Analysis of noise and transfer function characteristics in a three-phase electrical infrastructure

In this article, a series of measurements of noise and transfer function characteristics of a three-phase electrical infrastructure is made to investigate the infrastructure´s advantage over a single-phase one. The system considered was one where the transmitter makes use of all three phases but the receiver is connected to only one. The results corroborate previous work by showing that periodic impulsive noise and narrowband noise are the most prevalent types of noise occurring in PLC channels. As for the transfer function, the measurements obtained show that crosstalk between phases does exist and that, since different phases have different topologies, the transfer functions between each of the three phases and the received phase differ enough to be usable in a MISO (Multiple Input-Single Output) system.