Carrier Communication Method, Device and System For Low-Voltage Power Line

A carrier communication device for low-voltage power lines, the device comprising:

• an acquisition unit configured to acquire communication data comprising user data transmitted during a communication and comprising frame control data for assisting with decoding of the user data;
• a first modulation unit configured to encode the communication data using orthogonal space-time block codes and, in the case of unknown channel status, to generate multipath transmission signals;
• and
• a transmission unit configured to transmit the multipath transmission signals to an electric energy meter via three-phase power lines.

A carrier communication system for low-voltage power lines, the system comprising:

• a concentrator;
• and
• at least one electric energy meter coupled with the concentrator via three-phase power lines, the three-phase power lines comprising an A-phase phase line, a B-phase phase line, a C-phase phase line and a neutral line;
• wherein the concentrator comprises:
• a first signal transmission module coupled with the A-phase phase line and a first signal receiving module coupled with the neutral line;
• a second signal transmission module coupled with the B-phase phase line and a second signal receiving module coupled with the neutral line;
• a third signal transmission module coupled with the C-phase phase line and a third signal receiving module coupled with the neutral line;
• and
• wherein the electric energy meter comprises a transmission module coupled with at least one of the three-phase power lines and a receiving module coupled with the neutral line.
• the device comprising:
• an acquisition unit configured to acquire communication data comprising user data transmitted during a communication and comprising frame control data for assisting with decoding of the user data;
• a first modulation unit configured to encode the communication data using orthogonal space-time block codes and, in the case of unknown channel status, to generate multipath transmission signals;
• and
• a transmission unit configured to transmit the multipath transmission signals to an electric energy meter via three-phase power lines.