Dimmable VLC demonstration systems based on LED

Hyeon-Cheol Kim; Seong-Su Lee; Sung-Yoon Jung

doi:10.1117/12.999800

5 December 2012 Dimmable VLC demonstration systems based on LED

Hyeon-Cheol Kim, Seong-Su Lee, Sung-Yoon Jung

Proceedings Volume 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II; 85620F (2012) https://doi.org/10.1117/12.999800
Event: Photonics Asia, 2012, Beijing, China

Abstract

Recently, there have been many attempts to converge LED with IT technology. Among them, Visible Light Communication (VLC), which is the convergence of illumination and communication, has emerged. In VLC system, both lighting and communication can be simultaneously implemented. By considering both terms together, VPPM(Variable Pulse Position Modulation) modulation scheme is proposed by the IEEE 802.15.7 standard group. It uses binary PPM (Pulse Position Modulation) for communication and PWM (Pulse Width Modulation) for dimming control. In this paper, we introduce the implementation of VLC demonstration system based on VPPM modulation scheme. By changing the pulse width of VPPM signal, we can support 25%, 50% and 75% dimming. In addition, our VLC demonstration system provides a new power system using solar cell. By receiving the VPPM modulated visible light signal in the receiver end, we turn on the receiver power and start the system operation to decode the transmitted signal. By using ATmega128 8bit Micro Controller Unit (MCU) by ATMEL and Q3 XLamp XP-E LEDs of Cree, our system provides about 2kbps data rate with 2.5kHz optical rate in more than 30cm distance. By implementing DM S/W, we show the bit error rate (BER) and achievable data rate (ADR) of our demonstration system.

Citation Download Citation

Hyeon-Cheol Kim, Seong-Su Lee, and Sung-Yoon Jung "Dimmable VLC demonstration systems based on LED", Proc. SPIE 8562, Infrared, Millimeter-Wave, and Terahertz Technologies II, 85620F (5 December 2012); https://doi.org/10.1117/12.999800

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available