Beam control for indoor FSO and dynamic dual-use VLC lighting systems
B. Rahaim Michael(), Morrison Jessica(), D. C. Little Thomas()

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Figure 14. Signal strength depicting potential coverage for a 3 × 3 grid of transmitters with half angle of 15.4°. (a)normal; (b) directional W; (c) rotated Tx W; (d) rotated Tx &Rx W