Mots-clés

Decoding Doppler compensation Entropy GMSK modulation Bit rate Ad hoc networks Channel coding communication system Modulation Codage Equalizers Channel model Carrier phase synchronization Ad Hoc Network DFE Channel simulation Underwater acoustic UWA communication Deep space communication Phase detector S-curve Bit error rate Underwater acoustic communications
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  • IdHAL : christophe-laot

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Christophe LAOT - Communications Numériques

Professeur à IMT Atlantique, département Signal et Communications.

Responsable de l'activité en communications acoustiques sous-marines.

Animateur de l'axe de recherche Mer du laboratoire CNRS UMR LabSTICC, équipe COM, pôle CACS.

Responsable du groupe régional ouest de la SEE (www.see.asso.fr)

Co-chair of IEEE OES Technology Committee on Underwater Communication, Navigation, and Positioning

Communications  sous-marines – lien vidéo : TB34 - YouTube

Projet FUI COMET - lien vidéo : http://perso.telecom-bretagne.eu/christophelaot/data/Video_COMET.avi

2009 Habilitation à diriger des recherches

1997 Thèse en communications et codage de l'information : «Egalisation autodidacte et turbo égalisation. Application aux canaux sélectifs en fréquences» These.pdf

1992 Mastère Communications, Optique, Formes et Images de l'ENST Bretagne

1991 Ingénieur de l'Ecole FRançaise d'Electronique et d'Informatique (EFREI 1991)

Article dans une revue11 documents

  • Antony Pottier, François-Xavier Socheleau, Christophe Laot. Quality-of-Service Satisfaction Games for Noncooperative Underwater Acoustic Communications. IEEE access, 2018. 〈hal-01761481〉
  • Antony Pottier, François-Xavier Socheleau, Christophe Laot. Robust Noncooperative Spectrum Sharing Game in Underwater Acoustic Interference Channels. IEEE Journal of Oceanic Engineering, Institute of Electrical and Electronics Engineers, 2017, 42 (4), pp.1019-1034. 〈10.1109/JOE.2017.2731060〉. 〈hal-01630275〉
  • Said Lmai, Mandar Chitre, Christophe Laot, Sébastien Houcke. Throughput-Efficient Super-TDMA MAC Transmission Schedules in Ad Hoc Linear Underwater Acoustic Networks. IEEE Journal of Oceanic Engineering, Institute of Electrical and Electronics Engineers, 2017, 42 (1), pp.156 - 174. 〈hal-01487046〉
  • François-Xavier Socheleau, Christophe Laot, Jean-Michel Passerieux. Parametric Replay-Based Simulation of Underwater Acoustic Communication Channels. IEEE Journal of Oceanic Engineering, Institute of Electrical and Electronics Engineers, 2015, 40 (4), pp.796 - 806. 〈10.1109/JOE.2015.2458211〉. 〈hal-01224555〉
  • Said Lmai, Mandar Chitre, Christophe Laot, Sébastien Houcke. Throughput-Maximizing Transmission Schedules for Underwater Acoustic Multihop Grid Networks. IEEE Journal of Oceanic Engineering, Institute of Electrical and Electronics Engineers, 2015, 40 (4), pp.853 - 863. 〈10.1109/JOE.2015.2474455〉. 〈hal-01224554〉
  • Said Lmai, Arnaud Bourre, Christophe Laot, Sébastien Houcke. An efficient blind estimation of carrier frequency offset in OFDM system. IEEE Transactions on Vehicular Technology, Institute of Electrical and Electronics Engineers, 2014, 63 (4), pp.1945 - 1950. 〈10.1109/TVT.2013.2285479 〉. 〈hal-01188795〉
  • Jean-Michel Passerieux, Francois-Xavier Socheleau, Christophe Laot. Achievable Rates over Doubly Selective Rician-Fading Channels under Peak-Power Constraint. IEEE Transactions on Wireless Communications, Institute of Electrical and Electronics Engineers, 2013, 12 (2), pp.586-594. 〈10.1109/TWC.2012.122212.111812〉. 〈hal-00802089〉
  • Francois-Xavier Socheleau, Milica Stojanovic, Christophe Laot, Jean-Michel Passerieux. Information-Theoretic Analysis of Underwater Acoustic OFDM Systems in Highly Dispersive Channels. Journal of Electrical and Computer Engineering, Hindawi Publishing Corp., 2012, 2012 (ID 716720), pp.15. 〈10.1155/2012/716720〉. 〈hal-00697027〉
  • François-Xavier Socheleau, Christophe Laot, Jean-Michel Passerieux. Stochastic replay of non-WSSUS underwater acoustic communication channels recorded at sea. IEEE Transactions on Signal Processing, Institute of Electrical and Electronics Engineers, 2011, 59 (10), pp.4838 - 4849. 〈hal-00640755〉
  • Omid Zia-Chahabi, Raphaël Le Bidan, Michel Morvan, Christophe Laot. Efficient frequency-domain implementation of block-LMS/CMA fractionally spaced equalization for coherent optical communications. IEEE Photonics Technology Letters, Institute of Electrical and Electronics Engineers, 2011, 23 (22), pp.1697 - 1699. 〈10.1109/LPT.2011.2166257〉. 〈hal-01196918〉
  • François-Xavier Socheleau, Christophe Laot, Jean-Michel Passerieux. Concise derivation of scattering function from channel entropy maximization. IEEE Transactions on Communications, Institute of Electrical and Electronics Engineers, 2010, 58 (11). 〈hal-00565754〉

