This paper analyzes the normalized signal-to-noise ratios (nSNRs) of power line and wireless media to evaluate the suitability of hybrid power line/wireless systems in inhome broadband scenarios. In this sense, we assume that the transmitter node knows the channel state information, and then we seek to find the level of diversity between power line and wireless medium based on the amount of nSNR intersections in the frequency domain. In the numerical analysis, we show that power line and wireless media present nSNRs intersections in several scenarios. With this, it can be estimated whether or not the transmission power should be allocated. Moreover, we verify that greater diversity is found with the distance increasing, which favors hybrid power line/wireless systems.
This paper introduces a practical approach to analyze and quantify the benefits of using the waste-to-energy concept to improve power quality and energy efficiency in electric power systems. Also, we introduce the so-called Passive Filtering Energy Recovery, which aims to perform the energy recovery in undesirable components present in electric signals. Finally, numerical results show that this approach can improve power quality and energy efficiency in the Brazilian scenario.
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