Architectures of Next Generation Wireless Networks

Pascal Lorenz, PhD

University of Haute Alsace, France

Tutorial is available in PDF.
Emerging Internet Quality of Service (QoS) mechanisms are expected to enable wide spread use of real time services such as VoIP and videoconferencing. The “best effort” Internet delivery cannot be used for the new multimedia applications. New technologies and new standards are necessary to offer Quality of Service (QoS) for these multimedia applications. Therefore new communication architectures integrate mechanisms allowing guaranteed QoS services as well as high rate communications.

The service level agreement with a mobile Internet user is hard to satisfy, since there may not be enough resources available in some parts of the network the mobile user is moving into. The emerging Internet QoS architectures, differentiated services and integrated services, do not consider user mobility. QoS mechanisms enforce a differentiated sharing of bandwidth among services and users. Thus, there must be mechanisms available to identify traffic flows with different QoS parameters, and to make it possible to charge the users based on requested quality. The integration of fixed and mobile wireless access into IP networks presents a cost effective and efficient way to provide seamless end-to-end connectivity and ubiquitous access in a market where the demand for mobile Internet services has grown rapidly and predicted to generate billions of dollars in revenue.

This tutorial covers to the issues of QoS provisioning in heterogeneous networks and Internet access over future 5G wireless networks. It discusses the characteristics of the Internet, mobility and QoS provisioning in wireless, IoT and mobile IP networks. This tutorial also covers routing, security, baseline architecture of the inter-networking protocols and end to end traffic management issues.

Pascal Lorenz (lorenz@ieee.org) received his M.Sc. (1990) and Ph.D. (1994) from the University of Nancy, France. Between 1990 and 1995 he was a research engineer at WorldFIP Europe and at Alcatel-Alsthom. He is a professor at the University of Haute-Alsace, France, since 1995. His research interests include QoS, wireless networks and high-speed networks. He is the author/co-author of 3 books, 3 patents and 200 international publications in refereed journals and conferences.

He was Technical Editor of the IEEE Communications Magazine Editorial Board (2000-2006), Chair of Vertical Issues in Communication Systems Technical Committee Cluster (2008-2009), Chair of the Communications Systems Integration and Modeling Technical Committee (2003-2009), Chair of the Communications Software Technical Committee (2008-2010) and Chair of the Technical Committee on Information Infrastructure and Networking (2016-2017). He has served as Co-Program Chair of IEEE WCNC’2012 and ICC’2004, Executive Vice-Chair of ICC’2017, tutorial chair of VTC’2013 Spring and WCNC’2010, track chair of PIMRC’2012, symposium Co-Chair at Globecom 2007-2011, ICC 2008-2010, ICC’2014 and ‘2016. He has served as Co-Guest Editor for special issues of IEEE Communications Magazine, Networks Magazine, Wireless Communications Magazine, Telecommunications Systems and LNCS. He is associate Editor for International Journal of Communication Systems (IJCS-Wiley), Journal on Security and Communication Networks (SCN-Wiley) and International Journal of Business Data Communications and Networking, Journal of Network and Computer Applications (JNCA-Elsevier).

He is senior member of the IEEE, IARIA fellow and member of many international program committees. He has organized many conferences, chaired several technical sessions and gave tutorials at major international conferences. He was IEEE ComSoc Distinguished Lecturer Tour during 2013-2014.

Introduction to Julia with Applications

Ivan Slapničar, PhD

University of Split, FESB, Croatia

Tutorial is available at http://julialang.org.

“Julia is a high-level, high-performance dynamic programming language for technical computing, with syntax that is familiar to users of other technical computing environments. It provides a sophisticated compiler, distributed parallel execution, numerical accuracy, and an extensive mathematical function library. Julia’s Base library, largely written in Julia itself, also integrates mature, best-of-breed open source C and Fortran libraries for linear algebra, random number generation, signal processing, and string processing. In addition, the Julia developer community is contributing more than 1300 external packages through Julia’s built-in package manager at a rapid pace. IJulia, a collaboration between the Jupyter and Julia communities, provides a powerful browser-based graphical notebook interface to Julia. Julia programs are organized around multiple dispatch; by defining functions and overloading them for different combinations of argument types, which can also be user-defined.” (from http://julialang.org).

In this tutorial we will cover basics of Julia principles and usage and, time permitting, few advanced examples of application of numerical linear algebra methods in data mining and signal processing.

Ivan Slapničar was born on 13 July 1961. He received his BSc in 1984, his MSc in 1988 in Mathematics from the University of Zagreb, Croatia, and PhD (dr. rer. nat.) in Mathematics in 1992 from the Fernuniversität Hagen, Germany, with summa cum laude. He is Professor and Head of the Chair for Mathematics at the Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture at the University of Split. His research interests include linear algebra, numerical linear algebra and applications.

