8.75 Gbps visible light communication link using an artificial neural network equalizer and a single-pixel blue micro-LED

Zixian Wei; Zhongxu Liu; Xin Liu; Lei Wang; Lai Wang; Changyuan Yu; H. Y. Fu

doi:10.1364/OL.437632

8.75 Gbps visible light communication link using an artificial neural network equalizer and a single-pixel blue micro-LED

Zixian Wei, Zhongxu Liu, Xin Liu, Lei Wang, Lai Wang, Changyuan Yu, H. Y. Fu

The Hong Kong Polytechnic University

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

15 Citations (Scopus)

Abstract

Visible light communication (VLC) beyond 10 Gbps is an important characteristic that can support the future 6 G high-capacity requirements. On the one hand, in order to break the electro-optics (E-O) bandwidth limitation of the light-emitting diodes (LEDs), we fabricated two high-bandwidth (>gigahertz) single wetting layer micro- LEDs with 50 and 75 μmactive regions.On the other hand, for mitigating the nonlinear effects of the VLC system, an artificial neural network equalizer is designed and implemented in offline digital signal processing. Both efforts lead to a breakthrough of data rates at a single VLC link. Using quadrature phase shift keying orthogonal frequency division multiplexing, the data rate of a 1.025GHzVLClink based on a 75 μm micro-LED can reach 8.75 Gbps with a bit-error-ratio (BER) of 2.73x10-3. In addition, the E-O characteristics and communication performances of micro- LED with two diameters are compared and discussed. To the best of our knowledge, the data rate of 8.75 Gbps is the highest record of the VLC link based on a single-pixel blue micro-LED with a BER within the forward error correction citation of 3.8x10-3.

Original language	English
Pages (from-to)	4670-4673
Number of pages	4
Journal	Optics Letters
Volume	46
Issue number	18
DOIs	https://doi.org/10.1364/OL.437632
Publication status	Published - 15 Sept 2021

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OL.437632

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title = "8.75 Gbps visible light communication link using an artificial neural network equalizer and a single-pixel blue micro-LED",

abstract = "Visible light communication (VLC) beyond 10 Gbps is an important characteristic that can support the future 6 G high-capacity requirements. On the one hand, in order to break the electro-optics (E-O) bandwidth limitation of the light-emitting diodes (LEDs), we fabricated two high-bandwidth (>gigahertz) single wetting layer micro- LEDs with 50 and 75 μmactive regions.On the other hand, for mitigating the nonlinear effects of the VLC system, an artificial neural network equalizer is designed and implemented in offline digital signal processing. Both efforts lead to a breakthrough of data rates at a single VLC link. Using quadrature phase shift keying orthogonal frequency division multiplexing, the data rate of a 1.025GHzVLClink based on a 75 μm micro-LED can reach 8.75 Gbps with a bit-error-ratio (BER) of 2.73x10-3. In addition, the E-O characteristics and communication performances of micro- LED with two diameters are compared and discussed. To the best of our knowledge, the data rate of 8.75 Gbps is the highest record of the VLC link based on a single-pixel blue micro-LED with a BER within the forward error correction citation of 3.8x10-3.",

author = "Zixian Wei and Zhongxu Liu and Xin Liu and Lei Wang and Lai Wang and Changyuan Yu and Fu, {H. Y.}",

note = "Funding Information: Funding. National Key Research and Development Program of China (2016YFB0401803); National Natural Science Foundation of China (61822404, 61974080); Science, Technology and Innovation Commission of Shenzhen Municipality (JCYJ20180507183815699, WDZC20200820160650001); Guangdong Basic and Applied Basic Research Foundation (2021A1515011450); Hong Kong Research Grants Council (GRF15212720). Publisher Copyright: {\textcopyright}2021 Optical Society of America.",

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AU - Wei, Zixian

AU - Liu, Zhongxu

AU - Liu, Xin

AU - Wang, Lei

AU - Wang, Lai

AU - Yu, Changyuan

AU - Fu, H. Y.

N1 - Funding Information: Funding. National Key Research and Development Program of China (2016YFB0401803); National Natural Science Foundation of China (61822404, 61974080); Science, Technology and Innovation Commission of Shenzhen Municipality (JCYJ20180507183815699, WDZC20200820160650001); Guangdong Basic and Applied Basic Research Foundation (2021A1515011450); Hong Kong Research Grants Council (GRF15212720). Publisher Copyright: ©2021 Optical Society of America.

PY - 2021/9/15

Y1 - 2021/9/15

N2 - Visible light communication (VLC) beyond 10 Gbps is an important characteristic that can support the future 6 G high-capacity requirements. On the one hand, in order to break the electro-optics (E-O) bandwidth limitation of the light-emitting diodes (LEDs), we fabricated two high-bandwidth (>gigahertz) single wetting layer micro- LEDs with 50 and 75 μmactive regions.On the other hand, for mitigating the nonlinear effects of the VLC system, an artificial neural network equalizer is designed and implemented in offline digital signal processing. Both efforts lead to a breakthrough of data rates at a single VLC link. Using quadrature phase shift keying orthogonal frequency division multiplexing, the data rate of a 1.025GHzVLClink based on a 75 μm micro-LED can reach 8.75 Gbps with a bit-error-ratio (BER) of 2.73x10-3. In addition, the E-O characteristics and communication performances of micro- LED with two diameters are compared and discussed. To the best of our knowledge, the data rate of 8.75 Gbps is the highest record of the VLC link based on a single-pixel blue micro-LED with a BER within the forward error correction citation of 3.8x10-3.

AB - Visible light communication (VLC) beyond 10 Gbps is an important characteristic that can support the future 6 G high-capacity requirements. On the one hand, in order to break the electro-optics (E-O) bandwidth limitation of the light-emitting diodes (LEDs), we fabricated two high-bandwidth (>gigahertz) single wetting layer micro- LEDs with 50 and 75 μmactive regions.On the other hand, for mitigating the nonlinear effects of the VLC system, an artificial neural network equalizer is designed and implemented in offline digital signal processing. Both efforts lead to a breakthrough of data rates at a single VLC link. Using quadrature phase shift keying orthogonal frequency division multiplexing, the data rate of a 1.025GHzVLClink based on a 75 μm micro-LED can reach 8.75 Gbps with a bit-error-ratio (BER) of 2.73x10-3. In addition, the E-O characteristics and communication performances of micro- LED with two diameters are compared and discussed. To the best of our knowledge, the data rate of 8.75 Gbps is the highest record of the VLC link based on a single-pixel blue micro-LED with a BER within the forward error correction citation of 3.8x10-3.

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8.75 Gbps visible light communication link using an artificial neural network equalizer and a single-pixel blue micro-LED

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