PROJECT TITLE :
20 Gb/s Mobile Indoor Visible Light Communication System Employing Beam Steering and Computer Generated Holograms
Visible light-weight communication (VLC) systems have typically operated at data rates below ten Gb/s and operation at this information rate was shown to be feasible by using laser diodes (LDs), imaging receivers and delay adaptation techniques (DAT imaging LDs-VLC). But, higher data rates, beyond ten Gb/s, are challenging due to the low signal to noise ratio (SNR) and inter symbol interference (ISI). During this paper, for the primary time, to the simplest of our data, we have a tendency to propose, style, and evaluate a VLC system that employs beam steering (of part of the VLC beam) using adaptive finite vocabulary of holograms at the side of an imaging receiver and a DAT to reinforce SNR and to mitigate the impact of ISI at high knowledge rates (20 Gb/s). An algorithm was used to estimate the receiver location, therefore that part of the white light can be directed towards a desired target (receiver) using beam steering to enhance SNR. Simulation results of our location estimation algorithm (LEA) indicated that the desired time to estimate the position of the VLC receiver is typically inside 224 ms in our system and environment. A finite vocabulary of stored holograms is introduced to reduce the computation time required by LEA to spot the most effective location to steer the beam to the receiver location. The beam steering approach improved the SNR of the fully adaptive VLC system by 15 dB at high data rates (twenty Gb/s) over the DAT imaging LDs-VLC system within the worst-case situation. Additionally, we tend to examined our new proposed system during a terribly harsh surroundings with mobility. The results showed that our proposed VLC system has sturdy robustness against shadowing, signal blockage, and mobility.
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