Monday September 3, 09.30 – Fairness and privacy in networks

Christos Dimitrakakis, Chalmers

We will discuss issues related to fairness and privacy of individual users in digital communications. These are increasingly important due to the use of adaptive data-dependent methods in digital networks and related services. We will in particular focus on achieving fair and private adaptive resource allocation and pricing schemes.

Biography :
Christos Dimitrakakis is interested in adaptive learning problems such as reinforcement learning (mainly within the Bayesian paradigm) as well as on the social impact of machine learning and in particular privacy, fairness, safety and human-AI collaboration. He obtained his PhD from EPFL in 2006 with the topic “Esembles from Sequence Learning” where he pioneered the use of ensemble methods for exploration in reinforcement learning. He is currently working as a senior researcher at Chalmers university of technology, and an associate professor at the university of Oslo, while on leave from his position as an associate professor at the university of Lille.


Monday September 3, 10:40 – On the Role of Data for Self-Driving Vehicles: Research and Experience from Chalmers Vehicle Laboratory Rever

Christian Berger, University of Gothenburg

This talk will provide an overview about the research conducted at Chalmers Vehicle Laboratory “Revere” in Gothenburg, Sweden – a unique research environment housing a Volvo FH truck, two Volvo XC90 SUVs, an electric racing car, and a swarm of 3D-printed 1/14-scale miniature vehicles. All platforms are powered by OpenDLV (Open Driverless Vehicle), an open source environment of lean microservices integrating the results and experience of research in the area of self-driving vehicles from more than a decade. The presentation will give examples from ongoing research and highlight the role and specific challenges of data in the area of self-driving vehicles.

Dr. Christian Berger is Associate Professor at the Department of Computer Science and Engineering at University of Gothenburg, Sweden and received his Ph.D. degree from RWTH Aachen University, Germany in 2010. He coordinated the project for the vehicle “Caroline”, which participated in the world’s first urban robot race 2007 DARPA Urban Challenge Final. He co-led the Chalmers Truck Team during the 2016 Grand Cooperative Driving Challenge (GCDC), and is one of the two leading architects behind OpenDLV (Open Driverless Vehicle). His research expertise is on architecting complex and distributed realtime software systems, micro-services for embedded systems and cyber-physical systems, and continuous integration/deployment/experimentation.


Monday September 3, 13:20 – 5G in the next 5 years, when, why and how?

Bengt Nordström, CEO Northstream

Currently the mobile industry is preparing for the arrival of 5G. It will probably be the first mobile standard to arrive on or even ahead of schedule. Although many operators are experiencing flat or declining revenue trends, they will need to invest in 5G networks to meet growing demands, for coverage, capacity and throughput. Beyond improving mobile broadband capabilities there are also expectations that 5G can open up new revenue streams for operators such as FWA and Industrial IoT.

In this presentation Northstream will provide an independent and objective view on the deployment of 5G over the next 5-year period. It will endeavor to answer the questions of when and where 5G will be deployed, what is driving the need for 5G as well of how different deployment scenarios will look like. The presentation will be based on Northstream findings from research and assignments across the mobile value chain.

Bengt Nordström co-founded Northstream in 1998 and is since then the CEO of the company. He has previously held the position as CTO and Executive Director of Smartone in Hong Kong. Other management positions include Ericsson, Comviq and Netcom consultants. Bengt has also held a position in the Executive Committee of the GSM Association as well as chairing the GSM Association Asia Pacific Interest Group. Bengt is an acknowledged telecom industry thought leader that is frequently invited as speaker and moderator in conferences and strategy workshops.


