Mr. Alexander Pastukh
Radio Research and Development Institute (NIIR), Moscow, Moskva, Russia
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Academic Career Length
6Years (2021-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
Alexander PastukhVTValery Tikhvinskiy
Valery TikhvinskiySDSvetlana Dymkova
Svetlana DymkovaOVOleg Varlamov
Oleg VarlamovThis article presents a comprehensive study of the potential utilization of the L-band and S-band frequency ranges for satellite non-terrestrial network (NTN) technologies. This study encompasses an interference analysis in the S-band, investigating the coexistence of NTN satellite systems with mobile satellite networks such as Omnispace and Lyra, and an interference analysis in the L-band between NTN satellites and the mobile satellite network Inmarsat. This study simulates an NTN satellite network with typical characteristics defined by 3GPP and ITU-R for the n255 and n256 bands. Furthermore, it provides calculations illustrating the signal-to-noise ratio degradation of low-Earth-orbit (LEO), medium-Earth-orbit (MEO), and geostationary-Earth-orbit (GEO) satellite networks operating in the L-band and S-band when exposed to interference from NTN satellites.
Journal Article
VTValery Tikhvinskiy
Valery TikhvinskiyAlexander PastukhSDSvetlana Dymkova
Svetlana DymkovaOVOleg Varlamov
Oleg VarlamovRedCap technology is set to become a critical component in the growth of the Internet of Things (IoT), enabling sensors and wearable devices for medical, industrial, and commercial applications. However, because RedCap primarily operates in non-public networks and does not synchronize its time-division duplexing (TDD) mode with 5G NR networks, interference risks arise. This is particularly concerning as traditional 5G NR networks prioritize downlink communication, whereas RedCap is designed for uplink. This study investigates the potential interference between RedCap non-public networks and 5G NR in TDD FR1 and FR2 frequency bands using Monte Carlo simulation techniques. The results illustrate how RedCap deployments may impact 5G NR performance in urban and suburban environments. Key insights are provided to inform strategies for minimizing interference and ensuring coexistence between these technologies.
Journal Article
Alexander PastukhVTValery Tikhvinskiy
Valery TikhvinskiyEDEvgeny- Devyatkin
Evgeny- DevyatkinThis paper delves into an interference analysis, focusing on the forthcoming Starlink Generation 2 satellites, stated to operate within the 1990–1995 MHz frequency band. The aim is to assess the potential interference from this Starlink system to the satellite receivers of mobile satellite systems (MSSs), which are set to function within the 1980–2010 MHz range, and satellite receivers of the NTN systems, which are planned to operate in the n256 bands, defined by the 3GPP specifications. Through simulation-based evaluations, both single-entry and aggregate interference levels from Starlink to MSSs and NTN systems are comprehensively explored. To estimate the interference impact, several protection criteria were used. The study is in line with the Recommendations of International Telecommunication Union (ITU-R) and common approaches that are used when performing compatibility studies between satellite systems. The findings of this study demonstrate the feasibility of utilizing the n25 band for NTN direct-to-device services.
Journal Article
Alexander PastukhVTValery Tikhvinskiy
Valery TikhvinskiyEDEvgeny- Devyatkin
Evgeny- Devyatkin
Kulakayeva AigulThis work presents sharing studies between 5G networks and point-to-point fixed service in the 6425–7125 MHz band. In this research, we provide simulations of interference from 5G downlink and uplink to fixed service in the frequency band 6425–7125 MHz. We evaluated several scenarios of interference, which include cross-border scenarios, as well as scenarios of interference within the borders of one administration. The obtained results of this work are presented as protection distance and frequency offsets that are required in order to achieve compatibility between 5G and FS in the 6425–7125 MHz band. The spectrum engineering techniques presented in this research can help different companies and regulatory administrations in their spectrum management and frequency regulation activities and seriously improve the efficiency of implementation for 5G technologies.
Journal Article
Alexander PastukhVTValery Tikhvinskiy
Valery TikhvinskiyEDEvgeny Devyatkin
Evgeny DevyatkinAKArtyom Kostin
Artyom KostinFuture deployment of 5G NR base stations in the 6425–7125 MHz band raises numerous concerns over the long-term impact on the satellite transponders located in geostationary orbit. To study this impact and understand whether 5G NR may cause adverse effect to the spaceborne receivers, the research which estimated the interference levels to the satellite bent pipe links was done. The study presents the evaluation of aggregate interference from 5G NR base stations located inside the victim satellites’ footprints using Monte-Carlo analysis and calculation of signal-to-noise degradation and bit error rates of the fixed-satellite service (FSS) bent-pipe transponders for each scenario. The results of the study showed the feasibility of co-existence between 5G NR and satellite systems in the 6425–7125 MHz bands, and that no negative impact on the performance of the satellite links is expected.
20 October 2021
Conference Paper
Alexander PastukhEDEvgeny Deviatkin
Evgeny Deviatkin
VTValery Tikhvinskiy
Valery Tikhvinskiy
AKAigul Kulakaeva
Aigul Kulakaeva
This work presents compatibility studies between 5G IoT networks and point-to-point fixed service in the 6425-7125 MHz band. This includes a discussion of the current sharing studies in ITU-R. We evaluated co-channel interference of 5G IoT to fixed service considering urban and suburban deployment of 5G IoT, different antenna heights of fixed service. The study includes sensitivity analysis with several protection criteria. The results represent required protection distances between receiving fixed service stations and deployed 5G IoT networks for different deployment scenarios.
About Me
Alexander Pastukh has over 15 years of experience in the telecommunication industry and spectrum engineering. He has worked in Geyser-Telecom, Samsung Electronics, St. Petersburg Institute of Telecommunications, and Radio Research and Development Institute. Since 2012 Alexander has actively participated in the ITU-R working parties, in particular WP 5D and WP 1A, where he contributed much to developing LTE and 5G technologies. He also has over ten years of experience coordinating satellite services in ITU-R, where he filed and defended frequency assignments of several Russian satellite systems, including Glonass and Gonets. Alexander participated in joint projects with the world’s leaders in the satellite industry, such as Inmarsat and Iridium. In CEPT, he had extensive experience participating in the SE43 group, developing sharing conditions for cognitive radio technologies operating in white spaces. At a national level, he has produced several methodologies of compatibility studies between 5G and satellite services that the Russian spectrum regulators adopted. He has many publications related to sharing studies of 5G systems with other services. Alexander’s central areas of interest are LTE, 5G, 6G technologies, satellite communication technologies, and short-range device technologies.