Abstract
This paper designs an indoor visible light communication application system based on LED. The system can modulate the original signal one or more times, move to a specific frequency band, transmit on the power line, in the LED terminal use this module to decode, restore the Ethernet signals. This design is applicable to the simplicity of the LED visible light communication applications, which provide the premise and guarantee for the construction of smart home network.
Highlights
Visible light communications technology is a new type of wireless communication developing rapidly in the past ten years, through the increase in public infrastructure lighting auxiliary function of data transmission, combining communication with indoor lighting Light source, can build indoor Visible Light wireless communication network, information from the server to the client's wireless transmission [1]
Due to visible light is closely related to daily life, office, family, and many of the public equipment is visible light, such as office lights, road lights, the square of the display screen, etc, so the indoor visible light communication technology can meet the users of mobile communication network of wide coverage, high link quality requirements, for indoor users with the convenience of data services anytime and anywhere
The indoor visible light communication technology using visible light transmission medium which can ensure the security of mobile communication network, including network data security and user safety and health, the user information privacy protection, avoid malicious intercepted by other users, even for a long time in the mobile communication network, will not affect their health
Summary
Visible light communications technology is a new type of wireless communication developing rapidly in the past ten years, through the increase in public infrastructure lighting auxiliary function of data transmission, combining communication with indoor lighting Light source, can build indoor Visible Light wireless communication network, information from the server to the client's wireless transmission [1]. Flexible temporary network and communication links, reduce the use and maintenance costs of network [6] Radio frequency signals such as subways and tunnels cover blind areas, and if radio frequency communication is used, high cost is required to establish base stations and pay expensive maintenance costs. Indoor visible light communication technology can use its indoor lighting source as base station, combined with power line communication, to provide users with convenient indoor wireless communication services. Indoor visible light communication can meet the requirements of users for security, stability, speediness and environmental protection of communication links, and provides a new broadband access mode for indoor wireless communication networks. At the end of the LED lamp, this module is used to decode and restore the Ethernet signal
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