Ray Tracing Based Channel Modeling for Visible Light Communications
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abstract
In this paper, we characterize visible light communication channels through Zemax13 software. In our approach, we create a three dimensional indoor environment with specified dimensions in Zemax and integrate the lighting source (i.e., LED). Using the ray tracing features of Zemax, we compute the received optical power and the delays of direct/indirect rays. This information is then imported into Matlab and the corresponding channel impulse response (CIR) for that environment is obtained through proper normalizations. Following this methodology, we present CIRs for a number of rooms with different sizes assuming different transmitter/receiver locations and quantify channel parameters such as mean excess delay, RMS delay spread and DC gain. 2014 IEEE.
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2014 22nd Signal Processing and Communications Applications Conference (SIU)
