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

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 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 languageEnglish
Pages (from-to)4670-4673
Number of pages4
JournalOptics Letters
Volume46
Issue number18
DOIs
Publication statusPublished - 15 Sep 2021

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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