Empress Catherine II Saint-Petersburg Mining University, Saint-Petersburg, Russia

Yu. K. Vyboldin, Candidate of Engineering Sciences, Associate Professor, Vyboldin_YuK@pers.spmi.ru

For the purposes of distribution automation, load control and remote data acquisition, narrowband Power Line Communication (PLC) technology is commonly used. The relevance of PLC technology implementation in control systems and management of modern equipment systems at underground structures is shown. At the same time, one of the main problems arising in the construction of data transmission systems over electrical lines in underground structures is the creation of high-performance controlled modems that can operate effectively under the influence of interfering factors caused by the specifics of the underground environment. In the capacity of such factors, we consider the influence of unknown time-varying and frequency-varying parameters of a medium and the impulse interference caused by equipment switching. Taking into account the current standards of PLC technology, the structural scheme of the modem using orthogonal frequency division multiplexing (OFDM) modulation is developed. The peculiarities of the system operation in the conditions of underground structures are taken into account. The proposed algorithm of the channel parameter estimation device assumes operations on the interval of the pilot symbol OFDM, preceding the reception of the next information symbol. The proposed method efficiency is analyzed as a case-study of 16-QAM modulation. The transmission of signals with maximum energy on the pilot symbol elements is used to estimate the channel parameters. A demodulation algorithm that decides on the transmitted quadrature components of signal positions is given. The mathematical modeling finds out that the increase in the error probability associated with additional parameter estimation when receiving an information symbol is insignificant. To combat impulse noise, the noise-resistant coding is used. In order to solve the question about the expediency of changing the existing estimation of channel parameters, it is proposed to classify the current situation and, based on the results, to make a decision about updating the measurement results.

