Title :
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
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;
Conference_Titel :
Wireless and Optical Communications Conference (WOCC), 2012 21st Annual
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4673-0940-0
DOI :
10.1109/WOCC.2012.6198194