Monday September 3, 14:20 – Wireless Network Slicing in 5G: A Communication-Theoretic Perspective

Petar Popovski, Aalborg University

The grand objective of 5G wireless technology is to support services with vastly heterogeneous requirements. Network slicing, in which each service operates within an exclusive slice of allocated resources, is seen as a way to cope with this heterogeneity. However, the shared nature of the wireless channel allows non-orthogonal slicing, where services us overlapping slices of resources at the cost of interference. This talk presents the performance of orthogonal and non-orthogonal slicing of radio resources for the provisioning of the three generic services of 5G: enhanced mobile broadband (eMBB), massive machine-type communications (mMTC), and ultra-reliable low-latency communications (URLLC). We consider uplink communications from a set of eMBB, mMTC and URLLC devices to a common base station. A communication-theoretic model is proposed that accounts for the heterogeneous requirements and characteristics of the three services. For non-orthogonal slicing, different decoding architectures are considered, such as puncturing and successive interference cancellation. The concept of reliability diversity is introduced here as a design principle that takes advantage of the vastly different reliability requirements across the services. This study reveals that non-orthogonal slicing can lead, in some regimes, to significant gains in terms of performance trade-offs among the three generic services compared to orthogonal slicing.

Petar Popovski is a professor at Aalborg University, Denmark. He received his Dipl.-Ing./ Mag.-Ing. in communication engineering from Sts. Cyril and Methodius University in Skopje, R. of Macedonia, and his Ph.D. from Aalborg University. He is a Fellow of IEEE. He received an ERC Consolidator Grant (2015), the Danish Elite Researcher award (2016), IEEE Fred W. Ellersick prize (2016) and IEEE Stephen O. Rice prize (2018). He is currently an Area Editor for IEEE Transactions on Wireless Communications and a Steering Board member of IEEE SmartGridComm. He co-founded RESEIWE A/S, a company delivering ultra-reliable wireless solutions. His research interests are in wireless communications/networks and communication theory.


Monday September 3, 15:30 – Open Air-Interface Evolution for 5G & beyond Experimentation

Raymond Knopp, EURECOM

In this talk we give an overview of the activities of the OpenAirInterface Software Alliance (OSA) in relation to 5G architecture and in particular 5G NR. We start with an overview of the collaboration model within the OSA which allows for fruitful exchanges between academia and industry in the form of a non-classical open-source software community. The main feature of this community being to preserve the intellectual property policies of the 3GPP standardization process even when strictly open-source radio-access and core network software components are implemented. From a technical standpoint, we provide an overview of functional splitting possibilities and the deployment of OAI software entities on commodity computing equipment. Finally we provide some details of the low-cost deployment of a combined 4G and 5G-NR experimental network based on OAI in Sophia Antipolis.

Raymond Knopp is professor in the Communication Systems Department at EURECOM. He is also currently a part-time visiting professor at the Beijing University of Posts and Telecommunications under the Discipline Innovative Engineering Plan. He received the B.Eng. (Honours) and the M.Eng. degrees in Electrical Engineering from McGill University, Montreal, Canada, in 1992 and 1993, respectively. From 1993-1997 he was a research assistant in the Mobile Communications Department at EURECOM working towards the PhD degree in Communication Systems from the Swiss Federal Institute of Technology (EPFL), Lausanne. From 1997-2000 he was a research associate in the Mobile Communications Laboratory (LCM) of the Communication Systems Department of EPFL. His current research and teaching interests are in the area of digital communications, software radio architectures, and implementation aspects of signal processing systems and real-time wireless networking protocols. He has a proven track record in managing both fundamental and experimental research projects at an international level and is also General Secretary of the open-source academia-industry radio platform initiative which aims to bridge the gap between cutting-edge theoretical advances in wireless communications and practical designs.


Monday September 3, 16:10 – Radio Environment Maps for dynamic spectrum sharing

Paweł Kryszkiewicz, Poznan University of Technology

Spectrum occupancy measurement campaigns carried more than a decade ago revealed high licensed spectrum underutilization. Although a cognitive radio technology has been claimed to increase spectral efficiency by utilizing spectrum “white” spaces, its performance has been limited by imperfections of spectrum sensing and inter-device coordination. Currently, solutions utilizing Radio Environment Maps, being a specialized databases storing and processing information required for spectrum management, are gaining recognition and popularity.
This presentation will show overview of REM-based solutions proposed in standards and international projects. Next, an example of REM utilization for indoor-outdoor spectrum sharing will be shown. Finally, REM-based setup to protect a real network will be presented.

