Real-Time Multi-User Video Optical Wireless Transmission Based on a Parallel Micro-LEDs Bulb

Zixian Wei; Zhongxu Liu; Zhaoming Wang; Mutong Li; Chien Ju Chen; Meng Chyi Wu; Songping Mai; Faisal Nadeem Khan; Changyuan Yu; H. Y. Fu

doi:10.1109/JPHOT.2021.3075701

Real-Time Multi-User Video Optical Wireless Transmission Based on a Parallel Micro-LEDs Bulb

Zixian Wei, Zhongxu Liu, Zhaoming Wang, Mutong Li, Chien Ju Chen, Meng Chyi Wu, Songping Mai, Faisal Nadeem Khan, Changyuan Yu, H. Y. Fu

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

11 Citations (Scopus)

Abstract

In this work, we experimentally achieved a real-time video optical wireless transmission which can broadcast two users in different positions, simultaneously. Firstly, a single-pixel 50-μm micro-LED is designed and fabricated on a GaN-based wafer and then two micro-LED chips are connected as parallel form in a single bulb. The transceiver based on two FPGA boards is used to generate quadrature amplitude modulation-orthogonal frequency division multiplexed (QAM-OFDM) signals and measure the communication performance of the VLC system. The low-power micro-LEDs bulb emits 0.8 mW optical power through two optical paths at 20 mA driving current, and the modulation bandwidths for two users' access are 90 MHz and 73 MHz, respectively. In this two-user real-time video transmission system, the total data rate exceeds 105.54 Mbps without naked eye discernable distortion over 2-m free-space distance. Different from traditional point-to-point links, this work demonstrates the possibility of flexible high-speed multi-user real-time video optical wireless transmission based on a parallel micro-LEDs bulb.

Original language	English
Article number	9416731
Journal	IEEE Photonics Journal
Volume	13
Issue number	3
DOIs	https://doi.org/10.1109/JPHOT.2021.3075701
Publication status	Published - Jun 2021

Keywords

FPGA transceiver
multi-user communication
parallel micro-LEDs
Visible light communication (VLC)

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Electrical and Electronic Engineering

More information

10.1109/JPHOT.2021.3075701

http://hdl.handle.net/10397/107274

Cite this

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title = "Real-Time Multi-User Video Optical Wireless Transmission Based on a Parallel Micro-LEDs Bulb",

abstract = "In this work, we experimentally achieved a real-time video optical wireless transmission which can broadcast two users in different positions, simultaneously. Firstly, a single-pixel 50-μm micro-LED is designed and fabricated on a GaN-based wafer and then two micro-LED chips are connected as parallel form in a single bulb. The transceiver based on two FPGA boards is used to generate quadrature amplitude modulation-orthogonal frequency division multiplexed (QAM-OFDM) signals and measure the communication performance of the VLC system. The low-power micro-LEDs bulb emits 0.8 mW optical power through two optical paths at 20 mA driving current, and the modulation bandwidths for two users' access are 90 MHz and 73 MHz, respectively. In this two-user real-time video transmission system, the total data rate exceeds 105.54 Mbps without naked eye discernable distortion over 2-m free-space distance. Different from traditional point-to-point links, this work demonstrates the possibility of flexible high-speed multi-user real-time video optical wireless transmission based on a parallel micro-LEDs bulb. ",

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author = "Zixian Wei and Zhongxu Liu and Zhaoming Wang and Mutong Li and Chen, {Chien Ju} and Wu, {Meng Chyi} and Songping Mai and {Nadeem Khan}, Faisal and Changyuan Yu and Fu, {H. Y.}",

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AU - Chen, Chien Ju

AU - Wu, Meng Chyi

AU - Mai, Songping

AU - Nadeem Khan, Faisal

AU - Yu, Changyuan

AU - Fu, H. Y.

N1 - Funding Information: The authors wish to thank the support by the Shenzhen Science and Technology Innovation Commission (JCYJ20180507183815699) and Hong Kong Research Grants Council (GRF15212720). Publisher Copyright: © 2009-2012 IEEE.

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Real-Time Multi-User Video Optical Wireless Transmission Based on a Parallel Micro-LEDs Bulb

Abstract

Keywords

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