Abstract
The profound knowledge of radio wave propagation is essential for the design and test of wireless communication systems especially in demanding environments and for mobile transmitters and receivers. In this article we provide an accurate description of the relevant propagation parameters for train-to-train scenarios considering typical environments such as railway stations, open field and hilly terrain with cutting. At the beginning of this contribution we shortly describe the comprehensive train-to-train measurement campaign which is the basis for all further evaluations. We treat the stationarity of the channel in time and frequency and derive power delay profiles, and the Doppler spectral densities. Furthermore, distance-variant statistics about the k-factor, delay spread and Doppler frequency spread are presented. We show that these parameters change very much for different environments and distances. For all stochastic channel parameters we propose distance dependent model parameters.
Highlights
R ELIABLE train-to-train (T2T) communication is a key technology for the generation of railway applications and control, and will enable the operation of new train concepts such as autonomously driving high speed trains and virtual coupling [1]
The influence of multipath components (MPCs) caused by interacting objects (IOs) on the T2T communication performance is an important aspect as we present
We investigated the propagation channel for train-to-train (T2T) communications
Summary
R ELIABLE train-to-train (T2T) communication is a key technology for the generation of railway applications and control, and will enable the operation of new train concepts such as autonomously driving high speed trains and virtual coupling [1]. The use of the IEEE 802.11p standard for T2T communications in railway environments was investigated with measurements in [9] and [10]. The recorded data sets encompass propagation data for the railway station, open field and hilly terrain with cutting environments. Based on these data sets, we analyze the time-variant behavior of the T2T propagation channel. We analyze measurement data of three data sets representing typical railway environments and investigate the quasi-stationarity in time and frequency. We derive measurement based time-variant stochastic channel parameters for T2T communications in C-band for large and small scale fading.
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