You should be talking about transmission over power lines (Power Line Communication).
Power Line Communication, is a type of communication that utilizes power lines to transmit information and media signals. The technology involves loading high frequencies containing information into an electric current and then transmitting it over a wire. The adapter that receives the information then separates the high frequencies from the electric current and transmits them to a computer or telephone for information transfer.
In layman's terms, this means that the communication signal and the utility power are put in the wire and transmitted together. The communication signal frequency is very high, at least hundreds of M, while the utility power is only 50Hz, so that the receiver can easily filter out the communication signal inside and realize the data transmission.
About the practical application, what I know is the router side. Listened to a TP-LINK presentation, HR said that this technology has been very commonly used in Europe, the family house a few hundred square meters when the wireless router coverage may not be good, so many families have Internet access are using the power line, TP-LINK also has the corresponding products.
A powerline adapter is a communication device that uses power lines to transmit information and media signals.
When the Internet road is expanding at an alarming rate, the bottleneck that restricts our access to the Internet seems to be the only way to access the Internet. Thus the terms ISP dial-up, community broadband, ADSL, DNN and so on appeared. Wireless network is also beginning to popularize, but the coverage of wireless network still makes us unable to immediately realize the Internet anytime, anywhere. Then with the application of power communication equipment, we can finally own at will in the world of broadband to roam.
PLC (Power Line Communication) is a communication method that utilizes power lines to transmit information and media signals. The technology involves loading high-frequency information into an electric current and transmitting it over a wire. The adapter that receives the information then separates the high-frequency from the electric current and transmits it to a computer or telephone for information transfer.
It is not necessary to rewire the existing wires to realize the information, voice and video and other multi-service bearer, to achieve quadruple play. End-users only need to plug in the power plug, you can realize the inter-network access, TV channels to receive programs, call or video phone.