13 results on '"Gwillerm Froc"'
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2. On the Data Delivery Delay taken by Random Walks in Wireless Sensor Networks.
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Issam Mabrouki, Gwillerm Froc, and Xavier Lagrange
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- 2008
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3. Design and performance of wireless data gathering networks based on unicast random walk routing.
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Gwillerm Froc, Issam Mabrouki, and Xavier Lagrange
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- 2009
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4. Resource Allocation and Wireless Scheduling Scheme for a HiperLAN/2 System.
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Christophe Mangin, Gwillerm Froc, and Romain Rollet
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- 2005
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5. Random walk based routing protocol for wireless sensor networks.
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Issam Mabrouki, Xavier Lagrange, and Gwillerm Froc
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- 2007
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6. Multi-band OFDM transmission at 100 Gbps with sub-band optical switching
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R. Clavier, Christophe Betoule, J. Karaki, Yves Jaouën, Alain Poudoulec, Omid Zia-Chahabi, Mengdi Song, R. Le Bidan, Michel Morvan, M. Van der Keur, B. Dumas-Feris, Gilles Thouenon, Thierry Guillossou, Didier Grot, Philippe Gravey, Gwillerm Froc, Erwan Pincemin, Marie-Laure Moulinard, T. Le Gall, Orange Labs [Lannion], France Télécom, Département Signal et Communications ( SC ), Université européenne de Bretagne ( UEB ) -Télécom Bretagne-Institut Mines-Télécom [Paris], Yenista Optics (Entreprise), Département COMELEC - Communications & Electronique, Laboratoire Traitement et Communication de l'Information ( LTCI ), Télécom ParisTech-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ) -Télécom ParisTech-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ), Lab-STICC_TB_CACS_COM, Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance ( Lab-STICC ), École Nationale d'Ingénieurs de Brest ( ENIB ) -Université de Bretagne Sud ( UBS ) -Université de Brest ( UBO ) -Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques ( IBNM ), Université de Brest ( UBO ) -Université européenne de Bretagne ( UEB ) -ENSTA Bretagne-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ) -École Nationale d'Ingénieurs de Brest ( ENIB ) -Université de Bretagne Sud ( UBS ) -Université de Brest ( UBO ) -Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques ( IBNM ), Université de Brest ( UBO ) -Université européenne de Bretagne ( UEB ) -ENSTA Bretagne-Institut Mines-Télécom [Paris]-Centre National de la Recherche Scientifique ( CNRS ), Département Optique ( OPT ), Mitsubishi Electric R&D Centre Europe (Entreprise) ( MERCE ), Département Signal et Communications (SC), Institut Mines-Télécom [Paris] (IMT)-Télécom Bretagne-Université européenne de Bretagne - European University of Brittany (UEB), Département Communications & Electronique (COMELEC), Laboratoire Traitement et Communication de l'Information (LTCI), Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Supérieure des Télécommunications (ENST), Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance (Lab-STICC), École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-École Nationale d'Ingénieurs de Brest (ENIB)-Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Télécom Bretagne-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université européenne de Bretagne - European University of Brittany (UEB)-École Nationale Supérieure de Techniques Avancées Bretagne (ENSTA Bretagne)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Département Optique (OPT), Mitsubishi Electric R&D Centre Europe (Entreprise) (MERCE), and Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom [Paris] (IMT)
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Engineering ,business.industry ,Optical cross-connect ,02 engineering and technology ,[ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing ,Optical performance monitoring ,Optical modulation amplitude ,Optical burst switching ,01 natural sciences ,Passive optical network ,Optical switch ,Atomic and Molecular Physics, and Optics ,010309 optics ,020210 optoelectronics & photonics ,Optical Transport Network ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,[ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic ,business ,Optical add-drop multiplexer ,[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing - Abstract
International audience; In this paper, we present an original work on sub- wavelength optical switching performed over a coherent multi- band orthogonal frequency-division multiplexing (MB-OFDM) super-channel operating at 100 Gbps. After having demonstrated that dual-polarization MB-OFDM (DP-MB-OFDM) is as efficient as single-carrier dual-polarization quaternary phase shift keying (DP-QPSK) technology to transport 100 Gbps data-rate over a 10 × 100-km G.652 fiber-based transmission line, we show that opti- cal add-drop of OFDM sub-bands as narrow as 8 GHz inside a 100 Gbps DP-MB-OFDM signal constituted of four sub-bands is fea- sible in the middle of this 1000-km transmission line. The flexible optical add-drop multiplexer (FOADM) implemented here is con- stituted by the association of an ultra-narrow pass-band and stop- band optical filter. The design and realization of such ultra-selective optical filters is presented, while the impact of their physical fea- tures over the quality of transmission is discussed. To prove that several add-drop multiplexers can be cascaded, our FOADM is in- troduced into a G.652 fiber-based recirculating loop and the impact of the cumulated filtering transfer function as well as the crosstalk inside the OADM are investigated. A typical use case for the in- troduction of such FOADM into long-haul transport networks is given, and the capital expenditure (CAPEX) cost advantage for the multi-layer transport networks is highlighted. By the proof of concept delivered here, combination of super-channel and sub- wavelength optical switching pushes network flexibility far away of what is today proposed by system vendors, opening new horizons for an optimized use of multi-layer transport networks.
