Open AccessASK-based spatial multiplexing RGB scheme using symbol-dependent self-interference for detection
Author(s) -
Stefano Pergoloni,
Andrea Petroni,
Thai-Chien Bui,
Gaetano Scarano,
Roberto Cusani,
Mauro Biagi
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.015028
Subject(s) - photodiode , optics , interference (communication) , light emitting diode , visible light communication , rgb color model , computer science , optical wireless , physics , keying , phase shift keying , optoelectronics , wireless , telecommunications , bit error rate , channel (broadcasting) , artificial intelligence
We propose a vsible light communication scheme utilizing red, green and blue light-emitting diodes (LEDs) and three color-tuned photodiodes. Amplitude shift keying modulation is considered, and its effect on light emission in terms of flickering, dimming, and color rendering is discussed. The presence of interference at each photodiode generated by the other two colors is used to improve detection since interference is symbol-dependent. Moreover, the capability of the photodiodes to follow the LEDs speed is considered by analyzing the possibility of equalizing the received signal, and also self-interference mitigation is proposed. The system performance is evaluated both with computer simulations and tests on an Arduino board implementation.