TUTORIAL 1: Terahertz Communications:
A Key Enabling Technology for Beyond 5G

Josep Miquel Jornet
University at Buffalo, The State University of New York, USA

Terahertz (THz)-band (0.1-10 THz) communication is envisioned as a key wireless technology of the next decade. The THz band will help overcome the spectrum scarcity problems and capacity limitations of current wireless networks, by providing an unprecedentedly large bandwidth. In addition, THz-band communication will enable a plethora of long-awaited applications, both at the nano-scale and at the macro-scale, ranging from wireless massive-core computing architectures and instantaneous data transfer among non-invasive nano-devices, to ultra-high-definition content streaming among mobile devices and wireless high-bandwidth secure communications. The objective of this course is to provide the audience with the necessary knowledge and tools to contribute to the development of wireless communication networks in the THz band. For this, the state-of-the-art technologies, the open challenges, and possible research directions in the following three aspects will be covered. First, THz-band devices will be surveyed, including THz-band transceivers, broadband antennas and dynamic antenna arrays. Second, existing THz-band channel models, including line-of-sight channel, multi-path channel and three-dimensional channel, will be described. The open research challenges of the Ultra-Massive Multiple-Input Multiple-Output (UM-MIMO) channel and the time-varying channel will be introduced. Third, novel communication mechanisms such as the pulse-based modulation, multi-wideband modulation, distance-aware resource allocation, low-sampling-rate timing acquisition, and UM-MIMO adaptive systems will be presented.

Biography: Josep M. Jornet is an Assistant Professor with the Department of Electrical Engineering at the University at Buffalo (UB), The State University of New York (SUNY). He received the B.S. in Telecommunication Engineering and the M.Sc. in Information and Communication Technologies from the Universitat Politecnica de Catalunya, Barcelona, Spain, in 2008. He received the Ph.D. degree in Electrical and Computer Engineering from the Georgia Institute of Technology (Georgia Tech), Atlanta, GA, in 2013. From September 2007 to December 2008, he was a visiting researcher at the Massachusetts Institute of Technology (MIT), Cambridge, under the MIT Sea Grant program. He was the recipient of the Oscar P. Cleaver Award for outstanding graduate students in the School of Electrical and Computer Engineering, at Georgia Tech in 2009. He also received the Broadband Wireless Networking Lab Researcher of the Year Award in 2010. In 2016 and 2017, he received the Distinguished TPC Member Award at the IEEE International Conference on Computer Communications (INFOCOM). In 2017, he received the IEEE Communications Society Young Professional Best Innovation Award, the ACM NanoCom Outstanding Milestone Award and the UB SEAS Early Career Researcher of the Year Award. Since July 2016, he is the Editor-in-Chief of the Nano Communication Networks (Elsevier) Journal. He also serves in the Steering Committee of the ACM Nanoscale Computing and Communications Conference series. He is a member of the IEEE and the ACM. His current research interests are in Terahertz-band communication networks, Nano-photonic wireless communication, Intra-body Wireless Nanosensor Networks and the Internet of Nano-Things.


TUTORIAL 2: Data Sharing in the Internet of Things Era 

Angelo Corsaro, PhD.
Chief Technology Officer ADLINK Technologies Inc.

Most of the data sharing technologies and standards existing today were optimized for either operating in a local-area network or for operating in a wide-area network. Furthermore, the design of most of these technologies did not take into account constrained devices, often battery-powered, running over low-power networks. The Internet of Things is changing all of this. Data sharing technologies are now expected to provide end-to-end abstractions that can span from extremely constrained devices to the data center. Additionally, to address the latency and throughput needs of Industrial Internet of Things applications, data sharing technologies need optimally exploit the LAN as well as the WAN peculiarities.

This tutorial will (1) introduce the requirements for data sharing in a generic IoT environment, including Consumer and Industrial IoT, (2) introduce the most relevant standards currently considered as the reference for data sharing in IoT, highlight their short-comings and explain how some of those can be overcome, and (3) report on some emerging technologies and standards to optimally address end-to-end data sharing in IoT.

Biography: Angelo Corsaro, PhD, is Chief Technology Officer (CTO) at ADLINK Technology Inc. As CTO he leads the Advanced Technology Office (ATO) and looks after corporate technology strategy and innovation. Angelo is a well-known and cited expert in the area of high performance and large scale distributed systems, IoT, Edge/Fog Computing. He is a well published author with well over 100 of publications on referred journal, conferences, workshops. Angelo has co-authored more than 10 international standards and is the co-founder and co-chair of the DDS Special Interest Group, a member of the OMG Board of Directors and a member of the ECC Technical Advisory Board.