Paweł Kryszkiewicz is an Assistant Professor with the Chair of Wireless Communications, Poznan University of Technology (PUT). He received the M.Sc. (Hons.) degree and the Ph.D. (Hons.) degree in telecommunications from PUT in 2010 and 2015, respectively. He was involved in a number of national and international projects (including EU FP7 and EU H2020). His main research interest is Dynamic Spectrum Access including spectrum sensing, creation and operation of Radio Environment Maps, interference management and multicarrier PHY design for reduced out-of-band emission and increased energy efficiency. He has published more than 40 academic papers in international peer-reviewed conferences and journals. He co-authored a book entitled “Advanced Multicarrier Technologies for Future Radio Communication; 5G and Beyond”, 2017, Wiley.


Monday September 3, 16:50 – Gigabit Connectivity with mm-Wave Networks: Opportunities and Challenges

Marina Petrova, KTH

Abstract: Although multi-Gbps links have been shown feasible, the network wide properties of mmW networks under realistic conditions are still poorly understood. Current coverage and capacity estimates are solely based on simple propagation and blockage models, and do not take time dynamics such as mobility of users or obstacles into account. We argue that addressing these issues by capturing the exact interactions of mmW signals with the real environment is crucial for ensuring seamless and robust multi-user connectivity. In this talk we will discuss concepts that use situation awareness to significantly enhance the efficiency, robustness, and viability of mmW networks. We believe that new approaches that use the localization and tracking properties of the mm-waves, in combination with machine learning could enable efficient resource allocation schemes such as beamsteering, multiple access and handover schemes.

Marina Petrova is an associate professor in wireless communication in the School of Electrical Engineering and Computer Science at KTH Royal Institute of Technology, Sweden. Her research focuses on system-level studies of future wireless systems, self-organizing networks, cognitive communication and mm-wave networking. Dr. Petrova holds a degree in engineering and telecommunications from Ss. Cyril and Methodius University, Skopje and a Ph.D. from RWTH Aachen University, Germany. She was a TPC co-Chair of DySPAN 2011 and a TPC co-Chair of SRIF14 in conjunction with SIGCOMM. She is a co-author of the paper that got the Best paper award at IEEE DySPAN 2017. She served as an Editor for the IEEE Wireless Communication Letters and the IEEE Transactions on Mobile Computing from 2016 to 2017.


Tuesday September 4, 08:40 – When a DLT is Secure, Fair and Fast, What Will You Build?

Ken Anderson, Swirlds, US

Hashgraph provides a new form of consensus, which does not require compute-heavy proof-of-work. Hashgraph is lightning fast, secure, and fair. Speeds greater than 50,000x blockchain. Technology and governance that ensure security, fairness, and stability. When you have speed, security, and transactions that cost fractions of a penny, what’s possible? This session will lay out details of the hashgraph platform, share use-cases for what companies both big and small are building on top of hashgraph, and help you realize what’s possible on top of the hashgraph platform. With speed, security and fairness, what will you build?

Ken Andersson is the Founder and Chief Executive Officer of LaunchBadge, a software development and maintenance firm that specializes in business management, software engineering, and information architecture. He is also the Chief Technology Officer of Mingo, a gateway application for non-cryptocurrency users to join the cryptocurrency community, where he handles strategic technology relationships and high-level system architecture.
Previously, Ken was the President and Chief Operating Officer of Concordus Applications, where he was the lead contributor to the TM Forum’s REST API design guidelines, which is now used throughout the multi-trillion dollar global telecom industry. He was also a Senior Project Manager at Tagachi and consulted at Watermark Studios. Ken graduated with a Bachelor’s degree in Business Administration in Management Information Systems from California State University and was an Intelligence Sergeant in the United States Army.


