標題: QPSK Modulation for AC-Power-Signal-Biased Visible Light Communication System
作者: Liu, Yu-Feng
Yeh, Chien-Hung
Chow, Chi-Wai
Liu, Yang
光電工程學系
Department of Photonics
關鍵字: Wireless;Visible Light Communication;Light emitting diode (LED);AC-LED;QPSK
公開日期: 2013
摘要: With the integration of light emitting diode (LED), visible light communication (VLC) can provide wireless communication link using the lightning system. Due to the consideration of power efficiency, AC-LED has the design of reducing energy waste with alternating current from the power outlet. In this work, we propose an AC-power-signal-biased system that provides communication on both DC-LED and AC-LED. The bias circuit is designed to combine AC-power signal and the message signal with QPSK format. This driving scheme needs no AC-to-DC converters and it is suitable for driving AC LED. Synchronization is completed to avoid threshold effect of LED.
URI: http://hdl.handle.net/11536/21976
http://dx.doi.org/10.1117/12.2002030
ISBN: 978-0-8194-9414-6
ISSN: 0277-786X
DOI: 10.1117/12.2002030
期刊: BROADBAND ACCESS COMMUNICATION TECHNOLOGIES VII
Volume: 8645
Appears in Collections:Conferences Paper


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