TUTORIAL 3: Quantum Cryptography:
Principles, Implementation and Perspectives

Philippe Gallion, Télécom ParisTech, Paris, France

World communications widely involve secrecy and confidentiality. The present cryptography in communications systems and networks, such as the Internet, is manly based on software public key encryption that is only difficultto break, but not “unconditionally” secure. Given the continuous advances in algorithmic and computational power, these classical systems are condemned to follow up electronics progress by enlarging the key length, remaining them always vulnerable. Furthermore, disruptive technology such as quantum computing may appear and changes the today paradigm.

Quantum cryptography can warranty unconditional security since it is not based on algorithmic complexity, but on the quantum properties of the light emitted by the legitimate transmitter (Alice). Then, the security relies on the destructive characteristics of quantum measurement (quantum demolition) and on the impossibility to duplicate an unknown quantum state (non-cloning), making any eavesdropper (Eve) necessarily altering the quantum state and be detected by the legitimate receiver (Bob). Non-relevant for the transmitted message itself, the quantum technology offers perspective in key distribution (QKD) on the fiber optic and free space optical channels. Heisenberg uncertainties (related to non commutation of the operators associated to 2 quadratures of optical field), quantum super correlation (entanglement) and single photon operation are the usual ways to take benefit of the quantum nature of the light. Each of them requires an appropriate protocol.

Waiting for reliable single photon transmitter (photon gun) a high quality laser beam (i.e. a coherent state), fainted down to the quantum level, is widely use. An operation at the standard optical communications wavelength, for which low cost components, devices and fibers are available, is mandatory for an easy integration into the present wavelength division multiplexed (WDM) fiber networks. The today efficiency, speed, dark count and price of the photon counters make that the implementation of the quantum receiver is a key issue. As coherent techniques are now widely used in long haul optical systems, a particular attention will be paid to coherent quantum receivers for which the today interest is includes also the future optical communications systems beyond Earth orbits, operating with very a low photon number signals.

Unconditional security of the physical layer is only a step toward in a holistic end-to-end security approach, facing the real World attacks and including photonics, electronics and software, Security is a conservative World that cannot afford any technical risk when including disruptive technologies and a progressive infiltration of quantum security in classically secured systems is called for.

 Biography: Philippe Gallion, M.Sc., PhD and “Docteur es Science” is now emeritus Professor at Télécom ParisTech, formerly “Ecole Nationale Supérieure des Télécommunications” where he was the Chairman of the Communications and Electronics Department. He has also lectured at the University Pierre and Marie Curie (ParisVI), at several French “Grandes Ecoles” and several foreign Universities. His research has brought pioneering contributions to semiconductor lasers, optical amplifiers, optoelectronic devices, coherent optical communication, optical communication systems and networks including quantum communications and cryptography. He is author of several textbooks and book chapters and more than 300 international publications and communications. Philippe Gallion is a Member of the Optical Society of America and a Life Member of the Institute of Electrical and Electronics Engineers (IEEE) serving as Chairman for the French Chapter of the Photonics Society.

A Paradigm Shift for Cellular Communications 

Jakob Hoydis, Nokia Bell Labs-France, and Luca Sanguinetti, University of Pisa-Italy

Massive MIMO stands as one of the most attractive sub-­‐6 GHz physical-­‐layer technology for future wireless access, thanks to its excellent spectral efficiency and superior energy efficiency. In recent years, Massive MIMO has gone from being a mind-­‐blowing theoretical concept to one of the most promising 5G-­‐enabling technologies. Everybody seems to talk about Massive MIMO, but do they all mean the same thing? What is the canonical definition of Massive MIMO? What are the differences from the classical multi-­‐user MIMO technology from the nineties? What are the key characteristics of the transmission protocol? How can Massive MIMO be deployed? Are there any widespread misunderstandings?

This tutorial provides answers to all of these questions and other doubts that the attendees might have. We begin by covering the main motivation and properties of Massive MIMO in depth. Next, we describe basic communication theoretic results that are useful to quantify the fundamental gains, behaviors, and limits of the technology. The rest of the tutorial provides a survey of the state-­‐of-­‐the-­‐art regarding spectral efficiency, practical deployment, and energy efficient network design.

