indoor high-speed visible light communication system based on OFDM

Abstract

The invention discloses an indoor high-speed visible light communication system based on OFDM. The power line carrier communication module belongs to an intelligent communication product, solves the problem of interconnection of an LED lamp and the Ethernet in LED visible light communication application through an embedded technology, a sensor technology, a wireless communication technology and acorresponding hardware structure, omits a network line to directly use a power line for communication, and belongs to the field of intelligent communication. The power line carrier communication module based on the OFDM technology comprises a power line carrier communication module and a power line carrier communication module, The communication module comprises a communication module body (1), The communication module is characterized by further comprising a main control module (2) and a mutual inductor circuit (3) which are arranged on the communication module body (1), wherein the network interface circuit (4) is connected with the mutual inductor circuit (3), the power input interface (5) and the 220V power line interface (6) are connected with the network interface circuit (4), and the mutual inductor circuit (3) comprises a power circuit (7), a transmitting circuit (8), a receiving circuit (9), a power line coupling circuit (10) and a zero-crossing detection circuit (11). The power line carrier communication module based on the OFDM technology is simple in structural design, convenient to use and high in transmission efficiency.

Description

technical field [0001] An OFDM-based indoor high-speed visible light communication system relates to the field of power communication, especially the field of LED optical communication. Background technique [0002] In the 1920s, power line communication began to attract people's attention. Since power line communication uses ubiquitous power cables as the transmission medium, power line communication has outstanding advantages such as low investment, high return, and simple network construction and maintenance. Therefore, it has developed rapidly. Traditional power line communication can only transmit information through high-voltage transmission lines, and its application range is quite narrow. With the continuous development and maturity of power line communication technology, power line communication can now be used in different transmission line networks such as high, medium and low voltage, and is widely used. applied in different fields. Low-voltage power carrier co...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides an OFDM-based indoor high-speed visible light communication system. This communication module has strong anti-interference ability, simple connection mode and strong stability, and effectively solves the problem of LED lights and Ethernet in LED visible light communication applications. internet connection problem

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