Measurements and analysis of large-scale fading characteristics in curved subway tunnels at 920 MHz, 2400 MHz, and 5705 MHz

K Guan, B Ai, Z Zhong, CF Lopez… - IEEE Transactions …, 2015 - ieeexplore.ieee.org
Wave propagation characteristics in curved tunnels are of importance for designing reliable
communications in subway systems. This paper presents the extensive propagation …

A hybrid ray-tracing/vector parabolic equation method for propagation modeling in train communication channels

X Zhang, N Sood, JK Siu… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
In recent years, various techniques have been applied to modeling radio-wave propagation
in railway networks, each one presenting its own advantages and limitations. This paper …

A Gaussian beam approximation approach for embedding antennas into vector parabolic equation-based wireless channel propagation models

X Zhang, CD Sarris - IEEE Transactions on Antennas and …, 2017 - ieeexplore.ieee.org
Vector parabolic equation (VPE) methods have been widely applied to the modeling of radio-
wave propagation in tunnel environments, offering high computational efficiency and fidelity …

Application of polynomial chaos to quantify uncertainty in deterministic channel models

ACM Austin, N Sood, J Siu… - IEEE transactions on …, 2013 - ieeexplore.ieee.org
A non-intrusive formulation of the polynomial chaos method is applied to quantify the
uncertainties in deterministic models of the indoor radio channel. Deterministic models …

Error analysis and comparative study of numerical methods for the parabolic equation applied to tunnel propagation modeling

X Zhang, CD Sarris - IEEE Transactions on Antennas and …, 2015 - ieeexplore.ieee.org
Parabolic equation (PE) methods have been widely applied to the modeling of wireless
propagation in tunnel environments. However, the relevant literature does not include …

Integrating physics-based wireless propagation models and network protocol design for train communication systems

N Sood, S Baroudi, X Zhang… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
Physics-based wireless propagation modeling and network protocol design have evolved
over decades as orthogonal areas in communication systems research. This fragmented …

Measurement and analysis of extra propagation loss of tunnel curve

B Ai, K Guan, Z Zhong, CF Lopez… - IEEE transactions on …, 2015 - ieeexplore.ieee.org
Wave propagation experiences extra loss in curved tunnels, which is highly desired for
network planning. Extensive narrow-band propagation measurements are made in two …

Advances in computational modeling of EMC/EMI effects in communication-based train control (CBTC) systems

X Zhang, W Hou, CD Sarris - IEEE Electromagnetic …, 2021 - ieeexplore.ieee.org
Communication-based train control (CBTC) systems are aimed at providing control and
signaling for rail transportation. These operate in environments that include tunnel and open …

Calibration of a 3-D ray-tracing model in railway environments

X Zhang, N Sood, J Siu… - 2015 IEEE International …, 2015 - ieeexplore.ieee.org
A three-dimensional ray-tracing model is calibrated using measured data from railway
environments. First, the input geometry is extracted by systematically adding incremental …

Simulation and analysis of propagation characteristics for tunnel train-ground communications at 1.4 and 40 GHz

T Zhou, H Li, R Sun, Y Wang, L Liu, C Tao - IEEE Access, 2019 - ieeexplore.ieee.org
This paper focuses on the analysis of propagation characteristics for train-ground
communication (TGC) systems in tunnel scenarios at both low frequency and millimeter …