What is “Indoor” PLC?
PLC “indoor” solutions currently available on the market are almost exclusively based on the HomePlug specification and should be interoperable. The importance of this technology is that it uses an existing wiring network and gives the best distribution throughout a house or building: the access points to the electrical network are the electrical sockets. Therefore, PLC products make it possible to connect equipment via electrical sockets, create a network between equipment and connect to Broadband Internet services, which is one of the main ways of exchanging information at the current time. The HomePlug standard uses OFDM modulation techniques (Orthogonal Frequency Division Multiplexing) which is based on the simultaneous emission of N carriers on n frequency bands (situated between 2 and 30 Mhz). The access protocol used for this is the CSMA/CA (Carrier Sense Multiple Access / Collision Avoidance) which gives an effective and robust dialogue with the network layer.