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- 2014
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7. 100 Gbps Multi-Band OFDM Transmission over 1000 km of G.652 Fibre and a Cascade of Five Sub-Wavelength OADMs
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Gwillerm Froc, M. Van der Keur, R. Le Bidan, Erwan Pincemin, Alain Poudoullec, Yves Jaouën, Philippe Gravey, Michel Morvan, Mengdi Song, N. Nicolas, and Julie Karaki
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Physics ,Signal processing ,Multi band ,Optics ,Transmission (telecommunications) ,business.industry ,Cascade ,business ,Multiplexer ,Ofdm transmission ,Free-space optical communication ,Sub wavelength - Abstract
We study here the impact of sub-wavelength optical filtering on 100 Gbps coherent multi-band OFDM transmission system. Error-free transmission is achieved after 1000 km of uncompensated G.652 fibre line and a cascade of five optical add-drop multiplexers.
- Published
- 2014
- Full Text
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8. On the interest of multi-band OFDM in backhaul networks
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Jeremie Jauffrit, Michiel van der Keur, Sofiene Blouza, Gwillerm Froc, Nicolas Brochier, Christophe Mangin, Philippe Gravey, Michel Joindot, Esther Le Rouzic, Michel Morvan, Orange Labs [Lannion], France Télécom, Mitsubishi Electric ITE-TCL, entreprise, Département Optique (OPT), Institut Mines-Télécom [Paris] (IMT)-Télécom Bretagne-Université européenne de Bretagne - European University of Brittany (UEB), EKINOPS, Fonctions Optiques pour les Technologies de l'informatiON (FOTON), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université européenne de Bretagne - European University of Brittany (UEB)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Centre National de la Recherche Scientifique (CNRS)-Télécom Bretagne, Yenista Optics, Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom [Paris] (IMT), Université de Rennes (UR)-Université européenne de Bretagne - European University of Brittany (UEB)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-École Nationale Supérieure des Sciences Appliquées et de Technologie (ENSSAT)-Télécom Bretagne-Centre National de la Recherche Scientifique (CNRS)
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Metropolitan area network ,Signal processing ,business.industry ,Orthogonal frequency-division multiplexing ,Computer science ,ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS ,Optical communication ,02 engineering and technology ,Optical performance monitoring ,021001 nanoscience & nanotechnology ,01 natural sciences ,Multiplexing ,010309 optics ,Backhaul (telecommunications) ,Optical fiber communication ,Multi band ,0103 physical sciences ,Electronic engineering ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,0210 nano-technology ,business ,Computer network ,OFDM - Abstract
International audience; We present a novel all optical aggregation technology based on MB OFDM and evaluate its economical interest in a typical backhaul network configuration.
- Published
- 2012
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9. Outage Probability derivations for PDL-disturbed Coherent Optical Communication
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Cédric Ware, Yves Jaouën, Philippe Ciblat, Pierre Delesques, Gwillerm Froc, Communications Numériques (COMNUM), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris-Institut Mines-Télécom [Paris] (IMT)-Télécom Paris, Département Communications & Electronique (COMELEC), Télécom ParisTech, Télécommunications Optiques (GTO), and HAL, TelecomParis
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Signal processing ,Birefringence ,[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic ,Optical communication ,Statistical model ,02 engineering and technology ,Outage probability ,01 natural sciences ,010309 optics ,020210 optoelectronics & photonics ,Polarization mode dispersion ,Computer Science::Logic in Computer Science ,0103 physical sciences ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,Systems design ,[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing ,ComputingMilieux_MISCELLANEOUS ,[SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing ,Computer Science::Information Theory ,Mathematics - Abstract
We derive in closed-form the outage probability for different statistical models of PDL and evaluate their accuracy. From the resulting expressions, we quantify its impact on optical transmissions as an SNR penalty.
