Analysis of the level of SNR in the PLC channel based on the results of mathematical and physical modelling

Abctract. One of the most pressing challenges still existing in modern communication systems based on PLC (Power Line Communication) technology is distortion of the original signal when it passes over the communication channel. This article is concerned with the assessment of the impact of the PLC channel on a signal, which was carried out by physical and mathematical simulation tools. The goal of the research is to find correspondences between the mathematical model and the real-world PLC channel. In this article, the real-world PLC channel is represented as a physical model, which was executed with the Texas Instruments evaluation kit. The mathematical model considered was executed with Matlab environment. The SNR (Signal-to-noise Ratio) parameter was used for the assessment of the impact of the PLC channel on a signal in the physical model. The LQI (Link Quality Indicator) parameter was used for the same purpose in the mathematical model. According to the results of the investigations, it is identified that the mathematical model corresponds in its properties to the real-world PLC channel. Therefore, the developed mathematical model is suitable for further investigations of the processes occurring in the real-world PLC channel.