Title :
DVB-S2 in Railway Environments: An Exploratory Study for Tunnel Coverage
Author :
Iubatti, Matteo ; Corazza, Giovanni E. ; Vanelli-Coralli, Alessandro ; Villanti, Marco
Author_Institution :
DEIS/ARCES, Bologna Univ.
Abstract :
In this paper we address the problem of DVB-S2 signal reliability in railway tunnel environments. We have focused our attention on the selection of the most suitable frequency band to be used in the tunnel coverage by gap fillers and on its impact on in-tunnel propagation and handover between satellite and gap fillers. The propagation characteristics, i.e. attenuation, of several bands in and out of the tunnel are provided adopting an EM (waveguide) approach. A handover procedure between satellite Ka/Ku band and selected ISM band for gap fillers is also proposed
Keywords :
digital video broadcasting; direct broadcasting by satellite; railway communication; DVB-S2; EM approach; ISM band; attenuation; frequency band; gap fillers; propagation characteristics; railway environments; satellite Ka/Ku band; signal reliability; tunnel coverage; Attenuation; Digital video broadcasting; Fading; Frequency; Geometry; Rail transportation; Ray tracing; Receiving antennas; Relays; Satellites; DVB-S2; ISM band selection; in-tunnel attenuation; railway tunnels; satellite/gap filler handover procedure; waveguide approach;
Conference_Titel :
Satellite and Space Communications, 2006 International Workshop on
Conference_Location :
Madrid
Print_ISBN :
1-4244-0118-6
Electronic_ISBN :
1-4244-0119-4
DOI :
10.1109/IWSSC.2006.255994
