Zablotskyy S. Models and characteristics of broadband access transmission systems over building electric wiring networks

The purpose: development of models and methods of broadband access (BA) transmission systems (TS) characteristics calculation for justification of recommendations for the construction of access networks using PLC/BPL technologies taking into account the specificity of domestic electric power and wiring networks. Object: processes of signals transmission over electricity networks and building wiring with using PLC/BPL technologies. Subject: models and characteristics of systems of transmission over electric power and wiring networks with using PLC/BPL technologies. Scientific novelty and practical significance of the obtained results: First the building electric wiring networks (BEWN) modeling method taking into account their specificity, based on circuit wiring decomposition and construction of the scattering matrix is developed. First method of calculation of electric transmission parameters of two-core wires of ППВ and АППВ types, based on long lines theory, is proposed, and approximating linear transmission parameters functions are defined. Interference calculation method is enhanced that allows to calculate the ratio of the effective values of interference and the signal at the receiver input of TS BPL for arbitrary given values of the power of the transmitted signal on the TS BPL carriers. First model of TS BPL based on OFDM technology according to ITU-T G.9960, G.9964 Recommendations is developed, interference power on the TS BPL carriers for typical fragments of branched BEWN is calculated, estimations of data transmission rate in access network taking into account interference and additive noise are obtained. The method of modeling of domestic electric power networks and BEWN taking into account their specificity allows defining transmission parameters between separate poles of branched wiring. The method can be used in the construction and designing BA networks based on PLC/BPL technology. The approximating functions of linear transmission parameters of ППВ and АППВ types wires for frequency band from 1 MHz to 32 MHz are necessary for modeling BA networks based on PLC/BPL technology. It was found that branched building electric wiring when connecting and / or disconnecting the load to its poles is a non-stationary directing system. TS BPL model and interference calculation methods can be used for development of normative documents on the design and maintenance of the BA networks based on PLC/BPL technology. The developed method of modeling of access networks and BA equipment based on PLC/BPL technologies can be used for research of prospective BA technologies. The TS BPL characteristics taking into account interference and additive noise are important for development recommendations for the maintenance of the BA networks based on domestic BEWN. The recommendations for the construction BA networks based on PLC/BPL technologies can be used in these networks evolution planning and designing.