POWER LINE COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a power line communication system capable of performing communication with sufficient accuracy by properly selecting a carrier frequency of a signal.

SOLUTION: A power line communication system comprises: a power line connected to a power supply; and a plurality of communication means for performing communication by using the power line as a communication line. The plurality of communication means: transmit a quality evaluation signal composed of sequential multiple signals having different carrier frequencies added to a signal in transmitting the signal to another communication means through the power line; perform signal quality evaluation of the quality evaluation signal for each carrier frequency in receiving the signal from another communication means through the power line; and transmit the signal by adopting a carrier frequency having higher evaluation prior to a carrier frequency having lower evaluation in the signal quality evaluation, in transmitting the signal to the other communication means through the power line.

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