The prediction of radio signal transmission in tunnels is important for wireless
communication link design as it enables the delivery of optimum power to the intended …

Reliable and efficient communications are indispensable for vehicles in underground
environments. Underground wireless channels present a number of unique properties, such …

The curvature of tunnels introduces an extra loss in the wave propagation. A simulation and
measurement study are performed on the straight and the curved tunnels to investigate the …

In next‐generation radio communication systems, the use of higher frequency bands and the
massive multiple‐input‐multiple‐output (MIMO) systems has turned into hot research topics …

An important and typical scenario of radio propagation in a railway or subway tunnel
environment is the cascaded straight and curved tunnel. In this paper, we propose a joint …

In present-day society, train tunnels are extensively used as a means of transportation.
Therefore, to ensure safety, streamlined train operations, and uninterrupted internet access …

The vector parabolic equation (VPE) method is a very efficient methodology for high-fidelity
modeling of electromagnetic wave propagation. While the VPE has been widely applied to …

Electromagnetic interference (EMI) is an important issue that needs to be considered for the
safe operation of communication-based train control (CBTC) systems in railway …

This article presents an analysis of on-body radio channels at millimeter-wave frequencies
and possible solutions to reduce the path loss, particularly, at non-line of sight (NLoS) …

In the urban rail transit (URT) environment, the radio wave propagation prediction model
and communication system planning are very important. However, due to the complexity of …