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

Research output: Contribution to journalArticle

3 Citations (Scopus)


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.

Original languageEnglish
Article number126102
JournalOptical Engineering
Issue number12
Publication statusPublished - 2015 Dec 1


All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)

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