Tuesday September 4, 09:20 – Software techniques for performance-portable heterogeneous computing

Christoph Kessler, Professor, Linköping University

After 50 years, the steady exponential growth rate in CMOS chip density postulated by Moore’s Law finally shows signs of slowing down. With radically different hardware technologies not ready yet to take over, this implies that multi-core, many-core and heterogeneous computer architectures are here to stay for the foreseeable future. It also implies that, in future, a larger share of ICT performance improvement must come from the software side. For best-effort resource utilization, programmers need frameworks and tools that help e.g. to coordinate computations using many cores, exploit available accelerators such as GPUs where appropriate, and prepare programs to automatically adapt to new execution environments and runtime contexts.
This presentation makes the point that a high level of programming abstraction and of portability is not necessarily a hinder for resource-aware heterogeneous computing, but can even support it. We follow an approach of composing computations from software building blocks that each may offer multiple implementation variants, especially also variants for the different types of execution units in heterogeneous systems. We show that such a multi-variant compositional approach provides a powerful means of optimizing program execution flow automatically, which leads to better performance-portability of programs. We give examples of some recent multi-variant programming frameworks for high-level, portable programming of heterogeneous parallel systems (especially, CPU-GPU-based systems), and present solutions to performance modeling and optimization problems to be addressed for efficient execution on such systems.

Christoph Kessler is a professor for Computer Science at Linköping University, Sweden, where he leads the Programming Environment Laboratory’s research group on compiler technology and parallel computing. He received a PhD degree in Computer Science in 1994 from the University of Saarbrücken, Germany, and a Habilitation degree in 2001 from the University of Trier, Germany. In 2001 he joined Linköping University, Sweden, as associate professor at the programming environments lab (PELAB) of the computer science department (IDA), and received the docent degree at Linköping University in 2002. In 2007 he was appointed full professor at Linköping University. Since 2015 he also serves as the head of the division for Software and Systems (SaS) at the department. His research interests include parallel programming, compiler technology, code generation, optimization algorithms, and software composition. He has published two books, several book chapters and more than 100 scientific papers in international journals and conferences.


Tuesday September 4, 10:30 – Integrated phase-change photonics for memory and computing

David Wright, University of Exeter

Chalcogenide-based phase-change materials, such as the ternary alloy Ge2Sb2Te5 (or GST for short), are well-known for their use in non-volatile memory applications. They have been used for many years (since the 1980s) for re-writable optical disk applications, and more recently for electrical memories (the 3D-xpoint memory announced by Intel and Micron in 2016 is phase-change based). However, with the dawn of the so-called silicon photonics revolution, in which chip-to-chip and even on-chip signals can be routed optically instead of electrically, the question naturally arises as to whether phase-change materials can be used to deliver a new generation of optical storage technologies – not one based around mechanically rotating disks, but one compatible with, and able to take advantage of, the ever-increasing capabilities of integrated photonic systems. Here we show that this is indeed possible, by embedding phase-change cells into standard integrated photonic devices and circuits (waveguides, resonators etc.). In particular we show that both binary and multilevel integrated phase-change photonic memories can be provided, along with a wavelength-division multiplexed capability. Since a multi-level memory facility can also be used to provide arithmetic, logic and neuromorphic (i.e. brain-like) processing capabilities, our approach can also be extended into these areas, as we demonstrate.

David Wright is professor of Electronic and Computer Engineering, head of Nano Engineering Science and Technology Group & leader Functional Materials Research Theme at the Department of Engineering, University of Exeter. David obtained a B.Sc. with first class honours in Physics in 1978 from Imperial College of Science and Technology, London. After a spell working as a Process Engineer for Philips Electronics, he returned to academia obtaining a Ph.D in Perpendicular Magnetic Recording from Manchester in 1985. He took up the Chair in Electronic and Computer Engineering at Exeter in 1999, being formerly a Reader in Data Storage at the Department of Computer Science at the University of Manchester. Professor Wright’s research centres on the design and development of future generation, non-volatile, memory and neuromorphic technologies. Professor Wright is also heavily involved in the development of research strategy, at the UK, European and international level. He led the UK Government (DTI) funded Data Storage Network, led the EU’s Special Strategic Action on memory technology, was part of the team that carried out a strategic review of the EU’s flagship FP7 nanoelectronics programmes – the ENIAC & ARETMIS JTIs that account for over €3 billion of EU spending, and he is a lead contributor on memory technology to the International Electronics Manufacturing Initiative ( David currently leads the €4M H2020 project Fun-COMP, working with IBM, Thales, IMEC and the Universities of Oxford and Muenster to develop next-generation integrated photonic computing. He is also Co-Director of Exeter’s £12M EPSRC Centre for Doctoral Training in Metamaterials, and a partner in two EPSRC Future Manufacturing projects, with a total value of over £5M, developing chalcogenide phase-change materials and devices. He is also funded by the US Naval Research Laboratories and numerous UK and international companies.


