AC-power-signal-biased LED modulation method for ubiquitous visible light communication

Author

Liu, Y.F. ; Lai, C.W. ; Chow, C.W. ; Yeh, C.H.

Author_Institution

Inst. of Electro-Opt. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2012

fDate

19-21 April 2012

Firstpage

27

Lastpage

29

Abstract

We propose and demonstrate an AC-power-signal-biased light-emitting-diode (LED) modulation. To minimize the signal distortion, the message signal is up-converted to a carrier of 400 KHz and 60 Hz AC-power signal are combined using our developed bias tee circuit. Measurement result shows a bit error rate (BER) below 10^-8 at a transmission distance of 2 m. This technique is energy-efficient and compatible with AC LED, since AC to DC converter is not needed.

Keywords

electro-optical modulation; light emitting diodes; optical communication equipment; optical links; AC power signal biased LED modulation method; bias tee circuit; distance 2 m; frequency 60 Hz; light emitting diode modulation; signal distortion; ubiquitous visible light communication; Bit error rate; Light emitting diodes; Modulation; OFDM; Optical distortion; Optical fiber communication; Synchronization; Free-space optical communication; Modulation; On-Off Keying; Optical communications; Synchronization; Visible Light Communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Optical Communications Conference (WOCC), 2012 21st Annual

Conference_Location

Kaohsiung

Print_ISBN

978-1-4673-0940-0

Type

conf

DOI

10.1109/WOCC.2012.6198194

Filename

6198194