CITI seminar – Alexandre Guitton (Université Clermont Auvergne) – 22/11 at 10:30

Title: Présentation de travaux passés sur les boucles de routage et la couche MAC LoRaWAN, et de projets sur LoRa

Date and Place: November 22th 10h30, Amphi Chappe (CITI Lab, INSA-Lyon, Batiment Claude Chappe), 6 avenue des arts, 69621 Villeurbanne

Speaker: Dr. Alexandre Guitton (Université Clermont Auvergne)



Alexandre va être accueilli en délégation dans l’équipe AGORA du laboratoire CITI pour l’année 2021-2022. Dans cet exposé, il va présenter ses travaux passés les plus significatifs, et son projet de travaux pour la délégation.
1/ J’ai travaillé sur les boucles de routage qui se produisent lorsque deux protocoles de routage sont utilisés simultanément dans un réseau. Cette situation peut se produire dans plusieurs situations : si le protocole de routage est mis à jour (de manière désynchronisée), si le protocole de routage dépend de la priorité des paquets, si deux protocoles de routage sont utilisés sur deux time-slots différents, etc. Les propositions qui seront présentées permettent de garantir une transition rapide sans boucle.
2/ J’ai aussi travaillé sur la récupération de signaux LoRa qui sont en collision, en faisant l’hypothèse que leur puissance de réception est proche. Pour cela, j’utilise des informations temporelles liées à l’écart des instants de transmission entre les trames, et d’autres liées à la modulation LoRa.



Alexandre Guitton est professeur en informatique à l’Isima (école interne de Clermont Auvergne INP, établissement composante de l’Université Clermont Auvergne). Il effectue sa recherche au LIMOS (UMR CNRS). Il est spécialisé dans le domaine des réseaux sans fil et de l’intérêt des objets, et travaille plus précisément sur la conception de protocoles d’accès au médium pour la surveillance (généralement environnementale) par des réseaux de capteurs sans fil. Récemment, il s’est concentré sur la technologie LoRa et cherche à trouver des algorithmes efficaces permettant de récupérer des messages qui entrent en collision.


CITI seminar – Valeria Loscri (Inria) – 25/11 at 14:00

Title: Software Defined Approaches for Non-Conventional Wireless Communication Paradigms

Date and Place: November 25th 14h00, room TBA (CITI Lab, INSA-Lyon, Batiment Claude Chappe), 6 avenue des arts, 69621 Villeurbanne

Speaker: Dr. Valeria Loscri (Inria)



The increasing demand of high data rate, bandwidth, low latency in wireless communication systems, imposes the urgence to investigate on new communication paradigms.
New communication technologies should be integrated in communication systems to make them as much flexible as possible and capable to dynamically reacting to external conditions based on the status of each node. Based on these considerations, in this talk two main concepts will be discussed: 1) wireless systems based on Software Defined (SD) approaches and 2) non-conventional communication paradigms. The synergic combination of these two concepts seems to have a great potential for responding to the demand of new communication services. The non-conventional wireless communication paradigms as Visible Light Communication (VLC) and the integration of Reconfigurable Intelligent (Meta)Surface in the wireless systems, allow to extend the range of wireless systems and to meet the urgence of Sustainable ICT. The SD approach may provide a sufficient degree of flexibility and adaptivity for making the coexistence of non-conventional wireless solutions with the traditional wireless approaches very smooth.



Valeria Loscri is a permanent research scientist at Inria Lille – Nord Europe since October 2013. From December 2006 to September 2013, she was research fellow in the TITAN Lab at the University of Calabria, Italy. She received her M.Sc. and Ph.D degrees in computer science in 2003 and 2007, respectively, from the University of Calabria and her HDR (Habilitation à diriger des recherches) in 2018 from the Université de Lille (France). Her prominent research interests focus on emerging technologies for new communication paradigms such as Visible Light Communication (VLC), reconfigurable Intelligent (Meta)Surfaces (RIM) based systems and cyber security in wireless communication systems. She has been involved in several European Projects (H2020 CyberSANE, FP7 EU VITAL) and national projects. She is on the editorial board of IEEE COMST, Elsevier ComNet, ComCom, JNCA, IEEE Transaction on NanoBioscience. Since 2019, she is Scientific International Delegate for Inria Lille – Nord Europe.


