A Channel Model for Threenode Twoway Relayaided PLC Systems A pointtopoint (P2P) indoor power line communications (PLC) channel has similar broadcasting nature as the wireless propagation channel because of its treelike topology. However, once a relay node is introduced into the PLC system, it shows some notable differences between the relayaided (RA) PLC channels and the wireless channels. In the literature, a channel model for threenode oneway RA PLC system has been discussed. However, threenode twoway PLC system is needed in several applications such as smart grids. Therefore, in this paper, we aim to model the RA PLC system with forward and reverse channels. We use the ABCD method to derive the channel transfer function (CTF) expressions. The CTFs of an RA PLC channel cannot be simply stimulated by cascading two independent P2P channels which can be proved by the simulation results.

Testing home PLC network in multistorey house The technology based on the principle of data transmission over electrical networks called PLC (Power Line Communication) PLC modulate highfrequency signal in the order of tens of MHz to lowfrequency electric signal 50 Hz. This technology is suitable for data transmission, whether in the form of narrowband or broadband services. This paper deals with the measurement of transfer rates in a real home network built on a PLC technology platform, which allows the construction of a less expensive functional home network without the need for new structured cabling. The results of measurements of transmission rates in individual parts of the apartment house will serve for a more optimal distribution of terminal equipment in the home network.