Tuesday September 4, 11:10 – Silicon Heterogeneity in the Cloud

Babak Falsafi, EPFL

Cloud providers are building infrastructure at unprecedented speeds. We have witnessed the emergence of data-centric information technology in almost every aspect of our life from commerce, healthcare, entertainment, governance to scientific discovery. The demand for processing, communicating and storing data has grown faster than conventional growth in digital platforms. Meanwhile the conventional silicon technologies we have relied on for the past several decades leading to the exponential growth in IT have slowed down. In light of this increase in demand on data-centric IT and the diminishing returns in platform scalability, our future increasingly relies on emerging technologies that introduce heterogeneity in both logic and memory.
In this talk, I will motivate the grand challenges in scaling digital platforms and data-centric technologies, then present opportunities for pushing the envelope on server architecture in the post-Moore era.

Babak Falsafi, is a Professor in the School of Computer and Communication Sciences and the founding director of the EcoCloud research center at EPFL. He has made numerous contributions to computer system design and evaluation including multiprocessor architecture for the WildCat/WildFire severs by Sun Microsystems (now Oracle), memory prefetching technologies in IBM BlueGene and ARM cores, and server evaluation methodologies used by AMD, HPE and Google PerfKit. His recent work on workload-optimized server processors lays the foundation for Cavium ThunderX. He is a fellow of ACM and IEEE.


Tuesday September 4, 11:50 – Machine Learning at the Speed of Light

Igor Carron, LightOn

With the advent of the data tsunami enabled by cheap sensors, there is a pressing need to make sense of rich data in a streaming manner i.e. with either limited computing power and/or memory. In this talk we will present two different algorithms in supervised and unsupervised machine learning that are sped up or scaled up thanks to the use of optically generated random features. In the case of transfer learning, we will show that the repurposing of a faster deep learning architecture by using optical computing. In the second case, we will show that the combination of a faster algorithm leveraged with optical random projections can become orders of magnitude faster than usual non-parametric methods for a given accuracy.

Igor Carron holds a Ph.D in Nuclear Engineering from Texas A&M University. Igor has held different positions in the business development and the management of technical teams of engineering projects. He is also the co-organizer of the Paris Machine Learning meetup, one of the largest Data Science meetup in the world. Igor also writes a technical blog with a focus on algorithms, data and sensors.


Tuesday September 4, 14:00 – Artificial Dielectric Layers: the End of Surface Waves

Andrea Neto, TU Delft

High-speed wireless communication and automotive radars are two applications with huge social and market potentials that can be revolutionized by the development of high frequency (sub-terahertz) technology. Unprecedented communication speeds and image resolutions are needed for these applications, and such requirements can be fulfilled only by shifting the operation to higher frequencies. However, technological limitations need to be overcome in order to exploit the full potential of sub-terahertz technology, such as: low-cost sources in combination with high power levels. Despite the recent advances in low-cost integrated circuits, the poor performance of onchip antennas is nowadays the major bottleneck in converting the electrical signals into radiated ones (off-chip). For decades the problem of “surface waves” has prevented the efficient use of radiators on chip. The state-of-the-art approach, used to increase the emitting performance of on-chip antennas, consists of placing artificial dielectric layers (ADLs) on top of the radiating element. This breakthrough concept was introduced in the framework of the ERC AAATSI project from the presenter. It was demonstrated that the antenna tends to predominantly radiate towards such add-on engineered dielectric material. The electromagnetic properties of the ADLs can be tailored such to reduce strong reflection at the top surface of the ADL and consequently, avoid surface-wave losses.

