LTE-Assisted Multi-Link MIMO Channel Characterization for High-Speed Train Communication Systems

Zhou, Tao; Cheng, Tao; Liu, Liu

doi:10.1109/tvt.2018.2875526

Cited by 25 publications

(13 citation statements)

References 26 publications

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“…Radio Science MIMO capacity (2 × 2) results with the actual measured results (2 × 2) of HSR scenarios in Luo et al (2013) and Zhou, Tao, and Liu (2018). The MIMO capacity of HSR scenario is about 5 bit/s/Hz when SNR is 10 dB, which is almost similar to that in a vacuum tube.…”

Section: 1029/2020rs007067mentioning

confidence: 75%

“…This can be explained by the fact that the keyhole effect caused by a similar propagation environment leads to channel degradation (Almers et al, 2003). We compare the obtained MIMO capacity (2 × 2) results with the actual measured results (2 × 2) of HSR scenarios in Luo et al (2013) and Zhou, Tao, and Liu (2018). The MIMO capacity of HSR scenario is about 5 bit/s/Hz when SNR is 10 dB, which is almost similar to that in a vacuum tube.…”

Section: Channel Emulationmentioning

confidence: 99%

“…The rapid and ever‐increasing development of China's high‐speed railway (HSR) has been attracting worldwide attention for the last few years (Guan et al, 2018). To guarantee the security of the train operation, a reliable train‐to‐ground communication connection is crucial not only to the train control operation but also to the passenger's voyage experience (Salous, 2013; Zhou et al, 2017; Zhou, Tao, Salous, & Liu, 2018a; Zhou, Tao, & Liu, 2018; Zhou et al, 2018c; Zhou et al, 2019). Currently, some works have investigated the wireless communication performance as the train velocity increases dramatically and the corresponding results indicate that a performance degradation will appear sharply at a high velocity (Xu et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Position‐Based Wireless Channel Characterization for the High‐Speed Vactrains in Vacuum Tube Scenarios Using Propagation Graph Modeling Theory

et al. 2020

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Wireless channel modeling is regarded as a pivotal research topic, since the analysis and evaluation of the wireless communication system requires a reliable model of the channel impulse response (CIR). This paper presents a novel and practical study on the position-based radio propagation channel for high-speed vactrains in the vacuum tube scenarios using the propagation graph channel modeling theory. Based on the Lambertian scattering pattern, the propagation graph channel modeling method considers the diffusion effect of radio waves. A multiple-input multiple-output (MIMO) wideband system channel is emulated for obtaining the virtual channel data. During the emulation process, the line-of-sight (LoS), single-bounced and double-bounced components are considered to yield the virtual CIR. Then, small-scale fading properties such as K factor, time delay spread (DS), and Doppler frequency feature are parameterized particularly, which presents dynamic variances at different train locations. Moreover, the simulation performance analysis of the MIMO system focuses on the ergodic capacity and the singular value spread (SVS). The corresponding results indicate a MIMO capacity performance degradation in this scenario. The proposed model can facilitate the reliable simulation and evaluation of MIMO systems for the high-speed vactrains in the vacuum tube scenarios.

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Section: 1029/2020rs007067mentioning

confidence: 75%

Section: Channel Emulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Position‐Based Wireless Channel Characterization for the High‐Speed Vactrains in Vacuum Tube Scenarios Using Propagation Graph Modeling Theory

et al. 2020

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“…Based on this theory, the high-order mode gradually decays and disappears as the distance between transmitter and receiver increases, only leaving the low-order mode. Due to this reduction of modes, the signal subspace of the Multiple-Input, Multiple-Output (MIMO) channel matrix is decayed, resulting in a decrease in the capacity of the MIMO channel, that is, the keyhole effect [27][28][29]. In addition, if the leaky waveguide is adopted for wireless coverage, the leaky wave propagation coupling characteristics will be completely different.…”

Section: Key Challenges Of Vactrain's Wireless Communicationsmentioning

confidence: 99%

Broadband Wireless Communication Systems for Vacuum Tube High-Speed Flying Train

et al. 2020

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A vactrain (or vacuum tube high-speed flying train) is considered as a novel proposed rail transportation approach in the ultra-high-speed scenario. The maglev train can run with low mechanical friction, low air resistance, and low noise mode at a speed exceeding 1000 km/h inside the vacuum tube regardless of weather conditions. Currently, there is no research on train-to-ground wireless communication system for vactrain. In this paper, we first summarize a list of the unique challenges and opportunities associated with the wireless communication for vactrain, then analyze the bandwidth and Quality of Service (QoS) requirements of vactrain’s train-to-ground communication services quantitatively. To address these challenges and utilize the unique opportunities, a leaky waveguide solution with simple architecture but excellent performance is proposed for wireless coverage for vactrains. The simulation of the leaky waveguide is conducted, and the results show the uniform phase distribution along the horizontal direction of the tube, but also the smooth field distribution at the point far away from the leaky waveguide, which can suppress Doppler frequency shift, indicating that the time-varying frequency-selective fading channel could be approximated as a stationary channel. Furthermore, the train-to-ground wireless access architectures based on leaky waveguide are studied and analyzed. Finally, the moving scheme is adopted based on centralized, cooperative, cloud Radio Access Network (C-RAN), so as to deal with the extremely frequent handoff issue.

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“…Channel characterization is important for LTE‐R system design. Some measurements (such as Chen et al, ; Ji et al, ; Nielsen et al, ; Yang et al, ; Zhou et al, , ; Zhou, Tao & Liu, ; Zhao et al, ) use the frequency around 2 GHz for LTE‐R channel characterization. However, as shown in He et al (), the frequency over 2 GHz is mostly considered in Europe and Korea.…”

Section: Introductionmentioning

confidence: 99%

Measurement and Modeling of LTE‐Railway Channels in High‐Speed Railway Environment

Wen

et al. 2020

Radio Science

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High-speed railway (HSR) is becoming one of the most effective and important transportation modes. To ensure the safety of HSR, a stable communication system is necessary. The understanding of propagation characteristics of radio channel is important for HSR communication system design. In this paper, a wideband measurement in suburban HSR scenarios at 460 MHz is presented. Some typical channel parameters such as the large-scale fading, Ricean K factor, power-delay profile, and root-mean-square delay spread are extracted from the measurement data. The different distributions of small-scale fading are also compared. The relationships between the channel parameters and the distance of transmitter (base station) and receiver are also explored. The results could provide a reference for the design and evaluation of HSR communication network, especially for the Long-Term-Evolution (LTE)-railway system.

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LTE-Assisted Multi-Link MIMO Channel Characterization for High-Speed Train Communication Systems

Cited by 25 publications

References 26 publications

Position‐Based Wireless Channel Characterization for the High‐Speed Vactrains in Vacuum Tube Scenarios Using Propagation Graph Modeling Theory

Position‐Based Wireless Channel Characterization for the High‐Speed Vactrains in Vacuum Tube Scenarios Using Propagation Graph Modeling Theory

Broadband Wireless Communication Systems for Vacuum Tube High-Speed Flying Train

Measurement and Modeling of LTE‐Railway Channels in High‐Speed Railway Environment

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