| 摘要 |
The invention relates to systems and methods using PLC communications for power distribution by using alternating current frequencies. According to the invention, the system consists of a transceiver circuit-based apparatus configured and arranged to communicate over power distribution lines that carry electric power by using alternating current, one or more processing circuits configured and arranged for providing an analogue-to-digital converting module configured to generate an input digital signal from an analogue signal which was received by the transceiver circuit, a decimating module configured to produce, in response to a variable decimation rate, a decimated input digital signal, a reference signal generating module configured to generate a reference signal having a frequency depending on the decimation rate and a decimation modifying module configured and arranged to modify the decimation rate. As claimed by the invention, the method consists in converting an input analogue signal from the power distribution lines that carry electric power by using alternating current into a digital form and in using a processing circuit which decimates an input digital signal, generates a reference signal, detects a change in a phase difference and modifies the decimation rate to counteract the detected change in the phase difference. |