Communication dans un congrès47 documents

  • Mohamed Amine Jhaidri, Alain Thomas, Christophe Laot. Carrier Phase Synchronization Techniques at Very Low SNR for Deep Space Missions. SPACEOPS 2018 : The 15th International Conference on Space Operations, May 2018, Marseille, France. Actes SPACEOPS 2018 : The 15th International Conference on Space Operations, 2018, 〈10.2514/6.2018-2398〉. 〈hal-01814198〉
  • Goulven Eynard, Christophe Laot. Timing recovery scheme for multi-antenna receiver in presence of Doppler shift. ICT 2018 : International Conference on Telecommunication , Jun 2018, Saint-Malo, France. Actes ICT 2018 : International Conference on Telecommunication 2018. 〈hal-01814199〉
  • Antony Pottier, François-Xavier Socheleau, Christophe Laot. Power-Efficient Spectrum Sharing for Noncooperative Underwater Acoustic Communication Systems. OCEANS 2016 - Monterey : MTS/IEEE international conference, Sep 2016, Monterey, United States. IEEE, Proceedings OCEANS 2016 - Monterey : MTS/IEEE international conference, pp.1 - 6, 2016, 〈10.1109/OCEANS.2016.7761437〉. 〈hal-01424511〉
  • Mohamed Amine Jhaidri, Alain Thomas, Christophe Laot. Performance analysis of GMSK Carrier synchronization loop phase detector at very low SNR. TTC 2016 : 7th ESA International Workshop on Tracking, Telemetry and Command Systems for Space Applications, Sep 2016, Noordwijk, Netherlands. Proceedings TTC 2016 : 7th ESA International Workshop on Tracking, Telemetry and Command Systems for Space Applications, 2016. 〈hal-01522672〉
  • Yupeng Tai, Frédéric Guilloud, Christophe Laot, Raphaël Le Bidan, Hai-Bin Wang. Joint Equalization and Decoding Scheme Using Modified Spinal Codes for Underwater Communications. OCEANS 2016 - Monterey : MTS/IEEE international conference, Sep 2016, Monterey, United States. IEEE, Proceedings OCEANS 2016 - Monterey : MTS/IEEE international conference, pp.1 - 6, 2016, 〈10.1109/OCEANS.2016.7761418〉. 〈hal-01424505〉
  • Mohamed Amine Jhaidri, Christophe Laot, Alain Thomas. Nonlinear Analysis of GMSK Carrier Phase Decovery Loop. ISIVC 2016 : International Symposium on Signal, Image, Video and Communications, Nov 2016, Tunis, Tunisia. Proceedings ISIVC 2016 : International Symposium on Signal, Image, Video and Communications, pp.230 - 235, 2016, 〈10.1109/ISIVC.2016.7893992〉. 〈hal-01514643〉
  • Antony Pottier, François-Xavier Socheleau, Christophe Laot. Distributed Power Allocation Strategy in Shallow Water Acoustic Interference Channels. SPAWC 2016 : IEEE 17th International Workshop on Signal Processing advances in Wireless Communications, Jul 2016, Edinburgh, United Kingdom. Proceedings SPAWC 2016 : IEEE 17th International Workshop on Signal Processing advances in Wireless Communications, pp.1 - 5, 2016, 〈10.1109/SPAWC.2016.7536793〉. 〈hal-01369655〉
