Overcoming bandwidth limitation of light‐emitting diode in visible light communication using differential pulse amplitude modulation

Se‐Hoon Yang; Do‐Hoon Kwon; Sung‐Jin Kim; Sang‐Kook Han

doi:10.1117/1.OE.54.12.126102

8 December 2015 Overcoming bandwidth limitation of light‐emitting diode in visible light communication using differential pulse amplitude modulation

Se‐Hoon Yang, Do‐Hoon Kwon, Sung‐Jin Kim, Sang‐Kook Han

Author Affiliations +

Optical Engineering, Vol. 54, Issue 12, 126102 (December 2015). https://doi.org/10.1117/1.OE.54.12.126102

Abstract

A modulation format of differential pulse amplitude modulation in visible light communication using a single transmitter module composed of multiple semiconductor light‐emitting diode (LED) chips is proposed and experimentally demonstrated. Precoded different nonreturn‐zero on–off‐keying signals were assigned to each LED chip, and linearly overlapped signals were detected by a single photodiode. In this demonstration, pre‐equalization and optical filtering were applied to compensate the modulation bandwidth limitation and nonlinearity of the light source. Data rate up to 200 Mbit/s with less than 7.8×10−⁵ bit error rate was verified by experiment using the proposed modulation method.

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Se‐Hoon Yang, Do‐Hoon Kwon, Sung‐Jin Kim, and Sang‐Kook Han "Overcoming bandwidth limitation of light‐emitting diode in visible light communication using differential pulse amplitude modulation," Optical Engineering 54(12), 126102 (8 December 2015). https://doi.org/10.1117/1.OE.54.12.126102

Published: 8 December 2015

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