An evaluation of power line communication channel modelling for indoor environment application

Abstract

Nowadays, Power Line Communication is becoming an attractive solution to deliver broadband services to indoor and outdoor environment because this technology allows the use of the existing infrastructure. The knowledge of the channel characteristics is very important. A perfect real multipath model is very difficult to be found out because depends on cable models and topology but an accuracy approach is fundamental to evaluate the power line communication by the transfer function. Multi conductor Transmission line theory is an accurate tool to model the transfer function of the channel using complex circuit level models that can be represented in terms of cascaded two-port network. Then it is possible to compute a priori and in a deterministic fashion a transfer function of the PLC channel. This paper is based on the chain matrix method and shows the indoor PLC evaluation with regard to network load impedances, branched line length and number of branches.