  • Antony Pottier, François-Xavier Socheleau, Christophe Laot. Adaptive Power Allocation for Noncooperative OFDM Systems in UWA Interference Channels. UComms 2016 : Underwater Communications and Networking conference, Aug 2016, Lerici, Italie. Actes UComms 2016 : Underwater Communications and Networking conference, pp.1 - 5, 2016, 〈10.1109/UComms.2016.7583460〉. 〈hal-01514722〉
  • Bruno S. Chang, François-Xavier Socheleau, Christophe Laot. Widely Linear SC-FDE Systems for Underwater Acoustic Communication: Experimental Results. OCEANS 2016 - Monterey : MTS/IEEE international conference, Sep 2016, Monterey, United States. Proceedings OCEANS 2016 - Monterey : MTS/IEEE international conference, pp.1 - 4, 2016, 〈10.1109/OCEANS.2016.7761177〉. 〈hal-01424516〉
  • Andrés Nicolás Carvallo Pecci, Christophe Laot, Arnaud Bourre. Quadratic Chirp Modulation for Underwater Acoustic Digital Communications. OCEANS 2015 - Genova : MTS/IEEE international conference, May 2015, Gênes, Italy. pp.1 - 7, 2015, 〈10.1109/OCEANS-Genova.2015.7271558〉. 〈hal-01236731〉
  • François-Xavier Socheleau, Christophe Laot, Jean-Michel Passerieux. Simulation de canaux acoustiques sous-marins par rejeu stochastique paramétrique. GRETSI 2015 : 25ème colloque du Groupement de Recherche en Traitement du Signal et des Images, Sep 2015, Lyon, France. 2015. 〈hal-01224780〉
  • François-Xavier Socheleau, Antony Pottier, Christophe Laot. Stochastic Replay of SIMO Underwater Acoustic Communication Channels. OCEANS 2015 - Washington : MTS/IEEE international conference, Oct 2015, Washington, United States. Proceedings OCEANS 2015 - Washington : MTS/IEEE international conference, pp.1 - 6, 2015. 〈hal-01343440〉
  • Abdelhakim Youcef, Christophe Laot, Karine Amis Cavalec. Multiple-input hybrid frequency-time domain DFE over time-varying rayleigh-fading channel. DAT 2014 : 6ème séminaire sur les systèmes de Detection : Architectures et Technologies, Feb 2014, Alger, Algeria. 2014. 〈hal-00966478〉
  • François-Xavier Socheleau, Christophe Laot, Jean-Michel Passerieux. A Parametric Replay-Based Framework for Underwater Acoustic Communication Channel Simulation. UComms 2014 : Underwater Communications and networking, Sep 2014, Sestri Levante, Italy. 2014, Underwater Communications and Networking (UComms), 2014. 〈10.1109/UComms.2014.7017148 〉. 〈hal-01188803〉
  • Said Lmai, Mandar Chitre, Christophe Laot, Sébastien Houcke. TDMA based MAC Transmission Schedules in Multihop Grid Ad hoc Underwater Acoustic Networks. UComms 2014 : underwater communications conference, Sep 2014, Sestri Levante, Italy. 2014, 〈10.1109/UComms.2014.7017131〉. 〈hal-01188839〉
  • Said Lmai, Arnaud Bourre, Christophe Laot, Sébastien Houcke. Réduction des interférences entre sous-porteuses dans les systèmes OFDM fenêtrés sur canal acoustique sous-marin. GRETSI 2013 : 24ème colloque du Groupement de Recherche en Traitement du Signal et des Images, Sep 2013, Brest, France. 2013. 〈hal-00935222〉
  • Xiaoxia Yang, Sébastien Houcke, Christophe Laot, Hai-Bin Wang. Effective Soft Decision Feedback Equalizer for Channels with Low SNR in Underwater Acoustic. Oceans 2013 : MTS/IEEE conference, Jun 2013, Bergen, Norway. 2013. 〈hal-00935451〉
