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Radiocommunications et mobilité radiocommunications and mobility

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Résumé

Des études sont actuellement en cours pour définir la prochaine génération de systèmes, destinés à fournir les services de radiocommunication avec les mobiles du futur. Ces systèmes, identifiés par des sigles tels que UMTS, FPLMTS, IMT 2000, seront universels, multiservices, multienvironnements, et à très grande capacité. Ils font ľobjet de programmes internationaux de recherche et de normalisation. Le cnet participe à ces actions à travers le projet Rameau. Quatre chapitres portant chacun sur un domaine ďétude du projet (caractérisation du canal de propagation à large bande pour les mobiles, analyse de la technique ďaccès multiple par répartition en code (amrc ou cdma), étude portant sur la disponibilité et la capacité des futurs systèmes mobiles par satellites, développement de nouvelles classes ďalgorithmes pour la mise à jour de la localisation des mobiles dans le réseau) servent à illustrer la diversité des techniques qu’il est nécessaire ďétudier en préalable à la définition et la mise en œuvre des services futurs de radiocommunications avec les mobiles.

Abstract

Research is currently under way to define the next generation of systems to provide radiocommunication services with the mobiles of the future. These systems, with acronyms such as umts, fplmts and imt 2000, will be universal, multiservice, multienvironment and of very high capacity. They are the object of international research and standardization programs. The French national telecommunications research centre, cnet, is involved in these developments through the Rameau project. Four research areas of the project are examined (characterization of the wideband propagation channel for mobiles, analysis of the code distribution multiple access (cdma) technique, the availability and capacity of future satellite mobile systems and the development of new classes of algorithms for updating the locations of mobiles in the network) to illustrate the diversity of techniques that must be researched before the mobile radio services of the future can be defined and deployed.

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Authors and Affiliations

  1. France Télécom cnet, Centre de Belfort, 6, avenue des Usines, F-90007, Belfort

    Jean-Claude Bic

  2. France Télécom cnet, Centre Paris B, 38-40, avenue du Général Leclerc, F-92131, Issy-les-Moulineaux

    Alain Charbonnier, Daniel Duponteil, Nicolas Ruelle & Jean-Philippe Taisant

  3. Actuellement à ľEcole Supérieure des Postes et des Télécommunications de Tunis, Belfort

    Sami Tabbane

Authors
  1. Jean-Claude Bic
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  2. Alain Charbonnier
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  3. Daniel Duponteil
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  4. Nicolas Ruelle
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  5. Sami Tabbane
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  6. Jean-Philippe Taisant
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Bic, JC., Charbonnier, A., Duponteil, D. et al. Radiocommunications et mobilité radiocommunications and mobility. Ann. Télécommun. 50, 114–141 (1995). https://doi.org/10.1007/BF03000773

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