PLC Module

Power Line Communication (PLC) refers to a communication method that utilizes power lines to transmit data and media signals. The technology works by superimposing information-carrying high-frequency signals onto electric current, then using power line communication adapters to extract these high-frequency signals and route them to the internet.

PLC transmits signals using the frequency band ranging from 1.6 MHz to 30 MHz. During transmission, user data is modulated using either GMSK or OFDM modulation techniques before being transmitted over power lines. At the receiving end, the modulated signal is first filtered out with a filter and then demodulated to recover the original communication signal. The achievable communication rate ranges between 4.5 Mbps and 45 Mbps depending on specific devices.

PLC technology eliminates the need for additional wiring by utilizing existing power distribution networks as transmission lines, significantly reducing network deployment costs. Power lines constitute the most extensive network, with a scale unmatched by any other network infrastructure. Thus, PLC can easily penetrate every household, creating tremendous potential for the development of the internet.