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In this paper, we explore different alternatives of solving the challenging problem of providing mobility for visually impaired people using wireless optical communications. This matter falls under the universal design paradigm, referred to produce and design inherently accessible buildings, products and environments, especially suitable for older or handicapped people. This a growing market as life...
In this paper, we explore the indoor real-time location problem, with a new approach based on combining optical and ultrasonic sensors in order to have a TDoA enough for an easy calculation. An ALOHA protocol will be also implemented so as to avoid collision problems. We are using illumination LED lamps with known positions over a room as a source of data to acquire the real position of a device....
In this paper, the use of visible light communications (VLC) technologies for providing data networking for passengers during flight is explored. An uplink channel based on infrared is also studied. The potential capabilities of this optical access technique are examined.
In this paper we describe the implementation of a prototype of an optical wireless system based on visible white LED lamps, which allows a video broadcasting to reach a bit rate of 2 Mbps. This technology is usually called VLC or Visible Light Communications and presents several advantages as the robustness against EM interference, safety for human eye and security against undesired network access...
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