Overcoming bandwidth limitation of LED by using multilevel differential PAM in VLC

S. H. Yang, D. H. Kwon, S. K. Han

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

We propose a novel modulation and de-modulation method to reduce the complexity of transmitter and receiver which is named multilevel differential pulse amplitude modulation (MD-PAM). The proposed modulation scheme transmits different PAM signals with same amplitude and unit time delay using different multiple LED chips. Optical signals from each LED chips are superposed during through the optical wireless channel and directly detected at the single optical receiver. Received signal is demodulated using signal power difference which is changed by light intensity. As a result, we experimentally confirmed that 100-Mbit/s transmission was possible using two LED chips which have 25MHz modulation bandwidth, respectively.

Original languageEnglish
Title of host publicationPIERS 2015 Prague - Progress In Electromagnetics Research Symposium, Proceedings
PublisherElectromagnetics Academy
Pages1397-1401
Number of pages5
Volume2015-January
ISBN (Electronic)9781934142301
Publication statusPublished - 2015 Jan 1

Fingerprint

Pulse amplitude modulation
Light emitting diodes
Modulation
Bandwidth
Optical receivers
Transmitters
Time delay

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Yang, S. H., Kwon, D. H., & Han, S. K. (2015). Overcoming bandwidth limitation of LED by using multilevel differential PAM in VLC. In PIERS 2015 Prague - Progress In Electromagnetics Research Symposium, Proceedings (Vol. 2015-January, pp. 1397-1401). Electromagnetics Academy.
Yang, S. H. ; Kwon, D. H. ; Han, S. K. / Overcoming bandwidth limitation of LED by using multilevel differential PAM in VLC. PIERS 2015 Prague - Progress In Electromagnetics Research Symposium, Proceedings. Vol. 2015-January Electromagnetics Academy, 2015. pp. 1397-1401
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Yang, SH, Kwon, DH & Han, SK 2015, Overcoming bandwidth limitation of LED by using multilevel differential PAM in VLC. in PIERS 2015 Prague - Progress In Electromagnetics Research Symposium, Proceedings. vol. 2015-January, Electromagnetics Academy, pp. 1397-1401.

Overcoming bandwidth limitation of LED by using multilevel differential PAM in VLC. / Yang, S. H.; Kwon, D. H.; Han, S. K.

PIERS 2015 Prague - Progress In Electromagnetics Research Symposium, Proceedings. Vol. 2015-January Electromagnetics Academy, 2015. p. 1397-1401.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Yang SH, Kwon DH, Han SK. Overcoming bandwidth limitation of LED by using multilevel differential PAM in VLC. In PIERS 2015 Prague - Progress In Electromagnetics Research Symposium, Proceedings. Vol. 2015-January. Electromagnetics Academy. 2015. p. 1397-1401