  • Abdelhakim Youcef, Christophe Laot, Karine Amis Cavalec. Single Carrier Frequency Division Multiple Access for Underwater Acoustic Communications. UA 2013 : 1st international conference on Underwater Acoustics, Jun 2013, Island Of Corfu, Greece. 2013. 〈hal-00856746〉
  • Arnaud Bourre, Said Lmai, Christophe Laot, Sébastien Houcke. A robust OFDM Modem for Underwater Acoustic Communications. Oceans 2013 : MTS/IEEE conference, Jun 2013, Bergen, Norway. pp.1 - 5, 2013, 〈10.1109/OCEANS-Bergen.2013.6608003〉. 〈hal-00935199〉
  • Abdelhakim Youcef, Christophe Laot, Karine Amis Cavalec. Version adaptative d'un égaliseur DFE hybride en bloc utilisant la technique Overlap and Save. GRETSI 2013 : 24ème colloque du Groupement de Recherche en Traitement du Signal et des Images, Sep 2013, Brest, France. 2013. 〈hal-00934305〉
  • Said Lmai, Arnaud Bourre, Christophe Laot, Sébastien Houcke. Advantages of pulse-shaping applied to OFDM systems over underwater acoustic channels. Oceans 2012: MTS/IEEE conference, Oct 2012, Hampton Road, Va, United States. pp.1 - 7, 2012, 〈10.1109/OCEANS.2012.6404831 〉. 〈hal-00822553〉
  • Abdelhakim Youcef, Christophe Laot, Karine Amis Cavalec. Multiple-input hybrid frequency-time domain adpative decision feedback equalization for underwater acoustic digital communications. European Conference on Underwater Acoustics, Jul 2012, Edimbourg, United Kingdom. 2012. 〈hal-00725036〉
  • Omid Zia-Chahabi, Raphaël Le Bidan, Christophe Laot, Michel Morvan. A Self-reconfiguring Constant Modulus Algorithm for Proper Polarization Demultiplexing in Coherent Optical Receivers. OFC 2012: Optical Fiber Communication Conference, Mar 2012, Los Angeles, États-Unis. 2012. 〈hal-00725000〉
  • J Gomes, F Pacini, Marco Luise, G. Bacci, L. Sanguinetti, et al.. An overview of project COMPOUND : Cooperative communications and positioning in mobile underwater networks. Futur Nework & mobile summit, Jul 2012, Berlin, Germany. 2012. 〈hal-00737171〉
  • Francois-Xavier Socheleau, Milica Stojanovic, Christophe Laot, Jean-Michel Passerieux. Achievable Rates of Underwater Acoustic OFDM Systems over Highly Dispersive Channels. European Conference on Underwater Acoustics, Jul 2012, Edinburgh, United Kingdom. pp.1-8, 2012. 〈hal-00697033〉
  • Abdeldjalil Aïssa-El-Bey, Karim Abed-Meraim, Christophe Laot. Adaptive blind estimation of sparse SIMO channels. WOSSPA 2011: 7th International Workshop on Systems, Signal Processing and their Applications, May 2011, Tipaza, Algeria. 2011. 〈hal-00609303〉
  • Christophe Laot, Raphaël Le Bidan. Adaptive MMSE turbo equalization with high-order modulations and spatial diversity applied to underwater acoustic communications. European Wireless 2011, Apr 2011, Vienne, Austria. 2011. 〈hal-00673282〉
