Analysis of Adjacent Channel Interference between Terrestrial and Non-Terrestrial 5G Networks Over 28 GHz Millimeter-wave Band

Authors

DOI:

https://doi.org/10.14209/jcis.2025.6

Keywords:

5G, Terrestrial, Non-terrestrial, Satellite, interference, Coexistence, millimeter Wave, Ka-Band

Abstract

This letter assesses the interference between terrestrial 5G network (TN-5G) and non-terrestrial 5G network (NTN-5G) operating in millimeter wave Ka-band. Specifically, the impact that NTN-5G causes on TN-5G system in the 28 GHz band is analyzed. Simulations using Monte-Carlo method are performed to obtain the interference power in the victim system, for different guard bands. Also, experiments using laboratory equipment are performed to analyze the BLER and Throughput of the user equipment (UE) under different interference power levels. The results showed that interference from NTN-5G may impact the TN-5G, depending on the adopted guard band. Ideally, guard bands above 100 and 180 MHz are recommended for TN-5G operating with 50 and 100 MHz bandwidths, respectively. On the other hand, experiments showed that UE performance can be severely degraded by interference power above -108 dBm. Finally, it is concluded that TN-5G and NTN-5G can coexist since the appropriate guard bands are considered, depending mainly on the bandwidth of the victim system.

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Author Biographies

Dércio M. Mathe, Sidia Institute of Science and Technology, Manaus, Brazil

Research and development coordinator at Sidia Institute of Science and Technology, working in the area of development in mobile communications. He holds a doctorate in electrical engineering in telecommunications from the Federal University of Pará. He has experience in cellular networks, radio, and television systems. With research on technologies applied to fourth and fifth-generation mobile broadband systems.

Daniel da S. Souza, SIDIA

Daniel da S. Souza received a Ph.D. degree in computing applied to telecommunications from the Federal University of Pará, Brazil, in 2023. He is a senior researcher and software developer at the SIDIA Institute of Science and Technology. His experience involves themes in mobile communications, highlighting Non-Terrestrial Networks, 4G, 5G, and beyond, with several published papers applying Artificial Intelligence and Multicriteria Decision Methods.

Bruno M. Pinheiro, Sidia Institute of Science and Technology, Manaus, Brazil

Bruno M. Pinheiro received a Ph.D. degree in computing applied to telecommunications from the Federal University of Rio Grande do Norte, Brazil, in 2021.  

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Published

2025-08-23

How to Cite

M. Mathe, D., da S. Souza, D., & M. Pinheiro, B. (2025). Analysis of Adjacent Channel Interference between Terrestrial and Non-Terrestrial 5G Networks Over 28 GHz Millimeter-wave Band. Journal of Communication and Information Systems, 40(1), 42–46. https://doi.org/10.14209/jcis.2025.6

Issue

Vol. 40 No. 1 (2025)

Section

Letters

License

Copyright (c) 2025 Dércio M. Mathe, Daniel da S. Souza, Bruno M. Pinheiro (Author)

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Received 2025-02-18
Accepted 2025-08-18
Published 2025-08-23