Biography: Jakob Hoydis is a member of technical staff at Nokia Bell Labs, France. Previous to this position he was co-‐founder and CTO of the social network SPRAED and worked for Alcatel-­‐Lucent Bell Labs in Stuttgart, Germany. He received the diploma degree (Dipl.‐Ing.) in electrical engineering and information  technology  from RWTH Aachen  University, Germany, and the Ph.D. degree from Supélec, Gif-­‐sur-­‐Yvette, France, in 2008 and 2012, respectively.  His research interests are in the areas of machine learning, cloud computing, SDR, large random matrix theory, information theory, signal processing and their applications to wireless communications. He is recipient of the 2012 Publication Prize of the Supélec Foundation, the 2013 VDE ITG Förderpreis, and the 2015 Leonard G. Abraham Prize of the IEEE COMSOC. He received the WCNC’2014 best paper award and has been nominated as an Exemplary Reviewer 2012 for the IEEE Communication letters.

Biography: Dr. L. Sanguinetti is an Assistant Professor in the Dipartimento di Ingegneria dell’Informazione of the University of Pisa. He received the Telecommunications Engineer degree (cum laude) and the Ph.D. degree in information engineering from the University of Pisa, Italy, in 2002 and 2005,  respectively. In 2004, he was a visiting Ph.D. student at the  German Aerospace Center (DLR), Oberpfaffenhofen, Germany. During the period June 2007 -­‐ 2008, he was a postdoctoral associate in the Department of Electrical Engineering at Princeton. Since July 2013, he is also with CentraleSupelec, Paris, France. He is serving as an Associate Editor for IEEE Trans. Wireless Commun. and IEEE Signal Process. Lett. He is the Lead Guest Associate Editor for IEEE JSAC -­‐ Game Theory for Networks. From June 2015 to June 2016, he was in the editorial board of IEEE JSAC -­‐ Series on Green Commun. and Networking. Dr. Sanguinetti served as Exhibit Chair of ICASSP14 and as the general co-‐chair of the 2016 Tyrrhenian Workshop on 5G&Beyond. His expertise and general interests span the areas of communications and signal processing with special emphasis on multiuser MIMO, game theory and random matrix theory for wireless communications. He was the co‐recipient of 2 best paper awards: IEEE Wireless Commun. and Networking Conference (WCNC) 2013 and IEEE Wireless Commun. and Networking Conference (WCNC) 2014. He was also the recipient of the FP7 Marie Curie IEF 2013 “Dense deployments for green cellular networks”. Dr. Sanguinetti is a Senior IEEE Member.

TUTORIAL 5: Wireless Radio Access for 5G and Beyond

Huseyin Arslan, University of South Florida (USA) & Istanbul Medipol University (Turkey)

Today’s wireless services and systems have come a long way since the rollout of the conventional voice-centric cellular systems.  The demand for wireless access in voice and multi-media applications has increased tremendously. In addition to these, new application classes like extreme mobile broadband communication, ultra reliable and low latency communications, massive machine type communications, and Internet of Things have gained significant interest recently for 5G. The trend on the variety and the number of mobile devices along with the mobile applications will certainly continue beyond 5G, creating a wide range of technical challenges such as cost, power efficiency, spectrum efficiency, extreme reliability, low latency, robustness against diverse channel conditions, cooperative networking capability and coexistence, dynamic and flexible utilization of wireless spectrum. In order to address these technical challenges, 5G waveforms and radio access technologies (RATs) should be much more flexible. The current 4G systems rely on the orthogonal frequency multiple access (OFDM) waveform, which is not capable of supporting the diverse applications that 5G and beyond will offer. This is because the traffic generated by 5G and beyond is expected to have radically different characteristics and requirements when compared to current wireless technology. For 5G to succeed, numerous waveform alternatives have been explored to best meet its various technical requirements. However, none of the alternatives were able to address all the requirements at the same time.

During the standardization of 5G, one thing has become certain: there is no single enabling technology that can achieve all of the applications being promised by 5G networking. This will be even more pronounced beyond 5G. For this purpose, the concept of using multiple OFDM numerologies, i.e., different parameterization of OFDM based subframes, within the same frame has been proposed in 3GPP discussions for 5G. This concept will likely meet the current expectations in multiple service requirements to some extent. However, since it is almost obvious that quantity of wireless devices, applications, and heterogeneity of user requirements will keep increasing towards the next decade(s), the sufficiency of the aforementioned flexibility level remains quite disputable considering future expectations. Therefore, novel RATs facilitating much more flexibility are needed to address the aforementioned technical problems.

In this tutorial, we will discuss the potential directions to achieve further flexibility in RATs beyond 5G. In this context, a framework for developing flexible waveform, numerology, and frame design strategies will be discussed along with sample methods in this direction. We will also discuss their potential role to handle various issues in the upper system layers.

