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

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...

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Bibliographic Details
Published in:Applied sciences 2020-07, Vol.10 (14), p.4814
Main Authors: Geng, Xin, Wen, Yinghong, Zhang, Jinbao, Zhang, Dan
Format: Article
Language:English
Subjects:
amplitude probability distribution
Antennas
Coding
Communication
Computer simulation
Disturbances
electromagnetic disturbance
Electromagnetic interference
Environmental monitoring
Error correction
interference effect
Locomotives
Mapping
Methods
Noise
Performance evaluation
pulse duration distribution
Pulse-duration modulation
Radio equipment
Radio transmission
radio transmission between train and trackside
Railroads
Receivers & amplifiers
Security
Simulation
Statistics
Voice control
Wireless networks
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Summary: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.
ISSN:2076-3417
2076-3417
DOI:10.3390/app10144814