CITI Talk: “​​Structured Interference Management: Fundamentals and Algorithms”, by Xinping Yi, on 19th October

The next CITI talk will take place on 19th October at 10 am in Amphi Chappe.

This talk entitled “Structured Interference Management: Fundamentals and Algorithms” will be presented by Xinping Yi,  research and teaching associate at Technische Universität Berlin.


In the future large-scale wireless internet of things, spectrum sharing calls for interference management techniques with low-complexity, low signaling overhead and flexible scalability. A pragmatic strategy is to focus on the underlying interference networks, exploiting the structural property of network topologies and the optimality of the simplest techniques of practical interest. In this talk, we focus on the fundamentals and algorithms of two practical interference management techniques — Treating Interference as Noise (TIN) and Topological Interference Management (TIM). The fundamental structural properties for their information-theoretic optimality in terms of (generalized) Degrees-of-Freedom (DoF) are revealed. The insights are also translated into the principles of algorithm design for spectrum sharing mechanisms in device-to-device communications, and edge caching in Fog-RAN under the TIM setting.


Xinping Yi has been a postdoctoral research associate in Technical University of Berlin, Berlin, Germany, since November 2014. He joined EURECOM, Sophia Antipolis, France in 2011 and received his Ph.D. degree from Telecom ParisTech, Paris, France, in October 2014. From 2009 to 2011, he was a research engineer at Huawei Technologies, Shenzhen, China. His research interests include information theory, signal processing, and machine learning, as well as their applications in wireless communications, content delivery networks and data analytics. X. Yi was a recipient of the 2014 Chinese Government Award for Outstanding Students Abroad.

CITI Talk: “Next Generation of Cellular Wireless Networks: Some Preliminary Results on QoE Consistency and Multiple Cell Selection”, by Catherine Rosenberg, on 12th July.

The next CITI talk will take place on 12th July at 11 am in TD-C.

This talk entitled “Next Generation of Cellular Wireless Networks: Some Preliminary Results on  QoE Consistency and Multiple Cell Selection” will be presented by Catherine Rosenberg, professor at the University of Waterloo.


Catherine will present preliminary results in next generation of cellular wireless networks on two topics.

The first topic is on the challenges of offering consistent Quality of Experience (QoE) in an environment where due to mobility, arrival and departures and time varying channels, the system state is highly stochastic.The second topic is on multiple cell selection. We aim at answering two questions: 1) how is performance improved? 2) how can it be implemented?

This work was done in collaboration with Fidan Mehmeti and Ararat Shaverdian.


Catherine Rosenberg is a Professor in Electrical and Computer Engineering at the University of Waterloo. Since June 2010, she holds the Tier 1 Canada Research Chair in the Future Internet. From 1999 to 2004, Prof. Rosenberg was a Professor in the School of Electrical and Computer Engineering at Purdue University.

Prof. Rosenberg is the President of the Scientific Advisory Board of Orange (formerly France-Telecom).  She was elected an IEEE Fellow for contributions to resource management in wireless and satellite networks on 2011 and a Fellow of the Canadian Academy of Engineering in 2013. Her research interests are mainly in three areas: the Internet, Wireless Networks, and Energy Systems.

CITI Tutorial: “Simultaneous Energy and Information Transmission”, by Selma Belhadj Amor and Samir Perlaza, on 17th June

This CITI tutorial will take place on 17th June from 3 to 5 pm in Amphi Chappe.

The talk entitled “Simultaneous Energy and Information Transmission” will be presented by Selma Belhadj Amor, postdoctoral researcher at Inria, and Samir Perlaza, researcher at Inria.

Selma and Samir have already presented this tutorial in ICT 2016 (Thessaloniki, Greece), European Wireless 2016 (Oulu, Finland), and CROWNCOM 2016 (Grenoble, France).


This tutorial aims to familiarize the attendees with the new communication paradigm of simultaneous energy and information transmission (SEIT) in wireless networks. It is divided into four parts:

In the first part, the relevance of SEIT is highlighted as a powerful technique to ensure a more efficient energy utilization in future “green” communication systems, e.g, 5G networks, small cells, Wi-Fi networks, sensor networks and ad hoc networks. 

In the second part, particular attention is paid to existing techniques for implementing SEIT in point-to-point wireless communications. In particular, power allocation and beamforming techniques are reviewed. At the same time, strong emphasis is put on the fundamental limits of this technology using basic notions from information theory. 

In the third part, multi-user scenarios are studied and the key aspects of the energy-information trade-off are studied in both centralized networks, e.g, cellular networks and decentralized networks, e.g., sensor networks and ad hoc networks. In the latter, basic notions of game theory are studied to model the stable operating points of these networks. 

