Experimental demonstration of non-line-of-sight visible light communication with different reflecting materials using a GaN-based micro-LED and modified IEEE 802.11ac

Lu, Zhijian and Tian, Pengfei and Fu, Houqiang and Montes, Jossue and Huang, Xuanqi and Chen, Hong and Zhang, Xiaodong and Liu, Xiaoyan and Liu, Ran and Zheng, Lirong and Zhou, Xiaolin and Gu, Erdan and Liu, Yi and Zhao, Yuji (2018) Experimental demonstration of non-line-of-sight visible light communication with different reflecting materials using a GaN-based micro-LED and modified IEEE 802.11ac. AIP Advances, 8 (10). 105017. ISSN 2158-3226 (https://doi.org/10.1063/1.5048942)

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Abstract

This paper gives an experimental demonstration of non-line-of-sight (NLOS) visible light communication (VLC) using a single 80 μm gallium nitride (GaN) based micro-light-emitting diode (micro-LED). This device shows a 3-dB electrical-to-optical modulation bandwidth of 92.7 MHz. IEEE 802.11ac modulation scheme with 80 MHz bandwidth, as an entry level of the fifth generation of Wi-Fi, was employed to use the micro-LED bandwidth efficiently. These practical techniques were successfully utilized to achieve a demonstration of line-of-sight (LOS) VLC at a speed of 433 Mbps and a bit error rate (BER) of 10-5 with a free space transmit distance 3.6 m. Besides this, we demonstrated directed NLOS VLC links based on mirror reflections with a data rate of 433 Mbps and a BER of 10-4. For non-directed NLOS VLC using a print paper as the reflection material, 16 QAM, 195 Mbps data rate, and a BER of 10-5 were achieved.

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