Orange S.A.

About: Orange S.A. is a company organization based out in Paris, France. It is known for research contribution in the topics: Terminal (electronics) & Signal. The organization has 6735 authors who have published 9190 publications receiving 156440 citations. The organization is also known as: Orange SA & France Télécom.

Optical wireless communications for broadband access in home area networks

Abstract: As a part of the EU-FP7 R&D programme, the OMEGA project (hOME Gigabit Access) aims at bridging the gap between mobile broadband terminals and the wired backbone network in homes. To provide Gb/s connectivity a combination of various technologies is considered. Beside radio frequencies, the wireless links will use infrared and visible light. Combined with power-line communications this enables a home area network (HAN) that meets the vision of broadband home networking dasiawithout new wirespsila. A technology-independent MAC layer is foreseen to control such network and to provide services as well as connectivity to any device the user wishes to connect. Moreover, this MAC layer should allow the service to follow the user from device to device in any room of a building /apartment. The contribution presents ideas and approaches for broadband optical wireless (OW) communications using infrared Gb/s hotspots and 100 Mb/s information broadcasting by means of interior lighting based on white-light LEDs. Important issues concerning the physical layer are discussed.

Networks new economical virtual private

Abstract: The idea is to reduce costs without undermining quality of service.

Recent Results From the EU POF-PLUS Project: Multi-Gigabit Transmission Over 1 mm Core Diameter Plastic Optical Fibers

Abstract: Recent activity to achieve multi-gigabit transmission over 1 mm core diameter graded-index and step-index plastic optical fibers for distances up to 50 meters is reported in this paper. By employing a simple intensity-modulated direct-detection system with pulse amplitude or digital multi-tone modulation techniques, low-cost transceivers and easy to install large-core POFs, it is demonstrated that multi-gigabit transmission up to 10 Gbit/s over 1-mm core diameter POF infrastructure is feasible. The results presented in this paper were obtained in the EU FP7 POF-PLUS project, which focused on applications in different scenarios, such as in next-generation in-building residential networks and in datacom applications.

Insensitive load balancing

Abstract: A large variety of communication systems, including telephone and data networks, can be represented by so-called Whittle networks. The stationary distribution of these networks is insensitive, depending on the service requirements at each node through their mean only. These models are of considerable practical interest as derived engineering rules are robust to the evolution of traffic characteristics. In this paper we relax the usual assumption of static routing and address the issue of dynamic load balancing. Specifically, we identify the class of load balancing policies which preserve insensitivity and characterize optimal strategies in some specific cases. Analytical results are illustrated numerically on a number of toy network examples.

Chaos in wavelength with a feedback tunable laser diode

Abstract: Wavelength is used to induce optical nonlinearities and to generate chaos from a multielectrode wavelength tunable laser diode. Chaotic modulation of wavelength ruled by a nonlinear differential difference equation is demonstrated. The method offers a high flexibility, which should open the way to simple chaotic systems with complicated nonlinear functions.