Ultraviolet light diversity reception system and method

Abstract

The invention discloses an ultraviolet light diversity reception system and a method. The ultraviolet light diversity reception system comprises a device for emitting ultraviolet light-emitting diode (LED) light, devices for receiving ultraviolet signals, a signal conversion module and a signal processing circuit, wherein the signal conversion module is connected with the devices for receiving ultraviolet signals, and the signal processing circuit is connected with the conversion module and used for processing signals. According to the ultraviolet light diversity reception system and the method, a plurality of devices for receiving ultraviolet signals are used, the signal receiving quality is improved apparently, and signal fading of ultraviolet signals in free space transmission is reduced.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an ultraviolet light diversity receiving system and method. Background technique [0002] Due to the shortage of wireless spectrum resources, the introduction of wireless optical communication is a huge expansion of the communication spectrum. In the layout of information technology, the deployment of broadband wireless access network is limited by the limited resource of electromagnetic spectrum. As more and more wireless electronic devices are connected to the network, spectrum congestion becomes more prominent, and mutual interference between electronic devices becomes more serious. [0003] Ultraviolet atmospheric communication has the characteristics of high anti-interference, high sensitivity, and flexibility. It can be applied to regional communication in complex electromagnetic environments. It is a cutting-edge exploration technology that has emerged in recent ye...

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Problems solved by technology

[0004] However, limited by the physical characteristics of ultraviolet light and the space optical transmission channel, the transmission distance and data rate of ultraviolet light are very limited. There are two reasons for this: first, due to the strong Rayleigh scattering of ultraviolet light in free space, Therefore, the signal fading in the free space transmission process is very strong, and the signal detection at the receiving end is very difficult; secondly, affected by the background noise and system noise of the sun's short-wave sterilization ultraviolet UVC (wavelength 200-275 nanometers), the signal noise at the receiving end The ratio is not ideal, which limits the transmission rate and transmission distance

For receiving systems based on UV LED array light sources and PMT (photomultiplier tubes), there is currently no effective method that can significantly improve the performance of the UV light transmission system.

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