Difference between revisions of "Nicolas Barbot"

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[https://nicolas-barbot.ovh/wiki/pool/cv_en.pdf English Version]

[https://nicolas-barbot.ovh/wiki/pool/cv.pdf French Version]
[https://nicolas-barbot.ovh/wiki/pool/cv.pdf French Version]
[https://nicolas-barbot.ovh/wiki/pool/cv_en.pdf English Version]


Revision as of 13:15, 10 June 2021

Nicolas Barbot
Born (1986-08-11) August 11, 1986 (age 36)
Limoges, France

Nicolas Barbot received the M.Sc. degree and Ph.D. degree from the University de Limoges, France. His Ph.D. work in Xlim Laboratory was focused on error-correcting codes for the optical wireless channel. He also realized a post-doctoral work in joint source-channel decoding at L2S Laboratory, in Gif-sur-Yvette, France. Since September 2014, he has been an Assistant Professor at the Université Grenoble Alpes - Grenoble Institute of Technology, in Valence, France. His scientific background at LCIS Laboratory covers wireless communications systems based on backscattering principle which include classical RFID and chipless RFID.

His research interest include transponders which can not be described by linear time-invariant systems. This gathers harmonic transponders which are based on the use of a non-linear component (Schottky diode) or linear time-variant transponders which are based on the modification of their response in the time domain. He also places a special interest on antenna design and instrumentation based on these phenomenons .


Period Postion/Diploma
2014–2021 Assistant Professor at Grenoble INP - Esisar, LCIS, Valence, France
2013–2014 Post-Doc at Laboratoire des Signaux et Systèmes (L2S), Cross-Layer Design of Wireless Tranceivers, Gif-sur-Yvette, France
2010–2013 PhD Thesis, Xlim CNRS UMR 7252, Channel Coding for Optical Wireless Communications, Limoges, France
2009–2010 Master Degree, Faculté des Sciences, Technologies Hyperfréquences, Électronique et Optique, Limoges, France
2007–2010 Diplome d'ingénieur, École Nationale Supérieure d’Ingénieurs de Limoges, Électronique et Télécommunications, Limoges, France
2005–2007 DUT Mesures Physiques, IUT du Limousin, Limoges, France


Courses Full name Grade ECTS
CE515 Advanced Processor Architecture and SoC Design 5A 4
PX505 Innovation Project 5A 4
AC469 Introduction to statistical signal processing 4App 1.5
SC311 Wireless Communications 3A 2.5
MA331 Information Theory and Channel Coding 3A 3
PX302 Introduction to STM32 micro-controllers 3A 3
PX212 Mini-Project 2A 6

Research Activities

In the first part of my career, my research activities have been focused on chipless RFID. This technology allows to reduce the cost of the tags since information can be embedded and transmitted to the reader without using a silicon chip. However, since these tags are Linear Time-Invariant (LTI) systems [1], their backscattered power is also located in the same bandwidth as the one used by the reader making the reading difficult in non-free space environments. Consequently, significant limitations appears in term of read range and coding capacity for any chipless tag. In order to break these limitations, my research investigations now cover:

  • non-linear (or harmonic) transponders which can backscatter a power at . These transponders are base on a non-linear component (typically a Schottky diode).
  • linear time-variant transponders which can backscatter a power around [2]. These transponders can modulate the backscattered signal (classical UHF tags, micro-Doppler or more generally any moving scatterers).

In these two cases, the tags cannot be described by LTI systems and are not bounded by the previous limitations. They are also characterized by a non zero delta RCS [3].

Additional details can be found here.

PhD students:

  • Ashkan Azarfar, "Détection de tags sans puce basée sur l'effet Doppler pour les applications de reconnaissance de gestes," Directeur: Etienne Perret, Co-directeur: Nicolas Barbot.
  • Florian Requena, "Conception de tags RIFD sans puce, robustes, pour applications capteur," Directeur: Etienne Perret, Co-directeur: Darine Kaddour, Nicolas Barbot.
  • Raymundo de Amorim Junior, "Tags sans puce millimétriques pour applications sécurisées," Directeur: Etienne Perret, Co-directeur: Romain Siragusa, Nicolas Barbot.
  • Rahul Unnikrishnan, "Reconnaissance de gestes avec des tags chipless," Directeur: Etienne Perret, Co-directeur: Nicolas Barbot.
  • Raphael Tavares de Alencar, "Contribution à la conception et la réalisation de tags RFID sans puce compatibles avec des procédés industriels de fabrication," Directeur: Etienne Perret, Co-directeur: Marco Garbati, Nicolas Barbot.
  • Florent Bonnefoy, "Authentification dans le domaine THz," Directeur: Frédéric Garet, Co-directeur: Maxime Bernier, Nicolas Barbot.

See the complete List of Publications.


English Version

French Version


  1. N. Barbot, O. Rance, and E. Perret, "Classical RFID vs. chipless RFID read range: Is linearity a friend or a foe?," IEEE Transactions on Microwave Theory and Techniques, pp. 1–1, 2021, early access. doi: 10.1109/TMTT.2021.3077019.
  2. N. Barbot and E. Perret, "Linear time-variant chipless RFID sensor," IEEE Journal of Radio Frequency Identification, submitted.
  3. N. Barbot, O. Rance, and E. Perret, "Differential RCS of modulated tag," IEEE Transactions on Antennas and Propagation, pp. 1–1, 2021, early access. doi: 10.1109/TAP.2021.3060943.

External links

Google Scholar