| WU Chun-hui,GAO Zong-yu,LI Hong-lei,CHEN Xiong-bin,MAO Xu-rui,LU Hui-min,WANG Jian-ping,HE Lin,CUI Shi-gang,CHEN Hong-da.Realization of OFDM modulation and demodulation for visible light communication based on FPGA[J].Optoelectronics Letters,2017,13(1):58-62 |
| Realization of OFDM modulation and demodulation for visible light communication based on FPGA |
| Author Name | Affiliation | | WU Chun-hui | Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China | | GAO Zong-yu | Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China | | LI Hong-lei | Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China | | CHEN Xiong-bin | Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China | | MAO Xu-rui | Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China | | LU Hui-min | School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China | | WANG Jian-ping | School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China | | HE Lin | School of Automation and Electrical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China | | CUI Shi-gang | School of Automation and Electrical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China | | CHEN Hong-da | Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China |
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| Abstract: |
| In order to ensure stable, correct and real-time high-speed transmission of indoor visible light communication (VLC), the key modulation and demodulation technologies of orthogonal frequency division multiplexing (OFDM) are studied in this paper. The time-domain synchronization, frequency synchronization and channel equalization of receiver are analyzed and optimized by utilizing short and long training preamble. Moreover, field programmable gate array (FPGA) development board (Xilinx Kintex-7) and Verilog hardware description language are used to realize the design of proposed OFDM-VLC system. Simulation and experiment both verify the feasibility of the hardware designs of this system. The proposed OFDM-based VLC system can process signal in real-time, which can be used in actual VLC application systems. |
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