Research On MIMO Technology In Ultraviolet Communication System

The ultraviolet communication has been widely used in the field of military communication with advantages of good anti-wiretapping,strong anti-interference and good security.And It has been considered as an effective supplement to conventional wireless communication.Non-line-of-sight(NLOS)communications can be performed because of the atmospheric scattering to solar blind UV of 200-280nm.This paper introduces the MIMO technology widely used in wireless communication into the UV NLOS to study its impact on communication performance for communication system.The first chapter mainly introduces the technology features,the research achievements and the research status of UV communication both at home and abroad.And draw forth the necessity of the research and the research content of this article.The second chapter introduces the theoretical basis and communication model of UV NLOS,and the features of wireless channel,MIMO system principle and correlation technology.This chapter mainly focus on the space-time coding technology for UV communication.The third chapter describes the UV NLOS communication experimental platform,including the main components and related operating principle of hardware circuit module.Then we introduce the various modules of the design ideas and working principle in the FPGA development board.The forth chapter mainly introduces the transmitter and receiver-related parameters set of the UV NLOS communication system during the experiment procedure.Then we introduce data acquisition and data processing processes and methods for four communication schemes SISO,SIMO,MISO,MIMO,and SNR(signal to noise ratio)of the solving process.Five groups of experiments in different information transmission rate were conducted and were made a contrast with different communication schemes about SNR.We proved MIMO technology in UV NLOS communication system can improve communication performance.Finally,the fifth chapter reviews the whole paper,puts forward the UV NLOS communications research and development in the future.