Transmitting/receiving diversity method using single-phase three-wire power-line for power-line communication

摘要

The low voltage distribution power-lines from the distribution transformer to the fuse box are single-phase and three-wire type and the In-house power-lines are single-phase and two-wire type in Japan. The two-wire type power-lines are constructed of a pair of wires of the three-wire type power-lines. And the two-wire type power-lines are used as 200V or 100V AC. Under this condition, there is mutual coupling between different pair of power-lines. Therefore it is possible to improve performance of the power-line for communication by using the Space-Frequency Coding when the transmitter or receiver is on at least two pairs of power-lines. In this paper, the transmitting/receiving diversity method using the Space-Frequency Code for Power-Line communication is proposed and the effectiveness of this method has been confirmed by experiments.