operator, and a second case of dedicated infrastructure where the LTE-like network only supports the railway communications. We highlight the multi-user scheduler as the key enabler for managing a heterogeneity of sensitive and best effort traffic, and propose a new scheduler that maximizes the best effort traffic throughput while guarantying the sensitive traffic quality of service.

Short bio

Nicolas Gresset was born in France, in 1978.
In 2004, he received the Ph.D. degree from Télécom Paristech, Paris, France, in collaboration with Mitsubishi Electric R&D Centre Europe.
In 2005, he was a postdoctoral researcher in Orange Labs, Issy les Moulineaux, France.
In 2006, he was senior engineer in Wipro-Newlogic and delegate to IEEE 802.11n standardization.
From 2007, he is a researcher in Mitsubishi Electric R&D Centre Europe, and has been participating to 3GPP RAN1 standardization.
He has now a transversal innovation role, from the physical layer algorithms design up to architecture constraints and solutions.
The domains of application of his research studies are the cellular heterogeneous networks, wireless mesh networks, and communication systems for trains and cars.