Emulation of end-to-end communications systems in railway scenarios: physical layer results

Abstract

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Emulation of Radio Technologies for Railways: A Tapped-Delay-Line Channel Model for Tunnels

“…Several were found in many different scenarios (as we will see in detail later) but not for tunnels. There are many measurement campaigns and channel models for tunnels [12]- [17] but no one of them is TDL-based. The reason for this is that in this environment there are many multipath components (MPC) very close together and, in order to provide an accurate and useful TDL-based channel model, the needed resolution in the time-domain is very demanding (around 1 ns), which implies 1 GHz bandwidth for the channel sounder [18], [19].…”