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—Low voltage power line is widely used for carrier communication, whose channel characteristics is an important factor to the quality of carrier communication. In order to make a model analysist to obtain the input impedance characteristics, attenuation characteristics and noise characteristics of low voltage power line carrier communication. This paper put forward a model for the communication channel by analyzing the characteristics of low voltage power line communication channel. The simulation result could accurately reflect the characteristics of channel noise, which matches the data measured in the laboratory environment very well. The spectrum analysis of measured noise data and the simulation result of power line impedance and attenuation characteristics show that the noise, impedance and attenuation between 120kHz ± 20kHz band is relatively small, so the band is suitable for low voltage power line carrier communication.

Research on the Characteristics of the Low Voltage Power Line Carrier Communication Channel