  • Omid Zia-Chahabi, Raphaël Le Bidan, Michel Morvan, Christophe Laot. Adaptive single-carrier frequency-domain equalization for 100G coherent optical communications. SPPCom: Signal Processing in Photonics Communications, Jun 2011, Toronto, Canada. 2011. 〈hal-00673283〉
  • François-Xavier Socheleau, Jean-Michel Passerieux, Christophe Laot. Acoustic modem performance assessment via stochastic replay of at sea recorded underwater acoustic communication channels. 4th UAM Conference : Underwater Acoustic Measurements, Jun 2011, Island Of Kos, Greece. 2011. 〈hal-00609261〉
  • François-Xavier Socheleau, Jean-Michel Passerieux, Christophe Laot. Le canal de communication acoustique sous-marin : point de vue de la théorie de l'information. 23ème colloque GRETSI, Sep 2011, Bordeaux, France. 2011. 〈hal-00623233〉
  • Jean-Michel Passerieux, François-Xavier Socheleau, Christophe Laot. On the capacity of the underwater acoustic communication channel under realistic assumptions. IEEE European Wireless, Apr 2011, Vienne, Austria. 2011. 〈hal-00609263〉
  • Christophe Laot, Arnaud Bourre, Nicolas Beuzelin. Adaptive MMSE Turbo equalization usign high order modulation : experimental results on underwater acoustic channel. UAM 2011 : 4th Underwater acoustic conference, Jun 2011, Kos Island, Greece. 2011. 〈hal-00609249〉
  • Joël Trubuil, André Goalic, Nicolas Beuzeulin, Christophe Laot. Check and validate reed solomon block turbo codes in shallow underwater acoustic communication. Oceans '10, May 2010, Sydney, Australia. 2010. 〈hal-00523108〉
  • Jean-Michel Passerieux, François-Xavier Socheleau, Christophe Laot. Shallow water acoustic communications : how far are we from the channel capacity ?. European Conference on Underwater Acoustics, Jul 2010, Istanbul, Turkey. 2010. 〈hal-00515385〉
  • François-Xavier Socheleau, Christophe Laot, Jean-Michel Passerieux. A maximum entropy framework for statistical modeling of underwater acoustic communication channels. IEEE Oceans 2010, May 2010, Sydney, Australia. 2010. 〈hal-00515387〉
  • André Goalic, Joël Trubuil, Christophe Laot. Improvement of underwater acoustic communication using reed solomon bloc turbo codes. ISTC 2010 : 6th International symposium on turbo codes, Sep 2010, Brest, France. 2010. 〈hal-00523105〉
  • Christophe Laot, Nicolas Beuzeulin, Arnaud Bourre. Experimental results on MMSE turbo equalization in underwater acoustic communication using high order modulation. Oceans'10, Sep 2010, Seattle, United States. 2010. 〈hal-00523104〉
  • Joël Trubuil, André Goalic, Nicolas Beuzeulin, Christophe Laot. Underwater acoustic communication using reed solomon block turbo codes channel coding to transmit images and speech. Oceans'10, Sep 2010, Seattle, United States. 2010. 〈hal-00540857〉
  • Christophe Laot, P. Coince. Experimental results on adaptative MMSE turbo equalization in shallow underwater acoustic communication. Oceans'10, May 2010, Sydney, Australia. 2010. 〈hal-00609264〉
