Nicolas Barbot - Revision history

2A01:CB05:840B:F900:28C9:927D:5208:4A8D: [TEST]

2026-02-19T15:17:51Z

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Nico at 11:04, 8 January 2026

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Nico at 10:24, 8 January 2026

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Nico at 14:21, 7 April 2025

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	'''Nicolas Barbot''' received the M.Sc. degree and Ph.D. degree from the University de Limoges, France in 2010 and 2013 respectively. His Ph.D. work in [https://www.xlim.fr/ Xlim] Laboratory was focused on error-correcting codes for the optical wireless channel. He also completed a post-doctoral work in joint source-channel decoding at [https://l2s.centralesupelec.fr/ 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 [https://lcis.grenoble-inp.fr/ LCIS] Laboratory covers wireless communications systems based on backscattering principle which include classical RFID and chipless RFID.		'''Nicolas Barbot''' received the M.Sc. degree and Ph.D. degree from the University de Limoges, France in 2010 and 2013 respectively. His Ph.D. work in [https://www.xlim.fr/ Xlim] Laboratory was focused on error-correcting codes for the optical wireless channel. He also completed a post-doctoral work in joint source-channel decoding at [https://l2s.centralesupelec.fr/ L2S] Laboratory, in Gif-sur-Yvette, France. Since September 2014, he has been an Associate Professor at the Université Grenoble Alpes - Grenoble Institute of Technology, in Valence, France. His scientific background at [https://lcis.grenoble-inp.fr/ LCIS] Laboratory covers wireless communications systems based on backscattering principle which include classical RFID and chipless RFID.

	His research interests 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.		His research interests 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.

Nico at 17:45, 14 March 2025

2025-03-14T17:45:39Z

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	'''Nicolas Barbot''' received the M.Sc. degree and Ph.D. degree from the University de Limoges, France in 2010 and 2013 respectively. His Ph.D. work in [https://www.xlim.fr/ 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 [https://l2s.centralesupelec.fr/ 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 [https://lcis.grenoble-inp.fr/ LCIS] Laboratory covers wireless communications systems based on backscattering principle which include classical RFID and chipless RFID.		'''Nicolas Barbot''' received the M.Sc. degree and Ph.D. degree from the University de Limoges, France in 2010 and 2013 respectively. His Ph.D. work in [https://www.xlim.fr/ Xlim] Laboratory was focused on error-correcting codes for the optical wireless channel. He also completed a post-doctoral work in joint source-channel decoding at [https://l2s.centralesupelec.fr/ 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 [https://lcis.grenoble-inp.fr/ 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.		His research interests 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 special interests on antenna design and instrumentation based on these phenomena.		He also places special interests on antenna design and instrumentation based on these phenomena.

Nico at 10:43, 2 August 2024

2024-08-02T10:43:56Z

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	!Period		!Period
	!Postion/Diploma		!Postion/Diploma
			\|-
			\|2023
			\|align=left\|HDR, Linear Time-Variant and Non-Linear Transponders for Identification and Sensing Applications, Valence, France
	\|-		\|-
	\|2014–2021		\|2014–2021
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	In the first part of my career, my research activities have been focused on chipless RFID.		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		This technology allows one 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		without using a silicon chip. However, since these tags are Linear Time-Invariant (LTI) systems
	<ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/range.pdf "Classical RFID vs. chipless RFID read range: Is linearity a friend or a foe?,"]		<ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/range.pdf "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~~.</ref>, their backscattered power		IEEE Transactions on Microwave Theory and Techniques, vol. 69, no. 9, pp. 4199-4208, Sept. 2021.</ref>, their backscattered power
	are also located in the same bandwidth as the one used by the reader making the reading difficult in non-free space environments.		are 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, coding capacity and media access control for any chipless tag.		Consequently, significant limitations appears in term of read range, coding capacity and media access control for any chipless tag.
	In order to break these limitations, my research investigations now cover:		In order to break these limitations, my research investigations now cover:
	* non-linear (or harmonic) transponders which can backscatter a power at <math>n f_0</math>. These transponders are base on a non-linear component (typically a Schottky diode).		* non-linear (or harmonic) transponders which can backscatter a power at <math>n f_0</math>. These transponders are base on a non-linear component (typically a Schottky diode).
	* linear time-variant transponders which can backscatter a power around <math>f_0</math> <ref>N. Barbot and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/nl.pdf "Linear time-variant chipless RFID sensor,"] IEEE Journal of Radio Frequency Identification, ~~accepted~~.</ref>. These transponders can modulate the backscattered signal (classical UHF tags, micro-Doppler or more generally any moving scatterers).		* linear time-variant transponders which can backscatter a power around <math>f_0</math> <ref>N. Barbot and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/nl.pdf "Linear time-variant chipless RFID sensor,"] IEEE Journal of Radio Frequency Identification, vol. 6, pp. 104-111, 2022.</ref>. 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		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 [[Differential RCS\|delta RCS]] <math>\sigma_d</math><ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/rcs.pdf "Differential RCS of modulated tag,"] IEEE Transactions on Antennas and Propagation, pp. ~~1–1~~, ~~2021~~, ~~early access~~. ~~doi: 10.1109/TAP~~.2021~~.3060943~~.</ref>.		are also characterized by a non zero [[Differential RCS\|delta RCS]] <math>\sigma_d</math><ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/rcs.pdf "Differential RCS of modulated tag,"] IEEE Transactions on Antennas and Propagation, vol. 69, no. 9, pp. 6128-6133, Sept. 2021.</ref>.

