The paper deals with transmission of communication signals over low-voltage power distribution lines. Narrowband data transmission for Smart Metering systems is considered. The probability of data frame loss is derived, based on practical experiments, and its impact on the efficiency of reading data records from electricity meters is discussed. Furthermore, communication system with frequency-shift keying modulation is considered. The system performance can be extended using wider frequency band and OFDM modulation.

Simplified model for performance estimation of narrowband data transmission over low-voltage power lines

The paper is dedicated to different topologies of medium-voltage power distribution lines with respect to their properties influencing the transmission of communication signals. We provide very basic introduction to the problems of signal transmission over these lines, discuss their parameters and examine the typical behaviour and characteristics. We conclude our considerations with some specific recommendations concerning the most advantageous configurations for the purposes of Power Line Communication (PLC). The data transmission capacity is calculated for different topologies and network conditions.

Modelling of Data Communication over Medium-Voltage Power Distribution Lines

Abstract. The article introduces a novel concept of a PLC modem as a complement to the existing G3 and PRIME standards for communications using mediumor high-voltage overhead or cable lines. The proposed concept is based on the fact that the levels of impulse noise and frequency selectivity are lower on high-voltage lines than on low-voltage ones. Also, the demands for “cost-effective” circuitry design are not so crucial as in the case of modems for low-voltage level. In contract to these positive conditions, however, there is the need to overcome much longer distances and to take into account low SNR on the receiving side. With respect to the listed reasons, our concept makes use of MCM, instead of OFDM. The assumption of low SNR is compensated through the use of an efficient channel coding based on a serially concatenated turbo code. In addition, MCM offers lower latency and PAPR compared to OFDM. Therefore, when using MCM, it is possible to excite the line with higher power. The proposed concept has been verified during experimental transmission of testing data over a real, 5 km long, 22 kV overhead line.

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New Concept of PLC Modems: Multi-Carrier System for Frequency Selective Slow-Fading Channels Based on Layered SCCC Turbocodes

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New Concept of PLC Modems: Multi-Carrier System for Frequency Selective Slow-Fading Channels Based on Layered SCCC Turbocodes