Investigation into Using Compensation for the Nonlinear Effects of the Output of LEDs in Visible Light Communication Systems

Burton, Andrew, Ghassemlooy, Fary, Zvanovec, Stanislav, Haigh, Hoa Le and Li, Xicong (2019) Investigation into Using Compensation for the Nonlinear Effects of the Output of LEDs in Visible Light Communication Systems. In: The 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC2019): 27-28 April, Shahid Beheshti University, Tehran, Iran. IEEE, Piscataway, NJ, pp. 80-84. ISBN 9781728137681, 9781728137674

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Official URL: https://doi.org/10.1109/wacowc.2019.8770197

Abstract

This paper investigate the effects of the nonlinear output power to the input current transfer function of a light emitting diode (LED) used as the transmitter in visible light communication systems, and proposes a compensation technique to mitigate the non-linearity. Using an off the shelf red, amber, blue, green (RAGB) LED the nonlinear transfer function is measured and then compensated for. The results show that, for the green LED, which has the highest degree of nonlinearity, an improvement in the received error vector magnitude (EVM)of almost 7 dB can be achieved. We also show that, the improvement in EVM over the uncompensated scheme decreases with increased LED linearity.

Item Type: Book Section
Uncontrolled Keywords: LED, nonlinear, compensation, visible light communications, mCAP, EVM
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 29 Jul 2019 15:28
Last Modified: 11 Oct 2019 10:10
URI: http://nrl.northumbria.ac.uk/id/eprint/40192

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