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Optical Engineering

Overcoming bandwidth limitation of light‐emitting diode in visible light communication using differential pulse amplitude modulation
Author(s): Se‐Hoon Yang; Do‐Hoon Kwon; Sung‐Jin Kim; Sang‐Kook Han
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Paper 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 7.8×105 bit error rate was verified by experiment using the proposed modulation method.

Paper Details

Date Published: 8 December 2015
PDF: 6 pages
Opt. Eng. 54(12) 126102 doi: 10.1117/1.OE.54.12.126102
Published in: Optical Engineering Volume 54, Issue 12
Show Author Affiliations
Se‐Hoon Yang, Yonsei Univ. (Republic of Korea)
Do‐Hoon Kwon, Yonsei Univ. (Republic of Korea)
Sung‐Jin Kim, Yonsei Univ. (Republic of Korea)
Sang‐Kook Han, Yonsei Univ. (Republic of Korea)

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