Lookup NU author(s): Dr Paul Haigh
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© 2019 IEEE.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.
Author(s): Burton A, Ghassemlooy Z, Zvanovec S, Haigh PA, Minh HL, Li X
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 2nd West Asian Colloquium on Optical Wireless Communications, WACOWC 2019
Year of Conference: 2019
Online publication date: 25/07/2019
Acceptance date: 02/04/2016
Publisher: Institute of Electrical and Electronics Engineers Inc.
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