\u00ab\u00a0Potential of Optical Wireless Technology in Addressing Spectrum Requirements in Future Smart environments\u00a0\u00bb<\/p>\n
Ali KHALIGHI Optical wireless communications (OWC) in the infrared and visible spectra have recently received particular attention due to their potential in providing very high-rate data transmission in various indoor and outdoor application scenarios. This seminar provides an overview on this transmission technology and the challenges in the deployment of such links. We start by briefly presenting the principles of free-space optical communications (FSO) in outdoor applications and reviewing their most important practical limitations. We then consider the emerging field of visible-light communications (VLC) and explain their potential in enabling wireless connectivity in indoor and underwater applications. For the former context (e.g. in smart home applications), the main challenge concerns the limited modulation bandwidth and dynamic range of the commercial LEDs, which are supposed to replace the traditional luminaries in the near future. In the underwater context, on the other hand, the main limitation arises from the high attenuation of the aquatic channel, which seriously affects the attainable transmission range. We discuss the other factors affecting the data transmission rate and the link robustness, and the existing implementation challenges.<\/p>\n * Le s\u00e9minaire g\u00e9n\u00e9ral (usuellement le 1er jeudi du mois) porte sur un sujet d’int\u00e9r\u00eat g\u00e9n\u00e9ral, couvrant alternativement les th\u00e9matiques du d\u00e9partement et au-del\u00e0. Il s’adresse aux doctorants, post-docs, chercheurs et enseignants-chercheurs et plus globalement toute personne que cela int\u00e9resse. Il est effectu\u00e9 par des chercheurs ext\u00e9rieurs ou par des chercheurs du d\u00e9partement. Il a pour objectif d’aborder les sujets propos\u00e9s sous un angle large, visant \u00e0 l’enrichissement de la culture scientifique de chacun au-del\u00e0 des domaines d’int\u00e9r\u00eat imm\u00e9diat. Les doctorants et jeunes chercheurs sont particuli\u00e8rement concern\u00e9s, l’ouverture d’esprit \u00e0 laquelle peuvent contribuer ces s\u00e9minaires \u00e9tant, vis-\u00e0-vis d’un futur recruteur, souvent au moins aussi importante que le travail de th\u00e8se proprement dit.<\/p>\n","protected":false},"excerpt":{"rendered":" \u00ab\u00a0Potential of Optical Wireless Technology in Addressing Spectrum Requirements in Future Smart environments\u00a0\u00bb Ali KHALIGHI Ecole Centrale Marseille & Institut Fresnel Jeudi 1er f\u00e9vrier, 14 H, T\u00e9l\u00e9com ParisTech, Amphi Emeraude, 46 rue Barrault, Paris 13 Optical wireless communications (OWC) in the infrared and visible spectra have recently received particular attention due to their potential in 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\nEcole Centrale Marseille & Institut Fresnel
\nJeudi 1er f\u00e9vrier, 14 H, T\u00e9l\u00e9com ParisTech, Amphi Emeraude, 46 rue Barrault, Paris 13<\/strong><\/p>\n
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