Research on target information optics communications transmission characteristic and performance in multi-screens testing system

• Use discrete multi-tone modulation transmission method to set up transfer model.
• Analyzes the electro-optic and photoelectric conversion function of sender and receiver.
• Researches target information transmission performance and transfer function.
• Found information communication transmission link light intensity space distribution.
• Derives the SNR model of information transmission communication system.

To enhance the stability and reliability of multi-screens testing system, this paper studies multi-screens target optical information transmission link properties and performance in long-distance, sets up the discrete multi-tone modulation transmission model based on geometric model of laser multi-screens testing system and visible light information communication principle; analyzes the electro-optic and photoelectric conversion function of sender and receiver in target optical information communication system; researches target information transmission performance and transfer function of the generalized visible-light communication channel; found optical information communication transmission link light intensity space distribution model and distribution function; derives the SNR model of information transmission communication system. Through the calculation and experiment analysis, the results show that the transmission error rate increases with the increment of transmission rate in a certain channel modulation depth; when selecting the appropriate transmission rate, the bit error rate reach 0.01.