Professor Slapničar was Visiting Professor at the Utah State University in 2001/02, Visiting Researcher at TU Berlin with the FP7 People “Marie Curie” Intra-European Fellowship in 2009/10, and Fulbright-Schuman International Educator/Lecturer at MIT in 2014, where he worked closely with the Julia group. In June 2016 he taught GIAN Course “Modern Applications of Numerical Linear Algebra” at IIT Indore, India, which was entirely prepared in Julia. To date Professor Slapničar has published more than 20 journal papers in the area of opertor theory, linear algebra, numerical linear algebra and applications and was PI in several national scientific grants.

Human Safety and Medical Application of Electromagnetic Fields: Role of Computational Modeling

Akimasa Hirata, PhD

Nagoya Institute of Technology, Japan

Tutorial is available in PDF.

Computational techniques for human exposed to external electromagnetic fields have progressed significantly for human safety as public concerns have grown over the adverse health effects of environmental electromagnetic fields such as those created by power lines, mobile phones, etc. The role of the dosimetry is to relate the external field strength and induced electric field/power absorption, contributing to the rationale of the metric and limit for human protection that are set in the international standards/guidelines by IEEE and the International Commission on Non-Ionizing Radiation Protection (ICNIRP), which are mentioned by the World Health Organization. Both standards/guidelines have been revising the standards. In this tutorial, the role of the computational modeling has been explained in detailed. In addition, state-of-art computational techniques developed in safety assessment now become a powerful tool when quantifying induced electrical fields in medical application as well. Some examples of its clinical applications have also been presented.

Akimasa Hirata received the B.E. and Ph.D. degrees in communications engineering from Osaka University, Suita, Japan, in 1996 and 2000, respectively. He was a Research Fellow of the Japan Society for the Promotion of Science (JSPS Research Fellow) from 1999 to 2001, and also a Visiting Research Scientist at the University of Victoria, Canada in 2000. In 2001, he joined the Department of Communications Engineering, Osaka University as an Assistant Professor. In 2004, he joined Nagoya Institute of Technology where he is now a Full Professor. His research interests are in computational electromagnetics and thermodynamics in biological tissue, waveguide analysis, EMC and EMI, and computational techniques in electromagnetics.
Dr. Hirata is an editorial board member of Physics in Medicine and Biology, a member of the main commission and a chair of project group of International Commission on Non-Ionizing Radiation Protection (ICNIRP), and a member of Administrative Committee and a subcommittee chair of IEEE International Committee on Electromagnetic Safety. He was also an Associate Editor of IEEE Transactions on Biomedical Engineering (from 2006 to 2012). Dr. Hirata won several awards including rizes for Science and Technology (Research Category 2011, Public Understanding Promotion Category 2014) by the Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, Japan, and IEEE EMC-S Technical Achievement Award. He is a Fellow of Institute of Physics and IEEE.

Computational Electromagnetics: Applications in Electromagnetic Compatibility, Bioelectromagnetics and Magnetohydrodynamics

Dragan Poljak, PhD

University of Split, FESB, Croatia

Tutorial is available in PDF.

The presentation starts with some general aspects of computational electromagnetics and electromagnetic compatibility (EMC). The introduction outlines some well-established analytical and numerical methods.
First, a crash-course on the theory of thin wire antennas and related numerical methods for solving various integral equations in both frequency and time domain will be discussed. Applications pertaining to dipoles, Yagi-Uda arrays and logarithmic-periodic dipole antennas (LPDA) will be given. Furthermore, applications pertaining to air trafic control and ground penetrating radar (GPR) are presented. Furthermore, full wave (antenna) models for various thin wire structures, from rather simple to realistic complex geometries, will be presented. This will be followed by analysis of overhead and buried transmission lines, respectively, which will be undertaken out using both rigorous full wave models and approximate transmission line (TL) approach. Particular attention will be focused to the study of PLC (Power Line Communications) configurations and modeling of lightning channel. The transient analysis of realistic grounding systems, with particular emphasis to wind turbines, will be undertaken, as well. Then Tutorial will tackle the human exposure to non-ionizing electromagnetic fields. Low frequency, high frequency and transient exposures related to possible adverse health effects will be outlined. Some biomedical application of electromagnetic fields, with particular emphasis on transcranial magnetic stimulation (TMS) and nerve fiber stimulation, will be also covered. Furthermore some stochastic analysis methods applied to area of GPR and human exposure to electromagnetic fields will be presented.
The presentation will end up with some topics in magnetohydrodynamics pertaining to the modeling of plasma physics phenomena for the application sin thermonuclear fusion.

