An APD‐Based Evaluation on the Effect of Transient Disturbance over Digital Transmission

Geng, Xin; Wen, Yinghong; Zhang, Jinbao

doi:10.1049/cje.2019.09.007

Cited by 4 publications

(2 citation statements)

References 14 publications

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“…Therefore, looking at the weakness of the swept frequency-domain method and achieving a better definition of the susceptibility of modern digital communication systems (DCSs), the Amplitude Probability Distribution (APD) method is being studied [69][70][71][72][73], e.g., in place of other types of detectors, such as the QP. The APD quantifies the amount of time that the measured envelope r(t) of an interfering signal exceeds a given level [69], or, in other words, it is the complement to unity of the cumulative distribution function of the envelope.…”

Section: Time Domain and Amplitude Probability Distributionmentioning

confidence: 99%

Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

Mariscotti

2021

Energies

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Accurate and comprehensive methods for the assessment of radiated electromagnetic emissions in modern electric transportation systems are a necessity. The characteristics and susceptibility of modern victim signaling and communication radio services, operating within and outside the right-of-way, require an update of the measurement methods integrating or replacing the swept frequency technique with time domain approaches. Applicable standards are the EN 50121 (equivalent to the IEC 62236) and Urban Mass Transport Association (UMTA) with additional specifications from project contracts. This work discusses the standardized methods and settings, and the representative operating conditions, highlighting areas where improvements are possible and opportune (statistical characterization of measurement results, identification and distinction of emissions and line resonances, and narrowband and broadband phenomena). In particular for the Electromagnetic Compatibility (EMC) assessment with new Digital Communication Systems, the characterization of time distribution of spectral properties is discussed, e.g., by means of Amplitude Probability Distribution and including time distribution information. The problem of determination of site and setup uncertainty and repeatability is also discussed, observing on one hand the lack of clear indications in standards and, on the other hand, the non-ideality and intrinsic variability of measurement conditions (e.g., rolling stock operating conditions, synchronization issues, and electric arc intermittence).

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Section: Time Domain and Amplitude Probability Distributionmentioning

confidence: 99%

Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

Mariscotti

2021

Energies

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“…Previous research has proved that the statistics of EMI in the time-domain are directly related to the error performance of digital radiocommunication systems with different modulation and coding schemes (MCSs). Some of them has focused on the interfered digital modulation signals, and the maximum bit error probability of the radio receiver was derived based on the APD of arbitrary interference [18][19][20], without consideration of the forward error correction (FEC) coding gain. As the coding gain is closely related to the signal-to-interference-plus-noise ratio (SINR) of a code block, which is determined by both the amplitude and duration of a burst, the impact on RSTT with FEC is much more complex than digital modulation signals.…”

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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Research on Electromagnetic Compatibility of Wireless Transmission in High-Speed Railway Train Control System Based on Knowledge Graph

Geng,

Dong,

Kong

et al. 2024

2024 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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An APD‐Based Evaluation on the Effect of Transient Disturbance over Digital Transmission

Cited by 4 publications

References 14 publications

Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

Critical Review of EMC Standards for the Measurement of Radiated Electromagnetic Emissions from Transit Line and Rolling Stock

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

Research on Electromagnetic Compatibility of Wireless Transmission in High-Speed Railway Train Control System Based on Knowledge Graph

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