Power line communication apparatus and power line communication method

摘要

Power line communication apparatus 100 is provided with auto gain detector 106 that detects a gain fluctuation of AGC (Auto Gain Control) circuit 105 that automatically adjusts a gain of a received signal; retry ratio calculator 114 that calculates a ratio of retry based on output from ARG (Automatic Repeat request) unit 113 that detects an error in the received data and issues a repeat request; and transmission rate calculator 116 that calculates a transmission rate based on output from channel estimation unit 115 that calculates a CNR so as to estimate a transmission status. Display 117 displays a transmission status, including the detected AGC noise fluctuation; retry ratio, transmission rate and the like.