Susceptibility of the GSM-R Transmissions to the Railway Electromagnetic Environment

Dudoyer, Stephen; Deniau, Virginie; Slimen, N. Ben; Adriano, Ricardo

doi:10.5772/36149

Cited by 3 publications

(10 citation statements)

References 6 publications

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“…Postprocessing was applied to these time records in order to extract, using a fast Fourier transform, the maximum power level induced by the transient signals in the GSM-R down-link frequency band (921-925 MHz). The obtained results, presented in [17], show that these transient events cause interferences whose power levels vary from −80 to −40 dBm over the GSM-R channels. Consequently, these interference power levels are comparable to the useful GSM-R signals received most of the time and have the potential to impair GSM-R reception.…”

Section: Disturbance Signals Present In the Railway Environmentmentioning

confidence: 91%

“…Considering these interference signals, the authors in [15], [16] and [17] present the results of another measurement campaign performed in Western France, on the on-board GSM-R antenna (located at 30 m from the pantograph). For this run, the measurements were performed using a fast sampling digital oscilloscope connected at the output port of a GSM-R antenna fixed on the roof of the train.…”

Section: Disturbance Signals Present In the Railway Environmentmentioning

confidence: 99%

“…According to [4], the associated sensitivity is −95 dBm and, in [17], the transient signals induce interfering power levels up to −40 dBm at the MS receiver antenna input. Therefore, it is not sufficient to monitor the power of the EM interference alone.…”

Section: Relevant Radiofrequency Signal Characteristicsmentioning

confidence: 99%

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Classification of Transient EM Noises Depending on their Effect on the Quality of GSM-R Reception

Dudoyer

Deniau

Ambellouis

et al. 2013

IEEE Trans. Electromagn. Compat.

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The Global System for Mobile communications— Railways (GSM-R) is being deployed in different countries to develop an efficient communication-based train control (CBTC) system. GSM-R participates to achieve railways interoperability, replacing noninteroperable CBTC on existing networks and, thus, facilitating cross-border train circulations. GSM-R ensures voice and data transmissions between trains and control centers and also between trains. As any radio equipment, it is subject to electro- magnetic (EM) disturbances present in the railway environment. Therefore, the quality of GSM-R transmissions can deteriorate. It is then important to evaluate and predict the effect of these dis- turbances in order to avoid any loss of train operational capacity. After an overview of the methods used for the characterization of the EM environment, we describe the GSM-R and the EM distur- bances that can affect its operation. The reasons why the existing characterization methods are not fully adapted to the GSM-R are highlighted. The general principle of classification is briefly re- called. The rest of this paper develops the methodology proposed to perform the classification of transient EM noises and the pre- sentation of a test bench and its associated experimental results. Finally, an application to an add-on electromagnetic compatibility supervising equipment installed on board the train is described

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Section: Disturbance Signals Present In the Railway Environmentmentioning

confidence: 91%

Section: Disturbance Signals Present In the Railway Environmentmentioning

confidence: 99%

See 1 more Smart Citation

Classification of Transient EM Noises Depending on their Effect on the Quality of GSM-R Reception

Dudoyer

Deniau

Ambellouis

et al. 2013

IEEE Trans. Electromagn. Compat.

Self Cite

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“…where c cod , b BCR and c BCR are decided by the coding scheme. In this way, the BLER ave during the disturbance n(t) is obtained by (10).…”

Section: Case T P << Qmentioning

confidence: 99%

“…In the HSR EM environment, the EM disturbances can hardly be eliminated from the source, nor be prevented through the coupling path. Thus, the on-board RSTT devices are extremely vulnerable to the surrounding EM disturbances, which may cause transmission errors and even lead to critical communication failures [10]. The communication failures directly cause the operational consequences of the rail network, such as jammed traffic and major delays, which may further result in bad economic and commercial effect [6] and even potential threat to the safety of passengers [11].…”

Section: Introductionmentioning

confidence: 99%

A Method to Supervise the Effect on Railway Radio Transmission of Pulsed Disturbances Based on Joint Statistical Characteristics

et al. 2020

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Radiocommunication systems between train and trackside (RSTT) carry essential information for train operations between on-board radio equipment and the related radio infrastructure located along the trackside, such as the train control, voice dispatching, command, operational information as well as the monitoring data. In a high-speed railway environment, the electromagnetic interference (EMI) has been a major threat to RSTT, and may result in critical security issues for railway transportation and even passengers. Given the complex scenario of the high-speed railway, it is significant to monitor the impact of disturbances in order to guarantee the quality of RSTT. On one hand, RSTT operate in a complex electromagnetic environment where transient disturbances coexist with permanent ones, and they both vary dramatically while the train is running. On the other hand, various radiocommunication technologies have been used for railway applications, featuring forward error-correction codes to resist EMI. Therefore, this paper puts forward a novel approach to evaluate the impact on radio transmission based on the joint statistical characteristics of time-varying EMI. This approach applies a dynamic effective signal-to-interference-plus-noise ratio mapping model to establish the relation between the block error performance of on-board radio and the joint statistical characteristics of disturbances with a mutual information-based metric. Simulations on radio transmission using Turbo coding and low-density-parity-check coding under various interferences indicate that this approach is effective to evaluate the degradation of transmission signal with forward error-correction coding due to EMI with different characteristics.

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EMI and IEMI Impacts on the Radio Communication Network of Electrified Railway Systems: A Critical Review

Fan

Zhang

2023

IEEE Trans. Veh. Technol.

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The electrified railway system has been rapidly rolled out in many countries and regions in the past decades, along with the transportation decarbonization agenda. The latest development in power electronics and electrical railway systems has increased the risks of electromagnetic interference (EMI) and intentional EMI (IEMI) emissions, introducing new challenges to the railway radio communications network. It is vital to have a robust and reliable railway communication network that can be resistant and immune to these interferences for the safe and efficient operation of modern railway systems. Yet, the source and new features of EMI and IEMI emerging along with the latest technological development have not been thoroughly investigated and understood. This review paper aims to fill the research gap. First, railway communications systems are introduced. The EMI and IEMI are discussed at the whole system level, and the corresponding impacts on the signaling and communication systems are reviewed comprehensively. Current electromagnetic compatibility (EMC) methods are surveyed, and challenges of tackling the impacts of EMI and IEMI on the signaling and communication systems are discussed. Finally, future research directions are outlined.

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Susceptibility of the GSM-R Transmissions to the Railway Electromagnetic Environment

Cited by 3 publications

References 6 publications

Classification of Transient EM Noises Depending on their Effect on the Quality of GSM-R Reception

Classification of Transient EM Noises Depending on their Effect on the Quality of GSM-R Reception

A Method to Supervise the Effect on Railway Radio Transmission of Pulsed Disturbances Based on Joint Statistical Characteristics

EMI and IEMI Impacts on the Radio Communication Network of Electrified Railway Systems: A Critical Review

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