POWER LINE COMMUNICATION METHOD

PROBLEM TO BE SOLVED: To improve communication quality in a power line communication. SOLUTION: The power line communication method is performed by using an indoor wiring in which a plurality of branch lines 14 are connected to a lead-in line 13 of a single phase three-line system. In the method, a first communication apparatus 31 is connected to a first branch line 14(1), and a second communication apparatus 41 is connected to a second branch line 14(3) connected to the lead-in line 13 so as to be in-phase with the first branch line 14(1). Further, a termination circuit 30 for matching the impedance of a communication path connecting the first communication apparatus 31 configured by the lead-in line 13 and the branch lines 14(1), 14(2) with the second communication apparatus 41 is provided only in outlets 51(1), (2), (7), (8) provided on the first branch line 14(1) or the second branch line 14(2). COPYRIGHT: (C)2007,JPO&INPIT