Indoor wireless optical communication uplink

Abstract

The embodiment of the invention discloses an indoor wireless optical communication uplink. A plug type wireless transmitting device and a wireless receiving device are set. The plug type wireless transmitting device is used for receiving information transmitted by a terminal, converting the information into an infrared optical signal carrying the information and sending the infrared optical signalto the wireless receiving device. The wireless receiving device is used for converting the infrared optical signal into an electric signal matching an Ethernet interface, thereby transmitting the electric signal to a local area network through the Ethernet interface. According to the embodiment of the invention, a transmission rate matching a visible light downlink is realized, the relatively high mobility is achieved, an equipment size is greatly reduced, moreover, electromagnetic radiation is not imported, no visual interference exists, and the relatively high user experience is achieved.

Description

technical field [0001] Embodiments of the present invention relate to wireless optical communication technology, and in particular design an uplink of indoor wireless optical communication. Background technique [0002] In the research on the uplink of indoor wireless optical communication, the indoor communication based on wifi radio frequency technology, the uplink of indoor communication based on visible light and the uplink of indoor communication based on infrared diode are usually used. [0003] Indoor communication based on wifi radio frequency technology is currently the most mature indoor wireless communication method, which can be used as both uplink and downlink, but wifi radio frequency technology will introduce electromagnetic interference and has poor confidentiality. [0004] The uplink of indoor communication is established based on visible light. In the prior art, white light LEDs are usually used as the transmitting device of the uplink, and the modulated v...

AI Technical Summary

Problems solved by technology

However, the use of visible light LEDs as the carrier of the uplink has the following two disadvantages: one is that the yellow phosphor white LEDs commonly used in the market have limited bandwidth; the other is that if LED lights are installed on the terminal to achieve indoor uplink communication, If the LED is always on, it will cause visual interference to the user and affect the user experience.

However, the infrared light band in the range of 780-950nm is close to the visible light band, and human eyes are extremely sensitive to infrared light in this band. Therefore, the use of infrared diodes in this range as the emission source must strictly limit the modulation bandwidth and emission power. For higher wavelengths Range of infrared diodes still need further breakthroughs in science

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