室内可见光ofdm通信系统调光控制技术

作者姓名：基于OFDM的室内可见光通信系统调光控制技术ABSTRACTIn this paper,the indoor visible communication system of OFDM underdifferent application scenarios is studied,and various dimming controltechnologies are introduced,which are applied in the field of visible light incombination with OFDM technology.Aiming at the requirement of high speeddata transmission in visible light communication,OFDM technology isintroduced into visible light communication,and the application of unipolarOFDM system in visible light communication is studied according to thecorrelation characteristics of visible light communication to transmission signalpolarity.The working principle of visible light OFDM system is analyzed indetail,and the performance of several OFDM systems is analyzed and comparedfrom multiple angles.In order to meet the dual requirements of visible lightcommunication for communication and lighting,this paper studies the systemperformance and dimming performance of dimming control technology used inoptical OFDM system,and puts forward the dimming control scheme of opticalOFDM system which is most suitable for indoor visible light communication.The results were found.More in line with the concept of energy-saving greenlighting indoor VLC high-speed data transmission dimming control scheme.The innovative work of this paper is to apply the dimming control technologyof visible light communication system to the U-OFDM system which has notbeen reported at home and abroad.In this paper,a more effectiveZACO-OFDM system is proposed to be used as a OFDM transmission systemin the field of indoor visible light.Practice has proved that the system canimprove the power efficiency of the system and save energy without sacrificingthe reliability of the system.