The paper SmartLight: Light-weight 3D Indoor Localization Using a Single LED Lamp, Liu, Song and He, Tian received the Best Paper Awards of the ACM Sensys conference that took place in Delft, Netherlands from November 6th to 9th.
The authors introduce SmartLight, a novel approach of VLC based 3D indoor localization using a only one ceiling LED. With a single modified LED lamp, the system is capable of localizing a large number of light sensors in a room. They exploit the light splitting properties of convex lens to create an one-to-one mapping between a location and the set of orthogonal digital light signals receivable at that location. They conduct experimental evaluations with a 60hz projector showing that SmartLight achieves average localization around 10cm and 90 percentile error of 50cm.
SmartLight testbed using a 60Hz projector