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Abstract:
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VLC is a promising communication technology in which visible light sources such as white
Light Emitting Diode (LED) can be utilized as a signal transmitter, the transmission medium is
spatial environment, and the appropriate photodiode can be used as a signal receiving
component. Despite of many potentially advantages such as: low cost, high speed, power
efficient, green communication as well as secure data communication, VLC must deal with the
difficulty of distributing LEDs for smooth handover in mobility scenarios and maximize both
illumination and communication aspects.
In this thesis, we recommend a method to calculate the overlapped area required for smooth
handover by sum of the area to make initiation handover occurs and additional area to handover
successfully. This thesis is also an efficient configuration method that based on calculated
overlapped areas combined with some system constraints such as: sufficient room illumination
level, Field of View angle and communication aspects, those are, High Signal to Noise Ratio
(SNR), high received power. By transmitting data at different frequencies for each LED lamp,
this configuration method can choose the best LED lamp layout setting that gives best
performance at both SNR and received power corresponding to that given parameters of room
dimension and mobile terminal. |