With the spreading of high power LED lighting fixtures, there is a growing interest in communication schemes that use Visible Light Communication (VLC). Main advantages of this method include the lack of interference with electromagnetic signals, regulation-free spectral domain, eavesdropping-safe channel, no medical risks and, most importantly, multi-functionality. This paper details a possible solution for indoor positioning systems, where the information is transmitted by modulated light, and the signals are demodulated and decoded by a smartphone or tablet that is equipped with a CMOS camera and sufficiently powerful hardware to perform simple image processing algorithms. My work mainly focuses on the modulation method and the data decoding.
A kutatási beszámoló letölthető innen (PDF)
Zsolczai Viktor, MSc student, Budapesti Műszaki és Gazdaságtudományi Egyetem, zsolczai.viktor@gmail.com
2015 március 1.