Dragan Poljak was born on 10 October 1965. He received his BSc in 1990, his MSc in 1994 and PhD in electrical engineering in 1996 from the University of Split, Croatia. He is the Full Professor at Department of Electronics, Faculty of electrical engineering, mechanical engineering and naval architecture at the University of Split, and he is also Adjunct Professor at Wessex Institute of Technology. His research interests include frequency and time domain computational methods in electromagnetics, particularly in the numerical modelling of wire antenna structures, and numerical modelling applied to environmental aspects of electromagnetic fields. To date Professor Poljak has published nearly 200 journal and conference papers in the area of computational electromagnetics, seven authored books and one edited book, by WIT Press, Southampton-Boston, and one book by Wiley, New Jersey. Professor Poljak is a member of IEEE, a member of the Editorial Board of the journal Engineering Analysis with Boundary Elements, and co-chairman of many WIT International Conferences. He is also editor of the WIT Press Series Advances in Electrical Engineering and Electromagnetics. In June 2004, professor Poljak was awarded by the National Prize for Science. In 2013 he was awarded by the Nikola Tesla Prize for achievements in Technical Sciences, in 2016. He received the prize for the achievements in engineering education from Croatian IEEE chapter and in 2017 he received the prize for science from the University of Split. From 2011 to 2015 professor Poljak was the Vice-dean for research at the Faculty of electrical engineering, mechanical engineering and naval architecture. In 2011 professor Poljak became a member of WIT Bord of Directors. In June 2013 professor Poljak became a member of the board of the Croatian Science Foundation.

Application of Green’s Function to Analysis of Grounding Systems Placed in Nonhomogeneous Soil

Nenad Cvetković, PhD

University of Niš, Faculty of Electronic Engineering, Serbia

Tutorial is available in PDF.

The presentation starts with general review of the grounding system importance in various technological systems like power facilities, telecommunication systems, or lightning protection system. It is followed by description of variously shaped ground non-homogeneities that may occur near grounding system and influence on them. Such non-homogeneities can be roads, vertical containers having semi-spherical bases with a lower one buried in the ground, pillar ground electrodes with concrete foundation, or large holes in the ground (e.g. ponds and small lakes) filled with water. One of the often used model of non-homogeneous ground is also that one which approximates ground with finite number of horizontal homogeneous layers.
Afterwards, corresponding procedures consider approximation of existing ground non-homogeneities with variously shaped homogeneous domains, including semi-cylindrically and semi-spherically-shaped ones, of known electromagnetic characteristics will be presented. The procedures for analysing influence of above-mentioned grounding non-homogeneities based on the usage of the quasi-stationary Green’s function and image theory will be presented. It will be followed by presentations of the procedures for deriving the Green’s functions and some specific applications.
The final part of the presentation will include presentation of published results obtained described procedure.

Nenad Cvetković was born in Niš, Serbia in 1970. He received the Dipl. ing, M.Sc. and Ph.D. degrees from the Faculty of Electronic Engineering of University of Niš in 1995, 2002 and 2009, respectively. He is an assistant professor at the Department of Theoretical Electrical Engineering, Faculty of Electronic Engineering of Niš. His research interests are numerical methods for electromagnetic field calculation, especially in transmission line and grounding systems analysis. As an author or co-author, he has published about one hundred papers in international journals or conference proceedings, one monograph dealing with grounding systems, and two textbooks. As a member of a local research teams, he was on study staying at the universities in Germany, USA and Croatia. Nenad Cvetković was a visiting lecturer at the MCAST College in Malta and member of examining committees for PhD Thesis at the Mälardalen University-Sweden, as well as at the University of Kragujevac-Serbia.
Dr Cvetković is a reviewer for the COMPEL, IEEE Transactions on Electromagnetic Compatibility, and AEŰ journals. He is a member of the IEEE Electromagnetic Compatibility Society and the IEEE Magnetics Society. From 2017, he is Chairman of the PES Conference on applied electromagnetic that is traditionally organized at the Faculty of Electronic Engineering, University of Niš, Serbia.

Finite-Difference Time-Domain: From basic principles to realistic ground penetrating radar modelling

Antonis Giannopoulos, PhD

School of Engineering, The University of Edinburgh, Edinburgh, UK

Tutorial is available in PDF.

Starting from Maxwell’s Equations the development of the finite-difference time-domain method will be presented highlighting important developments in a few key areas such are absorbing boundary conditions using perfectly matched layers, the incorporation of dispersive media, realistic modelling ground penetrating radar antennas and responses from targets in complex environments. Finally, gprMax, an Open Source software package implementing the FDTD method will be briefly presented showcasing some examples from applications relating to modelling ground penetrating radar.

Antonis Giannopoulos is a Senior Lecturer at the School of Engineering, The University of Edinburgh, Edinburgh, UK. After graduating with a degree in Geology, specialising in applied Geophysics, from the Aristotle University of Thessaloniki, Greece he pursued a DPhil in Electronics at the University of York, UK, working on ground penetrating radar (GPR). His cross-disciplinary background spans the application of geophysical methods and primarily of GPR to engineering site investigation problems and non-destructive testing of infrastructure elements to computational electromagnetics and development of efficient numerical modelling processes for the finite-difference time-domain method. His main research efforts are focused primarily on the development and application of ground penetrating radar technologies. He is the original author and lead designer of gprMax, a full wave finite-difference time-domain electromagnetic simulator for ground penetrating radar which recently has undergone a lot of rapid expansion and redevelopment to expand its capabilities. He has published over 100 papers in international journals and conference proceedings.