DIGITAL SIGNAL PROCESSING FOR PLC COMMUNICATIONS HAVING COMMUNICATION FREQUENCIES

摘要

Aspects of the present disclosure are directed toward receiver devices and methods of using receiver devices. One such method can include converting, using an analog-to-digital converter (ADC), and an analog input signal from power distribution lines that carry power using alternating current (AC) to a digital form. This input digital signal can be an oversampled digital signal, where the digital signal is oversampled relative to downstream processing (e.g., FFT-based processing). A processing circuit(s) can then be used to decimate the input digital signal according to a decimation rate. A reference signal can be generated by the processing circuit that is responsive to the decimation rate. The processing circuit can also be used to detect a change in a phase difference between the AC and reference signal and to modify, in response to detecting a change in the phase difference, the decimation rate to counteract the detected change in the phase difference.

主权项

1. A circuit-based apparatus comprising:
a transceiver circuit configured and arranged to communicate data over power distribution lines that carry power using alternating current (AC); and a logic circuit configured and arranged to
generate an input digital signal from an analog signal received at the transceiver circuit,produce, in response to a variable decimation rate, a decimated input digital signal, andin response to an indication of change in a phase difference between a reference signal and the AC, control the decimation rate to counteract the phase difference.