Patent ID: 8649468

Claim:
A processing method for power line carrier signal reception, comprising: by a low noise amplifier, amplifying received analog signals according to an control signal and sending the amplified signals to an analog mixer; frequency mixing, by the analog mixer, received power line carrier signals, wherein a frequency of the mixed signals is within a band-pass of an analog filter; filtering, by the analog filter, the mixed signals; performing an analog-to-digital conversion of the filtered signals, and frequency mixing, by a digital mixer, the converted signals, wherein a frequency of the mixed signals is within a band-pass of a digital filter; by the digital filter, filtering the mixed signals, and sending the filtered signals to a digital demodulator; performing, by the digital demodulator, demodulation of the filtered signals to obtain base band data; computing, by a parameter collect module, an output energy parameter of the digital demodulator; and generating, by a gain control module, the control signal for the low noise amplifier according to the output energy parameter.