Realization of OFDM modulation and demodulation for visible light communication based on FPGA  

作　　者：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 吴春晖;高宗余;李洪磊;陈雄斌;毛旭瑞;路慧敏;王建萍;何林;崔世钢;陈弘达(Institute of Semiconductors,Chinese Academic of Sciences;School of Computer and Communication Engineering,University of Science and Technology Beijing;School of Automation and Electrical Engineering,Tianjin University of Technology and Education)

机构地区：[1]Institute of Semiconductors, Chinese Academic of Sciences, Beijing 100083, China [2]School of Computer and Communication Engineering, University of Science and Technology Beijing, Beijing 100083, China [3]School of Automation and Electrical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China

出　　处：《Optoelectronics Letters》2017年第1期58-62,共5页光电子快报（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(863 Program)(No.2015AA033303);the National Key Basic Research Program of China(973 program)(No.2013CB329204);the National Nature Science Foundation of China(Nos.61178051,61321063 and 61335010);the Science and Technology Project of Guangdong Province in China(No.2014B010120004)

摘　　要：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.

关 键 词：demodulation visible multiplexing programmable equalization hardware receiver utilizing verify transmitter 

分 类 号：TN929.1[电子电信—通信与信息系统]