Title :
Wideband radio channel measurements for train tunnels
Author :
Aikio, Pauli ; Gruber, Ralf ; Vainikainen, Pertti
Author_Institution :
New Radio Syst., Nokia Telecommun., Finland
Abstract :
We present and analyse the results of wideband radio channel measurements performed in tunnels. Both a high speed train tunnel and a smaller test tunnel have been investigated with both antennas and leaky feeders as fixed radiators. The results show typical features of the tunnel radio channel with typically low delay spread combined to significant slow fading of the LOS signal due to interferences. The delay spread may increase substantially during the fading dips
Keywords :
UHF radio propagation; delays; fading; horn antennas; land mobile radio; leaky wave antennas; radiofrequency interference; railways; 2.154 GHz; LOS signal; UHF; carrier frequency; delay spread; directive horn antenna; discone antenna; fading dips; fixed radiators; high speed train tunnel; interference; leaky feeders; low delay spread; radio propagation; slow fading; test tunnel; wideband radio channel measurements; Antenna feeds; Antenna measurements; Correlators; Delay; Directive antennas; Performance evaluation; Sampling methods; Testing; Wavelength measurement; Wideband;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686616