Andrea Neto received the Laurea degree in electronic engineering from the University of Florence, Florence, Italy, in 1994, and the Ph.D. degree in electromagnetics from the University of Siena, Siena, Italy, in 2000. Part of his Ph.D. degree was developed at the European Space Agency Research and Technology Center, where he was involved in the antenna section for over two years. From 2000 to 2001, he was a Post-Doctoral Researcher with the Submillimeter Wave Advanced Technology Group, California Institute of Technology. From 2002 to 2010, he was a Senior Antenna Scientist with TNO Defence, Security, and Safety Institute In 2010, he joined the Electrical Engineering, Mathematics and Computer Science Faculty, Delft University of Technology, Delft, The Netherlands, as a Full Professor of applied electromagnetism, where he formed and led the THz Sensing Group. His current research interests include the analysis and design of antennas, with emphasis on arrays, dielectric lens antennas, wideband antennas, electromagnetic bandgap structures, and terahertz antennas. He was a co-recipient of the H. A. Wheeler Award for the Best Applications Paper of the year 2008 in the IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. He is a member of the Technical Board of the European School of Antennas and an Organizer of the course on Antenna Imaging Techniques. He served as an Associate Editor of the IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION (2008-2013), IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS (2005-2013) and IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY. In 2011, he was awarded the European Research Council Starting Grant to perform research on Advanced Antenna Architectures for THz Sensing Systems.


Tuesday September 4, 14:40 – Smart versus Dumb Signal Processing for MMIMO and 5G

Emil Björnsson, Linköping University

With the advent of Massive MIMO (MMIMO), we can finally exploit the spatial domain for more efficient communications and multiplexing. MMIMO is a theoretically very powerful technology, but with great power comes great responsibility for the engineers that implement the system. The signal processing used for channel estimation, multiuser detection in the uplink, and precoding in the downlink must be implemented in the right way, otherwise, we will not achieve the theoretical gains in practice. Dumb methods such as maximum ratio processing and eigenbeamforming have received a disproportionate attention by the community, probably because they are easy to analyze and implement. Moreover, semi-smart zero-forcing methods that work well in single-cell scenarios are also commonly applied in multi-cell scenarios, where they are far from optimal. In this presentation, I will explain what characterizes a smart signal processing design for MMIMO and how the spatial domain and spatial channel correlation ought to be utilized for interference suppression in 5G.

Emil Björnson received the M.S. degree in Engineering Mathematics from Lund University, Sweden, in 2007. He received the Ph.D. degree in Telecommunications from KTH Royal Institute of Technology, Sweden, in 2011. From 2012 to mid 2014, he was a joint postdoc at the Alcatel-Lucent Chair on Flexible Radio, SUPELEC, France, and at KTH. He joined Linköping University, Sweden, in 2014 and is currently Associate Professor and Docent at the Division of Communication Systems.
He performs research on multi-antenna communications, Massive MIMO, radio resource allocation, energy-efficient communications, and network design. He is on the editorial board of the IEEE Transactions on Communications (since 2017) and the IEEE Transactions on Green Communications and Networking (since 2016). He is the first author of the textbooks “Massive MIMO Networks: Spectral, Energy, and Hardware Efficiency” (2017) and “Optimal Resource Allocation in Coordinated Multi-Cell Systems” from 2013. He is dedicated to reproducible research and has made a large amount of simulation code publicly available.
Dr. Björnson has performed MIMO research for more than ten years and has filed more than ten related patent applications. He received the 2018 Marconi Prize Paper Award in Wireless Communications, the 2016 Best PhD Award from EURASIP, the 2015 Ingvar Carlsson Award, and the 2014 Outstanding Young Researcher Award from IEEE ComSoc EMEA. He also co-authored papers that received best paper awards at the conferences WCSP 2017, IEEE ICC 2015, IEEE WCNC 2014, IEEE SAM 2014, IEEE CAMSAP 2011, and WCSP 2009.


