Study Of Wireless Communication Technology Based On Visible Light Communication And Power Line Communication

Along with the rapid development of information construction, the speed of information transmission, the stability of the new requirements. Wireless communication technology has outstanding advantages in many means of communication, but also has its limitations, in order to meet the needs of development, the development of a more excellent wireless communication technology is imminent.Visible light communication technology is a kind of green lighting technology, its hardware foundation is LED semiconductor lighting. The characteristics of the semiconductor light emitting short response time, after encoding modulation of visible light directly on atmospheric propagation. Where LED as a communication base station, can be completed at the same time the task of lighting and transmitting communication data. Compared with the commonly used wireless communication technology in industry and life, the visible light communication technology can be modulated to a relatively high transmission power while saving the radio frequency spectrum due to the absence of radiation. And kept high, no electromagnetic interference, etc. 17 in aerospace, industrial, medical and other fields become existing wireless communication technologies complement, also the power line communication technology and LED light communication technology combine to make it in the communication of smart home, wireless indoor positioning, intelligent traffic system, networking control transmission also has a huge space for development. Visible light can not penetrate opaque objects, so in a certain area of the closed section of the local area network information is absolutely safe, which makes visible light communication technology in the field of information security also has significance. In the system communication network is built in addition to to the LED power supply also need additional set up lines of communication, not only a waste of resources and problems also increases the difficulty of wiring, power line carrier technology can is an effective way to solve the above problems, also in order to make the receiver using a more general USB interface system at the receiving end of the Ethernet, USB conversion technology.The system consists of a part of visible light communication and power line communication. The visible light communication part mainly includes visible light transmission and visible light receiving. Visible light emission is mainly designed LED drive circuit, photoelectric medium conversion. Visible light receiving mainly includes signal amplification and filtering. The power line communication part mainly uses the INT6400 chip as well as the peripheral control module design composition. Finally, based on the data transmission experiment, the feasibility of the wireless communication system is verified, and the dual purpose of LED lighting and communication is achieved.System creativity will be visible light communication technology and LED communication technology, which is the visible light from the laboratory to the real application of a probe, to provide a new idea for the practical use of visible light.