Biography: Dr. Arslan (IEEE Fellow) has received his BS degree from Middle East Technical University (METU), Ankara, Turkey in 1992; MS and Ph.D. degrees in 1994 and 1998 from Southern Methodist University (SMU), Dallas, TX. USA. From January 1998 to August 2002, he was with the research group of Ericsson Inc., NC, USA, where he was involved with several projects related to 2G and 3G wireless communication systems. Since August 2002, he has been with the Electrical Engineering Dept. of University of South Florida, Tampa, FL, USA, where he is a Professor. In December 2013, he joined Istanbul Medipol University to found the Engineering College, where he has worked as the Dean of the School of Engineering and Natural Sciences. He has also served as the director of the Graduate School of Engineering and Natural Sciences at the same university. In addition, he has worked as a part-time consultant for various companies and institutions including Anritsu Company, Savronik Inc., and The Scientific and Technological Research Council of Turkey. Dr. Arslan’s research interests are related to advanced signal processing techniques at the physical and medium access layers, with cross-layer design for networking adaptivity and Quality of Service (QoS) control. He is interested in many forms of wireless technologies including cellular radio, wireless PAN/LAN/MANs, fixed wireless access, aeronautical networks, underwater networks, in vivo networks, and wireless sensors networks. His current research interests are on 5G and beyond, physical layer security, interference management (avoidance, awareness, and cancellation), cognitive radio, small cells, powerline communications, smart grid, UWB, multi-carrier wireless technologies, dynamic spectrum access, co-existence issues on heterogeneous networks, aeronautical (High Altitude Platform) communications, in vivo channel modeling and system design, and underwater acoustic communications. He has served as technical program committee chair, technical program committee member, session and symposium organizer, and workshop chair in several IEEE conferences. He is currently a member of the editorial board for the IEEE Surveys and Tutorials and the Sensors Journal. He has also served as a member of the editorial board for the IEEE Transactions on Communications, the IEEE Transactions on Cognitive Communications and Networking (TCCN), the Elsevier Physical Communication Journal, the Hindawi Journal of Electrical and Computer Engineering, and Wiley Wireless Communication and Mobile Computing Journal.

TUTORIAL 6: Low Power Wide Area Networks for the Internet of Things: Framework, Optimization, and Challenges of LoRaWAN and NB-IoT

Samer Lahoud and Melhem El Helou, ESIB, Saint Joseph University of Beirut, Lebanon.

Low-Power Wide Area Networks (LPWAN) have recently gained considerable attention in the Internet of Things (IoT). The key objective of these wireless technologies is to connect low-power devices over very large areas, with low data rates. LPWANs are promising for various emerging IoT applications, complementing the traditional cellular and short-range technologies.

In this tutorial, we present the recent advances of LPWAN technologies with focus on LoRaWAN and NB-IoT. We analyse the link level and system level design aspects. We further focus on link budget analysis and radio network dimensioning for both LoRaWAN and NB-IoT. Precisely, we present best practices in the network design and deployment of these technologies. Acquiring such best practices is of paramount importance for the engineering and optimization of LPWANs. We also provide a comparative scientific analysis of the performance of LoRaWAN and NB-IoT in terms of coverage and capacity.

Finally, we cover the research directions and scientific challenges in these technologies. Particularly, we present research directions for radio resource management in both LoRaWAN and NB-IoT.

Biography: Samer Lahoud is an Associate Professor at the Saint-Joseph University of Beirut where he lectures computer networking courses at the Faculty of engineering (ESIB). His research activities focus on routing and resource allocation algorithms for wired and wireless communication networks. He has co-authored more than 80 papers published in international journals and conference proceedings. Mr. Lahoud received the Ph.D. degree in communication networks from Telecom Bretagne, Rennes, in 2006. After his Ph.D. degree, he spent one year at Alcatel-Lucent Bell Labs Europe. From 2007 to 2016, he was with the University of Rennes 1 and with IRISA Rennes as an Associate Professor.

Biography: Melhem El Helou received the engineer’s degree and master’s degree in telecommunications and networking engineering from the Ecole Supérieure d’Ingénieurs de Beyrouth (ESIB), Faculty of Engineering at the Saint Joseph University of Beirut, Beirut, Lebanon, in 2009 and 2010, respectively and the Ph.D. degree in computer and telecommunications engineering from IRISA Research Institute, University of Rennes 1, Rennes, France and Saint Joseph University of Beirut, in 2014. He joined ESIB in September 2013 where he is currently an Assistant Professor (fr: Maître de conférences). His research interests include wireless networks, radio and energy resource management, Internet of Things, and quality of service.