1. Vaganov V. S. Safety regulations for underground coal mines – development of multifunctional safety systems. Gornaya Promyshlennost. 2017. No. 2. pp. 77–83.
2. Multifunctional Safety Systems for Mines and Underground Mineral Mining. RealTrac Technologies. Available at: https://real-trac.com/ru/solutions/underground-mining/ (accessed: 20.06.2025).
3. Vaganov V. S., Goffart T. V., Dubkov I. S. Development of mobile devices for coalmines computer networks. Gornaya Promyshlennost. 2018. No. 1. pp. 54–58.
4. Shpenst V. A. Complexation of telecommunications and electrical systems in mines and under-ground facilities. Journal of Mining Institute. 2019. Vol. 235. pp. 78–87.
5. Hrasnica H., Haidine A., Lehnert R. Broadband Powerline Communications: Network Design. Chichester : John Willey & Sons, 2005. 304 p.
6. Shklyarskii Ya. E., Pirog S. Impact of the load curve on losses in the power supply network of the company. Journal of Mining Institute. 2016. Vol. 222. pp. 858–863.
7. Zubov V. P. Status and directions of improvement of development systems of coal seams on perspective Kuzbass coal mines. Journal of Mining Institute. 2017. Vol. 225. pp. 292–297.
8. Abramovich B. N. Uninterruptible power supply system for mining industry enterprises. Journal of Mining Institute. 2018. Vol. 229. pp. 31–40.
9. Bazhin V. Yu., Masko O. N., Anufriev A. S. Substantiation of choice of a platform for material flow control in metallurgical silicon production. MIAB. 2024. No. 1-1. pp. 206–219.
10. Kazanin O. I., Meshkov A. A., Sidorenko A. A. Prospects for development of a technological structure of underground coal mines. MIAB. 2022. No. 6-1. pp. 35–53.
11. Xu K., Li Z., Yan Y., Dai H., Wang X. et al. Adaptive load balancing for dual-mode communication networks in the power internet of things. Electronics. 2023. Vol. 12, Iss. 20. ID 4366.
12. Vorontsov A. G., Glushakov V. V., Pronin M. V., Sychev Yu. A. Cascade frequency converters control features. Journal of Mining Institute. 2020. Vol. 241. pp. 37–45.
13. Sychev Yu. A., Kostin V. N., Serikov V. A., Aladin M. E. Nonsinusoidal modes in powersupply systems with nonlinear loads and capacitors in mining. MIAB. 2023. No. 1. pp. 159–179.
14. Götz M., Rapp M., Dostert K. Power line channel characteristics and their effect on communication system design. IEEE Communications Magazine. 2004. Vol. 42, Iss. 4. pp. 78–86.
15. Anatory J., Theethayi N., Thottappillil R., Kissaka M. M., Mvungi N. H. The influence of load impedance, line length, and branches on underground cable power-line communications (PLC) systems. IEEE Transactions on Power Delivery. 2008. Vol. 23, Iss. 1. pp. 180–187.
16. Korotchenko F., Natashina N. Data communication netting using PLC technologies. Control Engineering Rossiya. 2019. No. 6(84). pp. 64–68.
17. Tebuev M. B. I., Tebuev T. B. I., Shpenst V. A. Devices and means of control of underground facilities based on PLC technology. Testing. Diagnostics. 2019. No. 12. pp. 44–47.
18. Noura H. N., Melki R., Chehab A., Fernandez J. H. Efficient and robust data availability solution for hybrid PLC/RF systems. Computer Networks. 2021. Vol. 185. ID 107675.
19. Konstantinov A. V., Shpenst V. A. Conceptual model of radio complex to ensure the safety of underground production mining. IOP Conference Series: Earth and Environmental Science. 2019. Vol. 378. ID 012061.
20. TE103 PLC/ISM Modems. Manual. FRDS 467769.001RE / Tek hno-Energo LLC. Available at: https://te-nn.ru/docs/te103/ruk_te103.pdf (accessed: 20.06.2025).
21. Anatory J. Performance analysis of MC-SS for theiIndoor BPLC systems. International Journal of Electrical, Computer, Energetic, Electronic and Communication Engineering. 2011. Vol. 5, No. 3. pp. 465–470.
22. Berger L. T., Schwager A., Escudero-Garzás J. Power Line Communications for smart grid applications. Journal of Electrical and Computer Engineering. 2013. Vol. 2013. ID 712376.
24. Oksman V. High-frequency narrowband PLC for automation of 6–20/0.4 kV and SMART GRID distribution mains. Standard G3, G.HNEM. Avtomatizatsiya i IT v energetike. 2013. No. 4(45). pp. 2–11.
25. Pereira S. C., Caporali A. S., Casella I. R. S. Power Line Communication Technology in industrial networks. IEEE International Symposium on Power Line Communications and Its Applications. Austin, 2015. pp. 216–221.
26. Wei S., Qin S., Gao W., Cheng F., Cao Z. Research of characteristics of the low voltage power line in underground coal mine. Physics Procedia. 2012. Vol. 25. pp. 1063–1069.
27. Lazaropoulos A. G. Statistical broadband over power lines channel modeling—Part 1: The theory of the statistical hybrid model. Progress in Electromagnetics Research. 2019. Vol. 92. pp. 1–16.
28. Raponi S., Fernandez J. H., Omri A., Oligeri G. Long-term noise characterization of Narrowband Power Line Communications. IEEE Transactions on Power Delivery. 2022. Vol. 37, Iss. 1. pp. 365–373.
29. Tonello A. M., D’Alessandro S., Lampe L. Cyclic prefix design and allocation in bit-loaded OFDM over Power Line Communication Channels. IEEE Transactions on Communications. 2010. Vol. 58, No. 11. pp. 3265–3276.
30. Asadpour M., Tazehkand B. M., Seyedarabi H. A robust Bayesian inference-based channel estimation in power line communication systems contaminated by impulsive noise. Turkish Journal of Electrical Engineering and Computer Sciences. 2016. Vol. 24, No. 4. pp. 2865–2880.
31. Andronov I. S., Vyboldin Yu. K., Malinin S. I. QAM binary data demodulation in diversity reception in a medium with unknown parameters. Radiotekhnika. 1996. No. 11. pp. 32–35.
32. Vyboldin Yu. K., Zaichenko K. V. Algorithm for receiving signals with quadrature amplitude modulation in communication channels with fading. Radiotekhnika. 2018. No. 9. pp. 193–199.
33. Tunç M. A., Perrins E. Pilot based channel estimation and transform domain analysis in broadband PLC for Smart Grid. IEEE International Conference on Smart Grid Communications. Vancouver, 2013. pp. 283–288.