14 September 2011 Broadcast of four HD videos with LED ceiling lighting: optical-wireless MAC
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Abstract
The European project "hOME Gigabit Access Network" (OMEGA) targeted various wireless and wired solutions for 1 Gbit/s connectivity in Home Area Networks (HANs). One objective was to evaluate the suitability of optical wireless technologies in two spectral regions: visible light (visible-light communications - VLC) and near infrared (infrared communications - IRC). Several demonstrators have been built, all of them largely relying on overthe- shelf components. The demonstrators included a "wide-area" VLC broadcast link based on LED ceiling lighting and a laser-based high-data-rate "wide-area" IRC prototype. In this paper we discuss an adapted optical-wireless media-access-control (OWMAC) sublayer, which was developed and implemented during the project. It is suitable for both IRC and VLC. The VLC prototype is based on DMT signal processing and provides broadcasting at ~ 100 Mbit/s over an area of approximately 5 m2. The IRC prototype provides ~300 Mbit/s half-duplex communication over an area of approximately 30 m2. The IRC mesh network, composed of one base station and two terminals, is based on OOK modulation, multi-sector transceivers, and an ultra-fast sector switch. After a brief discussion about the design of the optical-wireless data link layer and the optical-wireless switch (OWS) card, we address the card development and implementation. We also present applications for the VLC and IRC prototypes and measurement results regarding the MAC layer.
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Olivier Bouchet, Olivier Bouchet, Pascal Porcon, Pascal Porcon, Eric Gueutier, Eric Gueutier, } "Broadcast of four HD videos with LED ceiling lighting: optical-wireless MAC", Proc. SPIE 8162, Free-Space and Atmospheric Laser Communications XI, 81620L (14 September 2011); doi: 10.1117/12.893419; https://doi.org/10.1117/12.893419
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