In classical telecommunication technology, there is increased demand for broadband channels and circuits in access networks. This trend is also reflected in transmission resources using distribution power lines as a transmission path.
Electric power distribution grids also exhibits infrastructure that is very little exploited in terms of transmission capacity. However, it represents the access network brought to individual consumers of electric energy and allowing transmission of digital signals at the transmission rate in the range of tens to hundreds Mbps.
The last decade of the previous century has brought the requirement to use some part of the high-voltage transmission networks also for broadband high-speed data signals. This requirement was caused mainly by mass expansion of the Internet and the idea to use power lines for access to this information technology. The beginnings of this approach dates back to the 90s of the 20th century.