Methodology of frequency resource utilization in the design of railway LTE-1800 TDD standard radio communications

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Abstract

When designing a digital network of technological railway radio communication based on the LTE-1800 TDD standard, as well as during frequency-territorial planning, the most relevant tasks are the use of frequency resource and ensuring electromagnetic compatibility (EMC) of the system. The paper considers the topical aspects of network construction and proposes a variant of frequency resource utilisation for railway transport taking into account EMC.

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About the authors

D. P. Lobeev

Петербургский государственный университет путей сообщения Императора Александра I

Author for correspondence.
Email: mladkevich@mail.ru

аспирант кафедры "Электрическая связь" 

Russian Federation

References

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  3. ГОСТ 33973-2016. Межгосударственный стандарт. Железнодорожная электросвязь. Поездная радиосвязь. Технические требования и методы контроля. М.: Стандартинформ, 2017.
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Supplementary files

Supplementary Files
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1. JATS XML
2. Fig.1. Frame structure at time duplex

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3. Fig.2. Slot structure at the physical level

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4. Fig.3. The structure of the resource block during the "down" transfer

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5. Fig.4. The location of the reference symbols in the resource block during transmission over the "down" line (DL)

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6. Fig.5. Channel resource allocation on the "up" line

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7. Fig.6. Service area during network design

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8. Fig.7. Sources of interference in the standard BS operation mode: a – time t1, when all BS are working "to transmit"; b – time t2, when all BS are working "to receive"

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9. Fig. 8. Forward transmission rate (Down) to wearable speakers without interference from other speakers, frame configuration No. 0

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10. Fig.9. Forward transmission rate (Down) to wearable speakers, taking into account interference from other BS, frame configuration No. 0

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11. 10. Map of the distribution of available types of modulation on the line down when taking into account in-system interference (green − 16 QAM, blue − QPSK)

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12. Fig.11. Forward transmission rate (Down) to wearable speakers, taking into account interference from other BS, frame configuration No. 1

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13. Fig.12. Reverse transmission rate (Up), wearable speakers, Frame configuration No. 1

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14. Fig.13. Frequency-territorial-time network plan

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15. Fig. 14. Bandwidth distribution map on the "down" line, taking into account interference, frame configuration No. 1

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16. Fig.15. Time synchronization of BS operation modes

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Copyright (c) 2025 Lobeev D.P.