Popis: |
Using power lines to transmit telecommun ications has become one of most suitable options to offer tele-co mmunications services over IP protocol, due to an economic benefit that comes fro m utilizing a preexisting infrastructure. Ho wever, electric grid wasn't made for teleco mmunications purposes, causing several undesired effects such as: mult ipath behavior similar to wireless network without fast fading, electro magnetic interference, different sources of noise and change of channel's response due to loads connected to the grid. This paper shows what kinds of variat ions of response exist and how this effects can be treated using a stochastic modificat ion of Zimmerman's model of PLT network. |