	Additional details can be found [[Research Activities\|here]].		Additional details can be found [[Research Activities\|here]].

	PhD students:		PhD students:
			* '''Meng Yang''', "Non-linear Transponders for Identification and Sensing Applications," Directeur: Nicolas Barbot.

	* '''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.		* '''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.

Nico at 17:15, 14 December 2022

2022-12-14T17:15:49Z

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	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.		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 special interests on antenna design and instrumentation based on these ~~phenomenons~~.		He also places special interests on antenna design and instrumentation based on these phenomena.

	==Education==		==Education==

Nico at 09:42, 2 December 2022

2022-12-02T09:42:05Z

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	'''Nicolas Barbot''' received the M.Sc. degree and Ph.D. degree from the University de Limoges, France. His Ph.D. work in [https://www.xlim.fr/ 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 [https://l2s.centralesupelec.fr/ 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 [https://lcis.grenoble-inp.fr/ LCIS] Laboratory covers wireless communications systems based on backscattering principle which include classical RFID and chipless RFID.		'''Nicolas Barbot''' received the M.Sc. degree and Ph.D. degree from the University de Limoges, France in 2010 and 2013 respectively. His Ph.D. work in [https://www.xlim.fr/ 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 [https://l2s.centralesupelec.fr/ 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 [https://lcis.grenoble-inp.fr/ 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.		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.

Nico at 21:31, 31 May 2022

2022-05-31T21:31:46Z

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	In these two cases, the tags cannot be described by LTI systems and are not bounded by the previous limitations. They		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 <math>\sigma_d</math><ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/rcs.pdf "Differential RCS of modulated tag,"] IEEE Transactions on Antennas and Propagation, pp. 1–1, 2021, early access. doi: 10.1109/TAP.2021.3060943.</ref>.		are also characterized by a non zero [[Differential RCS\|delta RCS]] <math>\sigma_d</math><ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/rcs.pdf "Differential RCS of modulated tag,"] IEEE Transactions on Antennas and Propagation, pp. 1–1, 2021, early access. doi: 10.1109/TAP.2021.3060943.</ref>.

	Additional details can be found [[Research Activities\|here]].		Additional details can be found [[Research Activities\|here]].

Nico at 19:33, 14 October 2021

2021-10-14T19:33:23Z

← Older revision		Revision as of 19:33, 14 October 2021
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	In these two cases, the tags cannot be described by LTI systems and are not bounded by the previous limitations. They		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 <math>\sigma_d</math><ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/~~delta~~.pdf "Differential RCS of modulated tag,"] IEEE Transactions on Antennas and Propagation, pp. 1–1, 2021, early access. doi: 10.1109/TAP.2021.3060943.</ref>.		are also characterized by a non zero delta RCS <math>\sigma_d</math><ref>N. Barbot, O. Rance, and E. Perret, [https://nicolas-barbot.ovh/wiki/pool/rcs.pdf "Differential RCS of modulated tag,"] IEEE Transactions on Antennas and Propagation, pp. 1–1, 2021, early access. doi: 10.1109/TAP.2021.3060943.</ref>.

	Additional details can be found [[Research Activities\|here]].		Additional details can be found [[Research Activities\|here]].