Open AccessMulti-user high-speed QAM-OFDMA visible light communication system using a 75-µm single layer quantum dot micro-LED
Author(s) -
Zixian Wei,
Li Zhang,
Lei Wang,
Chien-Ju Chen,
Zhaoming Wang,
Kai-Chia Chen,
MengChyi Wu,
Yuhan Dong,
Lai Wang,
Yi Luo,
H. Y. Fu
Publication year - 2020
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.395419
Subject(s) - visible light communication , quadrature amplitude modulation , computer science , bit error rate , bandwidth (computing) , optics , optoelectronics , modulation (music) , electronic engineering , optical communication , qam , quantum dot , light emitting diode , materials science , physics , telecommunications , channel (broadcasting) , engineering , acoustics
Next-generation visible light communication (VLC) is envisioned to evolve into a high-speed and multi-user system. In this work, a 75-µm single layer quantum dot (QD) micro-LED was fabricated, packaged and used to experimentally demonstrate a 3-meter QAM-OFDMA VLC system affording multiple users with a 1.06-GHz modulation bandwidth. The OFDMA system realized data rates of 1.2 Gbps and 750 Mbps with a BER of 0 and 3.6×10 -3 for two independent users with a 1:1 bandwidth ratio, respectively. Additional sub-carrier allocation strategies and scenarios of 2∼6 users have been further evaluated, and all proposed strategies reach the sum-rate of beyond 1.41 Gbps while satisfying the forward error correction (FEC) criteria.