Abstract
One of the restrictions of Visible Light Communications (VLC) technology is related to its transmission range, which is short by nature. This short distance is imposed by the lighting range which barely reaches a couple of hundred meters. This has forced VLC to be applied in specific applications where the transmitting and receiving nodes are close enough to enable communication, in both outdoor and indoor environments. As a result, VLC has not been exploited as access system technology. In this paper, we propose an access communication system using VLC technology. Laser light (LL) sources, reputed for their long lighting range, are exploited for the outdoor access system while in indoor, light emitting diodes (LEDs) are used. The combination of indoor and outdoor is based on an amplify-and-forward (AF) strategy to reduce implementation cost. The overall channel frequency response is presented for varying transmitting parameters such as the outdoor attenuation coefficient, γ, the outdoor transmission distance, L, and the indoor reflection coefficient, ρ.
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