Real-Time Video Transmission of Visible Light Communication Based on LED
- 1 School of Information and Communication, Guilin University of Electronic Technology, Guilin, China
- 2 School of Information and Communication, Guilin University of Electronic Technology, Guilin, China
- 3 School of Information and Communication, Guilin University of Electronic Technology, Guilin, China
- 4 School of Information and Communication, Guilin University of Electronic Technology, Guilin, China
Abstract
In order to realize the video image transmission and the excellent lighting function of the visible light communication system, a LED-based visible light communication method and system is proposed. Based on the field programmable gate array (FPGA) hardware, the RS channel coding is applied to the visible light communication system. A pulse position decision algorithm is proposed, which is applied to the receiver of the visible light communication system to meet the error-free decision of the signal. The design of the system is based on the analog-to-digital conversion circuit, which provides a large signal dynamic range for the pulse position decision algorithm, and designs the LED driver based on the bias circuit to realize the fast broadband modulation of the signal. The test results show that the combined application of pulse position decision algorithm and Reed-Solomon codec can reduce the error of system signal and meet the real-time and reliable transmission of signal. The system can display the received video in real time from the receiver, and the whole system communication distance up to 5 m.
- Xu, X., Chen, M.-S. and Tang, L.-L. (2015) Experimental Research on Visible Light Communication Based on RGB LED. Ad-vances in Lasers and Optoelectronics, 52, 77-83.
- Wang, H. and Cai, X.-P. (2014) Research Process of Visible Light Communication Based on LED. Semiconductor Optoelectronics, 35, 17-25.
- Vucic, J., Kottke, C., Habel, K., et al. (2011) 803 Mbit/s Visible Light WDM Link Based on DMT Modulation of a Single RGB LED Luminary. Conference on Optical Finer Communication (OFC)/National Fiber Optical Engineers Conference (NFO EC), 2011, OWB6.
- Wu, W.-X. (2014) Design of Image Acquisition and Processing System Based on FPGA. South China University of Technology.
- Wang, J. (2006) Performance Analysis of Wireless Optical Communication System Based on PPM and RS Codes. Xidian University, Xi’an.
- Modepalli, K. and Parsa, L. (2015) Dual-Purpose Offline LED Driver for Illumination and Visible Light Commu-nication. IEEE Transactions on Industry Applications, 51, 406-419. https://doi.org/10.1109/TIA.2014.2330066
- Engelbrecht, R., et al. (2014) Large-Signal RF Circuit Model Foe a High-Power Laser Diode Module. IEEE Photonics Technology Letters, 26, 761-764. https://doi.org/10.1109/LPT.2014.2304299
- Zeng, Y.-Q. (2012) Research and Implementation of Reed-Solomon Soft Decision Decoding Technology. Fudan University, Fudan.
- Xu, C.-J. (2011) Decoding Algorithm of RS Code and Its Im-plementation. Xidian University.