Title: Plugo: a VLC Systematic Perspective of Large-scale Indoor Localization,
Abstract: Indoor localization based on Visible Light Communication (VLC) has been in
favor with both the academia and industry for years. In this paper, we present
a prototyping photodiode-based VLC system towards large-scale localization.
Specially, we give in-depth analysis of the design constraints and
considerations for large-scale indoor localization research. After that we
identify the key enablers for such systems: 1) distributed architecture, 2)
one-way communication, and 3) random multiple access. Accordingly, we propose
Plugo -- a photodiode-based VLC system conforming to the aforementioned
criteria. We present a compact design of the VLC-compatible LED bulbs featuring
plug-and-go use-cases. The basic framed slotted Additive Links On-line Hawaii
Area (ALOHA) is exploited to achieve random multiple access over the shared
optical medium. We show its effectiveness in beacon broadcasting by
experiments, and further demonstrate its scalability to large-scale scenarios
through simulations. Finally, preliminary localization experiments are
conducted using fingerprinting-based methods in a customized testbed, achieving
an average accuracy of 0.14 m along with a 90-percentile accuracy of 0.33 m.