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.
Original language | English |
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Title of host publication | The 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC2019) |
Subtitle of host publication | 27-28 April, Shahid Beheshti University, Tehran, Iran |
Place of Publication | Piscataway, NJ |
Publisher | IEEE |
Pages | 80-84 |
ISBN (Electronic) | 9781728137674 |
ISBN (Print) | 9781728137681 |
DOIs | |
Publication status | E-pub ahead of print - 25 Jul 2019 |
Event | 2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC) - Tehran, Iran Duration: 27 Apr 2019 → 28 Apr 2019 |
Conference
Conference | 2019 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC) |
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Period | 27/04/19 → 28/04/19 |