Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link

Galal, Mariam, Ng, Wai Pang, Binns, Richard and Abd El Aziz, Ahmed (2020) Experimental Characterization of RGB LED Transceiver in Low-Complexity LED-to-LED Link. Sensors, 20 (20). p. 5754. ISSN 1424-8220

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Official URL: https://doi.org/10.3390/s20205754

Abstract

This paper proposes a low-complexity and energy-efficient light emitting diode (LED)-to-LED communication system for Internet of Things (IoT) devices with data rates up to 200 kbps over an error-free transmission distance up to 7 cm. The system is based on off-the-shelf red-green-blue (RGB) LEDs, of which the red sub-LED is employed as photodetector in photovoltaic mode while the green sub-LED is the transmitter. The LED photodetector is characterized in the terms of its noise characteristics and its response to the light intensity. The system performance is then analysed in terms of bandwidth, bit error rate (BER) and the signal to noise ratio (SNR). A matched filter is proposed, which optimises the performance and increases the error-free distance.

Item Type: Article
Uncontrolled Keywords: LED photodetector; LED-to-LED communication; BER; matched filter; visible light communication (VLC)
Subjects: H600 Electronic and Electrical Engineering
H800 Chemical, Process and Energy Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 12 Oct 2020 12:01
Last Modified: 12 Oct 2020 12:15
URI: http://nrl.northumbria.ac.uk/id/eprint/44479

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