Bit-Transport Capability of Broadband Multicarrier Power Line Channels Constrained by Radiated Emission

A procedure is proposed to test the bit-transport capability of the multi-carrier scheme on distribution power networks in the frequency range of 1-30 MHz. A frequency-dependent rigorous model of medium-voltage power networks made of branches of three-phase lines above a dissipative ground is utilized. The radiated electromagnetic field is predicted by means of a full wave procedure in the high frequency range taking into account the ground propagation. The integer-bit loading procedure presents as a target the optimal bit-allocation in the sub-channels having the same bandwidth and the maximization of the total bit-rate. The constraints imposed by the source are the power level and the radiated electromagnetic field. Networking aspects are considered both for the effect of crosstalk induced by the presence of multiple users/stations and for policies accounting for the QoS requests coming from the users. Different policies are investigated by considering both fairness requirements, that reduce the network net rate, and unfair approach able to maximize the network rate without considering "all" the QoS requirements. The procedure is applied for the optimal bits allocation on the sub-channels of a medium voltage power network with a tree-type configuration made by five branches.