CITI seminar – Mohamed Maouche (Inria) – 17/11 at 14:00

Title: Recent Approaches of Speaker Anonymization Techniques

Date and Place: November 17th 14h00, Citi (room TBD) + visio

Speaker: Dr. Mohamed Maouche (Postdoc Inria)



An increasing number of smart devices embed speech-commands. The usage of speech offers simplicity, accessibility and it also opens new human-computer interactions. However, the gathering and exploitation of this type of data raise many privacy threats as speech data is sensitive in nature. Personal information about the speaker can be inferred (e.g., gender, emotion…). In addition, speech is a biometric characteristic, it can be used to identify speakers. To address this issue anonymization techniques have been proposed. In this talk, we are going to present the recent approaches for speech anonymization techniques with a focus on x-vector based anonymization.



Starting October 2021, I’m a post-doc in Privatics (Inria) at Lyon working on privacy in Federated Learning in the Chaire DSVD supported by Renault and Labex IMU. Previously, I was a post-doc with Magnet (Inria) at Lille for two years, working on speech privacy. Before, I have received my Ph.D. in 2019 from Insa Lyon which I did under the supervision of Sara Bouchenak and Sonia Ben Mokhtar in Liris Lab working on Location Privacy. My main interest throughout my research is the re-identification and anonymization problem, especially while facing peculiar data.



CITI seminar – Miriam Kolar (Stanford University) – 16/11 at 14:00

Title: Human Centered Archaeoacoustics

Date and Place: November 16th 14h00-16h00, Amphi Chappe (CITI Lab, INSA-Lyon, Batiment Claude Chappe), 6 avenue des arts, 69621 Villeurbanne

Speaker: Dr. Miriam Kolar (Adjunct professor at Stanford University)



Despite over 125 years of modern room acoustics, spatial acoustics has only recently been applied in archaeological research. Likewise, musical instrument acoustics remains a growing but infrequent archaeometric approach. Auditory science is even less frequently incorporated. Since 2008, Miriam Kolar has led archaeoacoustics fieldwork and instrument performance studies at the 3,000-year-old UNESCO World Heritage Centre archaeological complex Chavín de Huántar, Perú, with a second Andean project about sound as an Inca administrative tool. In this presentation, Dr. Kolar will share case-study examples from her work in developing methodologies for “human-centered” archaeometric research, relating acoustics to human experience and social behavior in ancient contexts. Acoustical and psychoacoustical experiments in archaeological settings and with artifact sound-producing instruments enable data-driven reconstructions of heritage sites and instruments in use. Physics-based evaluations of human sensory perspectives support the ecological validity of heritage acoustics, opening a new technological frontier for cultural heritage research, preservation, and knowle.



Miriam A. Kolar, M.F.A., Ph.D., is an Adjunct Professor at the Center for Computer Research in Music and Acoustics (CCRMA) at Stanford University and a Visiting Professor at Amherst College (USA). She studies human-sonic interrelationships across time and geography, applying acoustical and auditory perceptual science methodologies within an anthropological framework. Principal investigator of the integrative archaeoacoustics project at the 3,000-year-old Andean ceremonial site and UNESCO World Heritage Centre Chavín de Huántar, Peru, Dr. Kolar collaborates on novel applications of digital technologies for cultural heritage research and engagement. Her cultural acoustics research ( leverages cross-disciplinary theories and tools to understand sonic experiential aspects of past and present life. In current work, and as co-organizer of the NEH-supported Digital Aural Heritage project (, she explores the potential of auralizations for scholarship and public interfacing. Topics of interest include contextual knowledge representation, information ethics, and ecological validity.

This talk is organized in the context of the creation of the Emeraude team which is a collaboration between the Grame institute and Citi-lab at Insa-Lyon (