In the final part, practical aspects are tackled putting an emphasis on the main future challenges of SEIT in the context of 5G. For instance, front-end architectures allowing both energy-harvesting and information decoding are studied. At the same time, aspects regarding in-band and out-band energy transmission as well as co-located and non-cololated receivers and energy harvesters are discussed.

CITI Talk: “A new approach for secure personal cloud” by Nicolas Anciaux, on 26th May

The next CITI talk will take place on 26th May at 11 am in Amphi Chappe. This seminar entitled “A new approach for secure personal cloud” will be presented by Nicolas Anciaux, researcher at INRIA, in the SMIS project.


In the current Web model, individuals delegate the management of their data to online applications, each storing and exploiting the data into their own Web data silo. No concrete guarantee is offered to the individual regarding the usage and dissemination of their personal information, which often lack of transparency and depend on the underlying business models.
Today, a large economical and political consensus emerges to reestablish the control of the individuals on their data and improve trust. The current centralized approach seems by essence incapable of closing the gap. The SMIS team addresses this issue through the paradigm of “Personal Data Stores”, where individuals manage their digital life from a secure and personal hardware platform. Our research focus on several important prerequisites. In particular, we design embedded data management techniques for tamper resistant components, we work on Privacy-by-Design architectures based on an ecosystem of smart objects, and we study privacy preserving data dissemination models and distributed computations for such architectures. The presentation will present architectural considerations, embedded data management techniques, and application examples, that we consider emblematic in this work.


Nicolas Anciaux is a researcher at INRIA, in the SMIS project which focuses on secured and mobile information systems. He received his PhD in 2004 and his French Habilitation in 2014 from University of Versailles. Before joining Inria, Nicolas was a post-doc researcher at University of Twente and studied database implementations of the “right-to-be-forgotten” in ambient intelligent environments. Since he joined INRIA in 2006, his research interests lie in the area of data management on specific hardware architecture, and more precisely on secure chips and embedded systems. He proposes architectures using secure hardware, and data structures and algorithms to manage personal data with strong privacy guarantees using tamper resistant hradware. He is a co-designer of PlugDB, a secure and personal database device. Since 2015, Nicolas co-animates the research activities of the privacy cluster of the Digital Society Institute which brings together economists, jurists and computer scientists.

CITI Talk: “Visible Light Communication for the Internet-of-Things” by Stefan Mangold, on 29th April

The next CITI talk will take place on the 29th of April at 11 am. This talk entitled “Visible Light Communication for the Internet-of-Things” will be presented by Stefan Mangold, founder of Lovefield Wireless (Switzerland) and associate professor with ETH Zurich.


Visible Light Communication (VLC) with Light Emitting Diodes (LEDs) as transmitters and receivers enables low bitrate wireless adhoc networking, which is an interesting approach for consumer electronics such as toys and related applications in the entertainment industry. LED-to-LED VLC networks with VLC devices communicating over free-space optical links achieve a throughput of a few kilobit per second at distances of up to ten meters. LED-to-LED VLC networks are useful for combining light bulbs and illumination with low-complex networking. In this talk, we present recent research achievements in this field, address open challenges, and demonstrate the performance of a software-based VLC physical layer and a VLC medium access control layer that retain the simplicity of the LED-to-LED approach.

Speaker biography

Stefan Mangold owns the Swiss tech company Lovefield Wireless, which assists the industry with product innovation and technology transfers. Stefan Mangold has been with Disney Research until 2016, where he guided a team to contribute to The Walt Disney Company’s wireless research (toys, theme parks, mobile networks). Before joining Disney in 2009, Stefan worked at Swisscom in Switzerland and before that, at Philips Research, NY, USA. His research covers many aspects of wireless communication, for example, protocols and system aspects for wireless LAN, visible light communication, and the Internet-of-Things. Other research interests include smart toys and play patterns, and magical experience designs for the entertainment industry. Stefan teaches a course at the ETH Zurich, publishes, and generates IPR in related areas. He received his Dr.-Ing. / PhD. degree in electrical engineering / telecommunications from RWTH Aachen University in Germany.

CITI Talk: “Digital transitions and what they say to research”, by Daniel Kaplan, on 31st March


Since 2000, Fing “has been exploring the transforming potential of technologies, when placed in the hands of millions of people”. How to characterise this transforming potential, at a time when everybody talks about “digital transition” (and therefore a systemic change presented as both ineluctable and the “blues of the Net”)? What if “the digital era” was a pretext to allow oneself to think differently on any topic?
Based on some of Fing current works, we will look at how those works have open new ways, and the possible interactions with questions asked by the Inria researchers (and others):
– Personal data and privacy: what about focusing not only on the protection of individuals but also on their capacitation, by putting them in the position to be able to produce, capture and use their personal data for themselves?
– Ecological transition and digital transition: what if digital was the way to green transition, and ecology the collective aim missing from digital transition?
– Work: what if digital transition became an asset to bring meaning to work and professional itineraries?

