Title :
Natural wave propagation in subway tunnels at mobile communications frequencies
Author :
Didascalou, D. ; Maurer, J. ; Wiesbeck, W.
Author_Institution :
Inst. fur Hochstfrequenztech. & Elektron., Karlsruhe Univ., Germany
Abstract :
A measurement campaign has been carried out in the Berlin subway to characterize EM-wave propagation in underground railroad tunnels. The received power levels at 945 MHz, and 1853.4 MHz are used to evaluate the attenuation and the fading characteristics in a curved, arched-shaped tunnel. The measurements are compared to ray-optical modelling results. It is shown that the geometry of a tunnel, especially the cross-sectional shape and the course, is of major impact on the propagation behaviour and thus on the accuracy of the modelling
Keywords :
UHF radio propagation; electromagnetic wave absorption; electromagnetic wave scattering; fading; fading channels; land mobile radio; 1853.4 MHz; 945 MHz; Berlin subway; EM-wave propagation; attenuation; curved arched-shaped tunnel; fading; natural wave propagation; subway tunnels; underground railroad tunnels; Antenna measurements; Attenuation; Frequency measurement; Mobile communication; Optical transmitters; Pulse measurements; Radio transmitters; Receiving antennas; Testing; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference Proceedings, 2000. VTC 2000-Spring Tokyo. 2000 IEEE 51st
Conference_Location :
Tokyo
Print_ISBN :
0-7803-5718-3
DOI :
10.1109/VETECS.2000.851624
