Florian WOLF
Ph.D. student
CEA-Leti Grenoble
MINATEC Campus
17 rue des Martyrs
F-38054 Grenoble Cedex
florian.wolf@cea.fr
Tel. +33 (0)4 38 78 63 99
Cross-disciplinary Telecommunications Engineer with expertise in theoretical modeling, signal processing, hardware implementation and field trials.
Passion for contributing to the development of complex systems and working in a multi-language international environment.
Research interests
Florian Wolf is currently working in the field of radio signal based positioning systems. His research interests include theoretical performance modeling, signal processing, beamforming, system design and implementation for wireless sensor networks with positioning functionality.
Ph.D. thesis topic
Research is carried out at CEA-Leti Grenoble under the guidance of Sébastien de Rivaz and François Dehmas.
The Ph.D. thesis is prepared under the supervision of Jean-Pierre Cances and Vahid Meghdadi from XLIM Limoges.
Positioning functionality of long range and low power consumption IoT systems
A new generation of long range radio modules opens perspectives for the implementation of Low Power Wide Area Networks (LPWAN), often associated with the concept of the Internet of Things (IoT) and Wireless Sensor Networks (WSN). Providing positioning information on these radio modules without the use of global navigation satellite systems (GNSS), gives rise to new applications and improved network management while achieving low power and low cost requirements. However, obtaining metrics (e.g. Time of Arrival, ToA; Angle of Arrival, AoA; Received Signal Strength Indicator, RSSI) for accurate positioning is challenging due to hardware limitations and impairments (e.g. transmission bandwidth, clock drift, delays) and the propagation channel. The thesis aims to achieve a proof of feasibility for the positioning functionality in Low Power wide Area Networks.
Publications
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F. Wolf, V. Berg, F. Dehmas, V. Mannoni, S. de Rivaz.
Multi-Frequency Phase Difference of Arrival for Precise Localization in Narrowband LPWA Networks.
2021 IEEE International Conference on Communications (ICC), Madrid, Spain, 2021.
Publication on IEEExplore
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V. Berg, F. Dehmas, F. Wolf.
Coherent Multi-channel Ranging for Precise Localization in Narrowband LPWA Networks: Performance Trials in an Indoor Environment.
2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit), 2021.
Publication on IEEExplore
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F. Wolf, S. de Rivaz, F. Dehmas, V. Mannoni, V. Berg, J-P. Cances .
Accurate Narrowband LPWA Ranging: Principles, Performance in AWGN and Multipath Channels.
2020 IEEE European Conference on Networks and Communications (EuCNC), Dubrovnik, Croatia, 2020.
Publication on IEEExplore
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F. Wolf.
Multi-Channel Ranging System for the Localization of Wireless Connected Objects in Low Power Wide Area Networks : From Modeling to Field Trials.
Doctoral thesis, Limoges, France, 2020.
Doctoral thesis on theses.fr
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F. Wolf, M. Sana, S. de Rivaz, F. Dehmas, J-P. Cances .
Comparison of Multi-Channel Ranging Algorithms for Narrowband LPWA Network Localization.
2019 The 5th International Symposium on Ubiquitous Networking (UNet), Limoges, France, 2019.
Publication on SpringerLink
Publication on HAL
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F. Wolf, K. le Déroff, S. de Rivaz, N. Deparis, F. Dehmas, J-P. Cances .
Benchmarking of Narrowband LPWA Physical Layer Ranging Technologies.
16th IEEE Workshop on Positioning, Navigation and Communications (WPNC), Bremen, Germany, 2019.
Publication on IEEExplore
Publication on HAL
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F. Wolf, J-B. Doré, X. Popon, S. de Rivaz, F. Dehmas, J-P. Cances.
Coherent Multi-Channel Ranging for Narrowband LPWAN: Simulation and Experimentation Results.
15th IEEE Workshop on Positioning, Navigation and Communications (WPNC), Bremen, Germany, 2018.
Publication on IEEExplore
Publication on HAL
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F. Wolf, C. Villien, S. de Rivaz, F. Dehmas, J-P. Cances.
Improved Multi-Channel Ranging Precision Bound for Narrowband LPWAN in Multipath Scenarios.
2018 IEEE Wireless Communications and Networking Conference (WCNC), Barcelona, Spain, 2018.
Publication on IEEExplore
Publication on HAL
Passed internship proposals
Announcements
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2019 9th XLIM Ph.D. Students Workshop
22 November 2019 // Limoges, France.
Presentation of the PhD thesis topic in a 2 minutes flashtalk followed by a poster session for detailed interactive discussions.
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IEEE 16th Workshop on Positioning, Navigation and Communications (WPNC)
23-24 October 2019 // Bremen, Germany.
The
following publication will be presented at WPNC2019 in Session 3 - Positioning in IoT and Industrial Networks.
WPNC 2019 program
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IEEE 15th Workshop on Positioning, Navigation and Communications (WPNC)
25-26 October 2018 // Bremen, Germany.
The
following publication will be presented at WPNC2018 in Session 2 - Ranging and Single-Link Radio Parameters Estimation.
WPNC 2018 program
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Journée localisation XLIM, Limoges 19/01/2018
Dans cette présentation les techniques de localisation adaptées aux systèmes IOT connues dans l’état de l’art seront présentées, ainsi leurs avantages, inconvénients et les équipes de recherche associées. Puis, la technique de la phase d’arrivée du signal RF, qui nécessite un traitement cohérent des signaux multicanal sera introduite. Des résultats d’une étude théorique menant sur les bornes de précision (Cramer-Rao lower bound) seront discutés. La présentation se conclura avec un aperçu de l’implémentation sur carte radio logiciel en cours et les expérimentations envisagées.
Dans une deuxième partie, le savoir-faire du CEA-Leti en matière de localisation sera présenté. Les compétences portent à la fois sur la radiolocalisation (architecture émetteur-récepteur, canal de propagation, protocole) et sur la localisation à partir de capteurs (inertiel). Un troisième axe, la fusion hybride, vise à combiner les différentes modalités par le biais d’algorithmes de fusion et filtrage et/ou d’approche coopérative entre mobiles. A cette occasion, on donnera un aperçu de divers démonstrateurs et réalisations matérielles du CEA-Leti. Enfin on présentera les sujets de thèse actuellement en cours sur ces différents thématiques, ainsi que leurs perspectives.
Announcement XLIM page
Announcement as PDF
Program as PDF
Studies and Qualifications
: Positioning Functionality of Long Range and Low Power Consumption IoT Systems
Ecole doctorale n°610 - Sciences et Ingénierie des Systèmes, Mathématiques, Informatique (SISMI)
Sciences et Ingénierie pour l'Information → Electronique des Hautes Fréquences, Photonique et Systèmes
Electrical Engineering and Information Technology
→ Specialization Microwave Engineering (KIT)
Signal and Image Processing and Communication
→ Specialization Signal and Image Processing, Communication Systems, Multimedia SICOM (INPG PHELMA)
Professional experiences
: Positioning Functionality of Long Range and Low Power Consumption IoT Systems
: Geolocalization Metrics for Point to Point Links between Long Range Low Power Radio Devices
: Characterization and Analysis of Aeroacoustic Signals: Application to Speech Production
: → Electronic Development Department / 7-Tesla MRT Radio-Electricity Laboratory
Competences
Languages
• German (native speaker)
• English/French (fluent)
• Romanian (basic skills)
Page last updated on 06/11/2021.