Speaker Biography:

Daniel Kaplan, 53, is the founder and CEO of the Next-Generation Internet Foundation (FING), a nonprofit Think-&-Do-Tank that produces and shares novel and actionable ideas to anticipate digital transformations.
In 1986, he cofounded one of the world’s first digital communication agencies, JKLM, which he headed until the early 1990s. He then became a consultant and co-founded Proposition, a consultancy specialized in digital strategies.
Since the 1990’s, Daniel Kaplan has been deeply involved in the Internet’s development and evolution. He was VP-Membership of the Internet Society worldwide, and contributed to the creation of ICANN. He served in the European Commission’s e-Europe’s Experts Chamber and currently sits in France’s National Digital Council.
He is a member of several large companies’ and research centre’s Foresight Committees.
Mr. Kaplan has written or directed more than 25 books and public reports on the internet, mobility and ubiquitous networking, ambient intelligence, e-inclusion, e-commerce, e-education, electronic media, cities and sustainable development, privacy and digital identities…

Latest books in English:
Next-Generation Innovation, Bpifrance, 2015
Digital Disruptions, “Promises”, Fing, 2013
Digital Privacy Revisited, To protect and to project, Fyp Editions, 2010


CITI Talk: “Dedicated networks for IoT : PHY / MAC challenges”, by Claire Goursaud, on 3rd March

This presentation will focus on the emerging transmission technologies dedicated to IoT networks. We first point out the need of dedicated technologies for IoT. Then, we present the PHY and MAC layers of the technologies that are already deployed, or likely to be deployed: UNB by SigFox, CSS by LoRaTM, Weighless, and RPMA by Ingenu. We then compare their performances to highlight their pros and cons.

Speaker Biography:

Dr Claire GOURSAUD obtained her PhD in High Frequency and Optical Telecommunications in 2006 from the University of Limoges, working on Signal Processing for Optical Communications. In September 2007, she joined the INSA de Lyon (Institut National des Sciences Appliquées), as an Assistant Professor in the telecommunication department, and the CITI laboratory. Her research interests focus on Cooperation in Wireless Sensor Networks, and particularly on Body Area Networks and IoT networks.

CITI Talk: “A Framework for Resilient and Secure Spectrum Sensing on Cognitive Radio Networks”, by Michele Nogueira, on 2nd February


Primary user emulation attacks (PUEAs) are one of the most damaging threats in cognitive radio networks. Malicious or selfish secondary users pretend legitimate primary users to profit from the opportunistic use of the licensed frequency spectrum. Since cognitive radio importance has enhanced as an approach to spectral efficiency and to diminish the negative effects of wireless network scalability, approaches for PUEAs defense have arisen, evolving their architectural strategy, node’s operation and analysis design. This talk overviews recent achievement in PUEA defenses and presents a classification. Persistently unsolved challenges in the field are highlighted, and a framework for tackling one of the main challenges – the lack of flexibility to address this highly compromising attack – is outlined, promoting progress in the art of PUEA defense. As proof of concept, results present improvements in attack analysis employing flexible and multidimensional techniques on a case study. Finally, open issues and future directions are emphasized.

​Speaker ​Bio​graphy​:

Michele Nogueira is Professor of Computer Science at Federal University of Paraná, where she has been since 2010. In 2016, she will spend her sabbatical year as visiting faculty at Carnegie Mellon University, USA. She received her doctorate in Computer Science from the University Pierre et Marie Curie – Sorbonne Universités, Laboratoire d’Informatique de Paris VI (LIP6) in 2009. She was a Visiting Researcher at Georgia Institute Technology (GeorgiaTech) and a Visiting Professor at University Paul Sabatier in 2009 and 2013, respectively. Her research interests include wireless networks, security and dependability. She has worked on providing resilience to self-organized, cognitive and wireless networks by adaptive and opportunistic approaches. Dr. Nogueira was one of the pioneers in addressing survivability issues in self-organized wireless networks, being the works “A Survey of Survivability in Mobile Ad Hoc Networks” and “An Architecture for Survivable Mesh Networking” her prominent scientific contributions. She has been a recipient of Academic Scholarships from Brazilian Government on her undergraduate and graduate years, and of international grants such as from the ACM SIGCOMM Geodiversity program. She is also Associate Technical Editor for the IEEE Communications Magazine and the Journal of Network and Systems Management.​