  • François-Xavier Socheleau, Jean-Michel Passerieux, Christophe Laot. Characterisation of time-varying underwater acoustic communication channel with application to channel capacity. Underwater Acoustic Measurements, Jun 2009, Nafplion, Greece. 2009. 〈hal-00473702〉
  • Jean Marvaldi, Jacques Legrand, Jean-François Masset, Laurent Delaunay, Michel Nicot, et al.. ROSE : development and demonstration of a "mobile Response Observatory" prototype for subsea environmental monitoring. Oceans'2009, May 2009, Bremen, Germany. 2009. 〈hal-00498420〉
  • N. Le Josse, Laurent Boher, Christophe Laot, Karine Amis, Maryline Hélard. Frequency-domain turbo equalization for OFDM and single-carrier transmission in ST-BICM systems. GLOBECOM'07, Nov 2007, Washington, United States. pp.3421-3426, 2007. 〈hal-00401262〉
  • Charlotte Langlais, Pierre-Jean Bouvet, Maryline Hélard, Christophe Laot. Which interleaver for Turbo-equalization system on frequency and time selective channels for high order modulations?. IEEE Workshop on Signal Processing Advances in Wireless Communications, 2003 SPAWC, Jun 2003, Rome, Italy. pp.673-677, 2003. 〈hal-00401682〉
  • Raphaël Le Bidan, Christophe Laot, D. Leroux. Fixed-Point Implementation of an Efficient Low-Complexity Turbo-Equalization Scheme. 3rd International Symposium on Turbo-Codes and Related Topics, Sep 2003, Brest, France. 1, pp.415-418, 2003. 〈hal-00917695〉
  • Raphaël Le Bidan, Christophe Laot, Dominique Leroux, Alain Glavieux. Analyse de la convergence en turbo-détection. 18e Colloque GRETSI sur le Traitement du Signal et des Images, Toulouse, France, 10-13 Septembre 2001, Sep 2001, Toulouse, France. 2001. 〈hal-00110906〉
  • P. Vila, Inbar Fijalkow, Maryline Hélard, Christophe Laot, D. Le Roux, et al.. Reduced-Complexity Soft Demapping for Turbo-Equalization. International Symposium on Turbo Codes ISTC'2000, Sep 2000, Brest, France. pp.515-518, 2000. 〈hal-00408302〉
  • Christophe Laot, Alain Glavieux. Détection à décision pondérée sur canal sélectif en fréquence en présence de codage de canal. GRETSI'95 : 15e colloque, Sep 1995, Juan-Les-Pins, France. Actes GRETSI'95 : 15e colloque, pp.517 - 520, 1995. 〈hal-00725626〉

Ouvrage (y compris édition critique et traduction)2 documents

  • Claude Berrou, Karine Amis Cavalec, Matthieu Arzel, Catherine Douillard, Alexandre Graell I Amat, et al.. Codes and Turbo Codes. Springer-Verlag, pp.400, 2010, IRIS international series, 9782817800387. 〈hal-01170419〉
  • Claude Berrou, Karine Amis Cavalec, Matthieu Arzel, Catherine Douillard, Alain Glavieux, et al.. Codes et turbocodes (sous la direction de Claude Berrou). Springer, pp.397, 2007, Iris, Iris, 978-2-287-32739-1. 〈hal-01801570〉

Brevet1 document

  • Christophe Laot, Charlotte Langlais, Maryline Hélard. Annuleur d'interférences entre symboles. France, N° de brevet: 01-13991. 2001. 〈hal-00402373〉

Pré-publication, Document de travail1 document

  • François-Xavier Socheleau, Antony Pottier, Christophe Laot. Watermark: bch1 Dataset Description. 2016. 〈hal-01404491〉