For this reason, the values of this physical quantity are often used as a decision indicator to setup the configuration for communication. The Signal to Noise Ratio (SNR), or similar related quantities, is considered as one of the main parameters and channel quality indicators. As a rule, this is the most robust communication mode. Available technologies resolve this problem by hardcoded settings of adaptive methods in better cases in worse cases, there is only one configuration that the device works with. The predicted suitability of the technology and its specific configuration in particular applications are problematic depending on the specific deployment location. Usability, due to the time and frequency invariance of several parameters such as power spectral density and line impedance, is limited. The parameters of the power line (cable type) and the influence of possible interference (background noise) are essential communication parameters. The real environment affects the functionality of a particular technology. Specific technology is chosen by the end use application. The main division of PLC technology is given by the frequency band i.e., Narrow Band (NPLC) and Broadband (BPLC) systems. BPLC technology is a separate part of the generally used term PLC (Power Line Communication) technologies. It is widespread in areas from home use via smart metering to industry solutions. Broadband Power Line Communication (BPLC) technology is well known in the commercial and scientific spheres today.
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