An Experimental Setup for Characterizing the Residential Power Grid Variable Behavior

An experimental set-up for characterizing the residentia

Multipath Characterization of Indoor Power Line Networks

The time- and frequency-varying behavior of an indoor power-line network is the result of variable impedance loads connected to its termination points. In fact, any signal transmitted through such a communications network is subject to time-varying multipath fading. In this paper, an analytical calculation method is presented, which can be used to determine the multipath components of any point-to-point channel in the indoor power-line environment. The method calculates all transmission characteristics of the network and, therefore, it can be exploited in the process of designing proper transmission algorithms for optimizing system performance. The proposed method is applied to an example network to demonstrate its usefulness in explaining the network's time-dependent behavior and in estimating channel parameters, such as subchannel bandwidth, multipath delay spread, fading conditions, etc

Analytical Computation of Multipath Components in the indoor power grid

Varying impedance loads connected to the termination points of power-line channels result in variable channel behavior. Any transmitted signal in such a communications system is subject to time-varying multipath fading. In this paper we present a method for determining the multipath components of any transmitterreceiver pair in the indoor power-line environment. Such information could be valuable in the process of designing the proper receiver architecture. The proposed method is applied to a network to demonstrate its usefulness in explaining the network's time-dependent behavior

An Analytical Method for Network Loading Estimation based on Channel Training

Estimation of network loading conditions can assist the prediction of channel behavior between any two communicating devices on a power line network, thus making the use of more efficient adaptable transmission techniques feasible. This paper presents a method for performing impedance estimation of termination loads connected to a power line network by utilizing channel training data sequences. The network is considered as a set of multiple point-to-point links, whose characteristics are affected by the loads connected to its termination points. Their transfer functions can be used to determine the reflection and transmission coefficients at all points of discontinuity on the network and finally, to estimate the connected impedances. The limitations of the proposed method are analysed and an example that demonstrates the method's effectiveness is presented