Vieira, ManuelaVieira, ManuelLouro, PaulaFantoni, AlessandroVieira, Pedro2019-10-162019-10-162019VIEIRA, Manuela; [et al] – Bi-directional VLC LED-assisted navigation system for large indoor environments. In Proceedings of SPIE, AOP 2019 – IV. International Conference on Applications of Optics and Photonics Lisbon, Portugal: SPIE, 2019. ISSN 0277-786X. Vol. 11207. Pp. 112070D-1- 112070D-60277-786Xhttp://hdl.handle.net/10400.21/10570Este trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2018 do Instituto Politécnico de Lisboa. Código de referência IPL/2018/LAN4CC_ISELIn this paper, a LED-assisted positioning and navigation VLC system is proposed. A VLC scenario for large environments is stablished, the emitters and receivers are characterized and the communication protocol presented. Different layouts are analyzed. Square and hexagonal meshes are tested and a 2D localization design, demonstrated by a prototype implementation, is presented. The key differences between both topologies are discussed. For both, the transmitted information, indoor position, motion direction as well as bi-directional communication are determined. The results showed that the LED-aided VLC navigation system make possible to determine the position of a mobile target inside the network, to infer the travel direction along the time and to interact with information received.engVisible light communicationIndoor positioningAdvertisingOptical sensorsLarge indoor environmentsSiC technologyTransmitter/receiverMultiplexing/demultiplexing techniquesconference object10.1117/12.2526504