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- 2012
- Full Text
- View/download PDF
10. Influence of guard band on channel capacity for optical transmission systems
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Pierre Delesques, Philippe Ciblat, Yves Jaouën, Cédric Ware, and Gwillerm Froc
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Physics ,Kerr effect ,business.industry ,Guard band ,Physics::Optics ,Transmission system ,Information theory ,Channel capacity ,Nonlinear system ,Optics ,Wavelength-division multiplexing ,business ,Adaptive optics ,Nonlinear Sciences::Pattern Formation and Solitons ,Computer Science::Information Theory - Abstract
We analyze the influence in non-dispersive and dispersive fiber of guard band between WDM channels on the data rate limit given by the information-theoretic Shannon capacity concept when nonlinear Kerr effect occurs.
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- 2011
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11. Algorithm for ad-hoc piconet topology initialization
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Xavier Lagrange, D. Trezentos, Gwillerm Froc, I. Moreau, Mitsubishi Electric ITE-TCL, Rennes (MITSUBISHI ELECTRIC ITE-TCL), Mitsubishi Electric ITE-TCL, Département Réseaux, Sécurité et Multimédia (RSM), and Université européenne de Bretagne - European University of Brittany (UEB)-Télécom Bretagne-Institut Mines-Télécom [Paris] (IMT)
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IEEE 802.15.3 ,Vehicular ad hoc network ,business.industry ,Computer science ,Wireless ad hoc network ,Wireless network ,PICONET ,Distributed computing ,Logical topology ,[INFO.INFO-MM]Computer Science [cs]/Multimedia [cs.MM] ,Initialization ,Mobile ad hoc network ,Ad hoc wireless distribution service ,Topology ,Ad-hoc networks ,[INFO.INFO-NI]Computer Science [cs]/Networking and Internet Architecture [cs.NI] ,Optimized Link State Routing Protocol ,Piconet ,WPAN ,Wireless ,business ,Personal area network ,Algorithm ,Computer network - Abstract
International audience; This paper deals with piconet topology issues in IEEE 802.15.3 High Rate Wireless Personal Area Network standard. These issues preventing two devices to establish a connection come from the coexistence of two conflicting concepts : ad-hoc networking and centralized coordination. An algorithm for the initialization of the topology of the piconet is proposed. This algorithm leads to a probability higher than 95% of connection success in the whole power emission range defined by the standard.
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- 2003
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12. Ultra large bande : enjeux et perspectives pour une radio sans licence
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Stephane Mallegol, Stephane Paquelet, Alexis Bisiaux, and Gwillerm Froc
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Electrical and Electronic Engineering - Abstract
Depuis 2002, un chasse-croise entre reglementation, standardisation, travaux academiques et developpements industriels renouvelle sans cesse la thematique radio ultra large bande. L'objectif de cet expose est de presenter l'etroite intrication entre les multiples facettes d'un nouveau paradigme des communications : l'impulsion radio, et d'envisager un cadre de developpement propice a son avenement. A partir d'une reglementation autorisant des emissions electromagnetiques typiques inferieures a 0,5 mW sur une bande de quelques Gigahertz, deux thematiques seront abordees. D'une part on discutera des contraintes a imposer pour qu'en reseau les perturbations induites sur les services existants soient maitrisees. D'autre part, on envisagera des architectures materielles capables d'atteindre des debits de l'ordre du Gigabit/s.
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- 2006
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13. Mitigation of PDL in coherent optical communications: how close to the fundamental limit?
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Cédric Ware, Yves Jaouën, Philippe Ciblat, G. Rekaya, Sami Mumtaz, Gwillerm Froc, P. Delesques, Elie Awwad, Télécommunications Optiques (GTO), Laboratoire Traitement et Communication de l'Information (LTCI), Institut Mines-Télécom [Paris] (IMT)-Télécom Paris-Institut Mines-Télécom [Paris] (IMT)-Télécom Paris, Département Communications & Electronique (COMELEC), Télécom ParisTech, Télécom ParisTech-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS), Communications Numériques (COMNUM), and HAL, TelecomParis
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Physics ,Signal processing ,[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic ,Optical communication ,Data_CODINGANDINFORMATIONTHEORY ,02 engineering and technology ,Optical performance monitoring ,01 natural sciences ,010309 optics ,020210 optoelectronics & photonics ,Polarization mode dispersion ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Bit error rate ,Electronic engineering ,[SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic ,ComputingMethodologies_GENERAL ,Low-density parity-check code ,[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing ,ComputingMilieux_MISCELLANEOUS ,[SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing ,Computer Science::Information Theory ,Optical communications repeater ,Coding (social sciences) - Abstract
Considering coherent optical transmissions with PDL disturbance, we evaluate how far from the fundamental limit (based on the outage probability) are conventional coding schemes using Polarization-Time codes and/or LDPC codes.
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