Tuesday September 4, 15:50 – Channel Hardening in Massive MIMO – A Measurement Based Analysis

Fredrik Tufvesson, Lund University

Wireless-controlled robots, cars and other critical applications are in need of technologies that offer high reliability and low latency. Massive MIMO, Multiple-Input Multiple-Output, is a key technology for the upcoming 5G systems and is one part of the solution to increase the reliability. More specifically, when increasing the number of base station antennas in a massive MIMO systems the channel variations decrease and the so-called channel hardening effect appears, which makes the channel seem more deterministic.a
In this talk we discuss we discuss channel hardening effects based on indoor channel measurements, and present practical implications and insights derived from the measurements.

Fredrik Tufvesson received his Ph.D. in 2000 from Lund University in Sweden. After two years at a startup company, he joined the department of Electrical and Information Technology at Lund University, where he is now professor of radio systems. His main research interests is the interplay between the radio channel and the rest of the communication system with various applications in 5G systems such as massive MIMO, mm wave communication, vehicular communication and radio based positioning.
Fredrik has authored around 80 journal papers and 140 conference papers, he is fellow of the IEEE and recently he got the Neal Shepherd Memorial Award for the best propagation paper in IEEE Transactions on Vehicular Technology and the IEEE Communications Society best tutorial paper award.


Tuesday September 4, 16:30 – Antenna system architectures for mmwaves

Lionel Rudant, CEA/LETI

The rapid growth of mobile data traffic and the use of smartphone or others connected objects have recently drawn increased attention to the large amount of underutilized millimetre wave (mmWave) frequency bands (30 – 300 GHz) as a potential solution to achieve tens or hundreds of times more capacity compared to the current cellular networks. In this scenario, 5G wireless heterogeneous networks will be probably composed of medium-range macro-cells at sub-3 GHz bands, small-cells at sub-6 GHz, and small-cells at mmWave bands (28, 38, 60 GHz or E band 71 – 76 and 81 – 86 GHz) with a target peak capacity of 2 – 7 Gb/s near the access point. High-capacity (peak capacity around 10 – 25 Gb/s) mmWave backhaul links working in line-of-sight (LOS) conditions will also connect the access points to the core network. This high-capacity backhaul link offers operators multihop short- and medium-range links in the range of hundreds of meters to 1 km. Currently, three frequency bands are considered for mmWave backhauling: (i) the 28 GHz band, (ii) the V-band (57 – 66 GHz), and the (iii) E-band. High-gain fixed-beam or electronically steerable antennas are required to implement 5G backhauling.
In this context, several antennas architectures, based on phased arrays or spatial feeding arrays, have been developed and demonstrated at CEA-Leti for short-, medium-, and long-range mmWave communications in the band 30 – 170 GHz. Several fully integrated mmW modules front-ends or sub-modules based on different packaging technologies have also been demonstrated at 60, 140 and 30 GHz. The results of the optimization, simulation, and characterization of the different antenna architectures will be detailed in this presentation. Conclusions on future challenges and roadmaps will be drown.

Lionel Rudant is currently Strategic Marketing Manager at Leti. He draws up innovation strategies for conquering IoT markets through key enabling technologies that unleash innovative business. He has successfully transferred Leti wireless technologies to automotive, aeronautics, and industrial and consumer electronics industries, among others. He works on projects in France, Europe and the USA, and regularly presents technologies and system roadmaps at conferences and workshops.
He was awarded a postgraduate degree in electronics and digital technology by Nantes University (France) and a technology research degree by Grenoble Institute of Technology in 2003 and 2004 respectively. He then managed industrial antenna projects for Radiall. He joined Leti in 2006 and has since undertaken electromagnetics, antenna and propagation research, prompting publications on compact disruptive antennas.