Method and device for optimizing signal power on a wired communications network

A method for increasing the power of a signal transmitted over a frequency band including a plurality of subcarrier frequencies from a device connected to an alternating current (AC) powerline communications network (PLC) without exceeding an allowable common mode current at each of said subcarrier frequencies, the method comprising:

• transmitting a signal from the device when connected to a standard network having a generally fixed impedance;
• recording the common mode current ICM(a) on the standard network at each of said frequencies;
• recording the differential mode voltage VT(a) of the transmitted signal at each of said frequencies;
• connecting the device to the PLC network;
• transmitting a signal having a differential mode voltage VT(a) at each of said frequencies;
• recording the common mode current ICM(b) on the PLC network at each of said frequencies;
• calculating a common mode current difference value ICM(b)−ICM(a) for each of said frequencies;
• and
• increasing the power of the transmitted signal, said increased-power signal having a differential mode voltage VT(B) at each of said frequencies, wherein VT(B) at each of said frequencies is increased above VT(a) at each of said frequencies by the absolute value of said common mode current difference value at each of said frequencies.