In recent years, the use of massive multiple-input multiple-output (MIMO) systems and higher
frequency bands for next-generation urban rail transportation systems has emerged as an …

The effect of delay spread (DS), the specular multipath components (SMCs), and the impact
of dense multipath components (DMCs) on multiple-input/multiple-output (MIMO) system …

This paper presents broadband simulations and measurements of Millimeter-Waves (mm-
wave) propagation in a rugged underground mine environment. Mathematical formulation …

In order to meet the higher data transmission rate requirements of subway communication
services, the millimeter wave (mmWave) broadband communication is considered as a …

In this paper, we report the results of radio propagation characterisation in a pedestrian
tunnel with different crowd densities at 24 GHz using commercial ray-tracing software called …

We specify the corresponding relationships between eigenmodes, natural modes, and
characteristic modes of perfectly electric conducting (PEC) bodies. The internal resonant …

In this paper, we report the results of a field measurement campaign carried out inside a
pedestrian tunnel at 24 GHz in two conditions, namely, empty tunnel scenario and busy …

The rail transportation industry has seen a growing interest in the use of radio-access
technology (RAT) for critical and noncritical services to improve safety/reliability …

This paper presents channel propagation characteristics of different multiple‐input multiple‐
output (MIMO) systems using ray tracing approach in a confined area at 1.8 GHz according …

This study investigates the channel performance of a 28 GHz multiple‐input–multiple‐output
(MIMO) system in a subway tunnel, using ray‐tracing‐based simulations and experimental …