Positioning and Space-Division Multiple Access Enabled by Structured Illumination With Light-Emitting Diodes

摘要

Self-location of devices in an illuminated area can be realized using light-emitting diode array luminaires with integrated electronic smart control. These smart lighting sources project a rapidly displayed time sequence of spatial illumination patterns onto the scene, which enables positioning on a millisecond timescale. We demonstrate a prototype system based on a CMOS-driven 16 × 16 array of GaN light-emitting diodes and its application to space-division multiple access in a Gb/s optical wireless network.