M-Point Combinatory for Parallel Transmission Image Sensor-Based Visible Light Communications

Proceedings Paper Computer Science, Information Systems

M-point Combinatory for Parallel Transmission Image Sensor-based Visible Light Communications

Takumi Sato et al.

Summary: An M-point combinatory modulation is proposed for parallel transmission image sensor-based visible light communication (VLC) in this paper. By selecting a certain number of transmitting regions and using the corresponding modulation method, the proposed method can achieve a higher bit transmission rate, improving the overall efficiency of the transmission system.

2022 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS (ICC WORKSHOPS) (2022)

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Article Engineering, Electrical & Electronic

Luminance Inversion for Parallel Transmission Visible Light Communication Between LCD and Image Sensor Camera

Kotomi Takahashi et al.

Summary: This paper introduces a new method called Luminance Inversion (LI) to compensate for the nonlinear characteristics between a liquid crystal display and an image sensor. By calculating the complement of the digital data fed to the driver of the pixel and transmitting the data and its luminance complement in two successive frames, the signal in the PT system can be linearized. Experimental results show that the PT system with LI can accommodate a larger number of bits without errors compared to the system without LI, indicating improved transmission accuracy.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2021)

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Article Engineering, Electrical & Electronic

Display Light Panel and Rolling Shutter Image Sensor Based Optical Camera Communication (OCC) Using Frame-Averaging Background Removal and Neural Network

Chi-Wai Chow et al.

Summary: Optical wireless communication has emerged as a complementary or alternative technology to radio-frequency communication. The OCC system based on LED light panel and rolling shutter image sensor can mitigate inter-symbol interference effectively.

JOURNAL OF LIGHTWAVE TECHNOLOGY (2021)

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Article Optics

PAM4 rolling-shutter demodulation using a pixel-per-symbol labeling neural network for optical camera communications

Yun-Shen Lin et al.

Summary: The study introduced a rolling shutter 4-level PAM4 demodulation scheme for OCC systems using pixel-per-symbol labeling neural network, achieving efficient demodulation of high-speed PAM4 signals in the rolling shutter OCC pattern.

OPTICS EXPRESS (2021)

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Proceedings Paper Engineering, Electrical & Electronic