No optical fiber required, technology to realize high speed communication with existing telephone line and power line will be developed

High-speed communication using fiber optics is rapidly spreading in the form of replacing the communication service "ADSL (asymmetric digital subscriber line)" using a telephone line, but by using existing telephone lines and power lines A technology to realize high-speed communication was developed.

Also, ADSL had a problem that the communication speed remarkably deteriorated when the distance from NTT's base station exceeds 2 kilometers, but it enabled long distance communication and it seemed to be an active technology in areas where fiber optics can not be laid It is.

Details are as below.
Mitsubishi Electric Develops OFDM Type Communication Technology - IP Network with Existing Lines: Nikkan Kogyo Shimbun

According to the Nikkan Kogyo Shimbun news report, Mitsubishi Electric has developed a technology that enables large capacity communication by utilizing existing metal wires such as telephone line and power line.

The newly developed technology incorporates a dedicated chip and OFDM (Orthogonal Frequency Division Multiplexing) adopted in ADSL, PLC (Power Line Network), etc., and a built-in wired transmission module in the communication device, Or the coaxial cable and power line used for signal lines can be used as they are to communicate.

It is said that this makes it possible to realize communication speeds up to 230 Mbps at low cost even in places where radio networks such as factories, tunnels, and subways and optical fibers are hard to lay down. In addition, if the communication capacity is reduced, the transmission distance can be extended to 10 kilometers, We can build a network specialized for either large capacity data transfer or long distance communication depending on the application.

It is time to commercialize it, but it is said that it aims at early commercialization after verifying reliability etc. by demonstration experiment.