Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Measurements and Modeling of Distribuited Antenna Systems in Railway Tunnels
Año:2007
Áreas de investigación
  • Procesado y análisis de la señal
Datos
Descripción
This paper covers some of the work carried out in the planning of the Global System for Mobile Communication for Railway (GSM-R) of the tunnels on the new high-speed trains in Spain. Solutions based on distributed antenna systems have been tested by installing several 900-MHz transmitters inside and out-side of a 4000-m tunnel and measuring the propagation in different conditions. The measurements have been used to model the effects of tunnel propagation, including curves, trains passing from the outside to the inside, and the effect of two trains passing inside the tunnel. All cases have been tested by comparing solutions using isofrequency and multifrequency distributed transmitters inside the tunnel. The improvements of signal-to-noise ratio and the reduction of the blocking effects of two trains passing have demonstrate the advantages of using isofrequency distributed antenna systems in tunnels. Finally, a complete propagation model combining both modal analysis and ray tracing has been applied to perdict the propagation loss inside and outside theese tunnels, and results have been compared with the measurements. The model has proven to be very useful for radio planning in new railway networks.
Internacional
Si
JCR del ISI
Si
Título de la revista
IEEE T VEH TECHNOL
ISSN
0018-9545
Factor de impacto JCR
1,191
Información de impacto
Volumen
56
DOI
Número de revista
5
Desde la página
2870
Hasta la página
2879
Mes
SEPTIEMBRE
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Javier M. Cruz
  • Autor: Jose Ignacio Alonso Montes (UPM)
  • Autor: César Briso Rodríguez (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Microondas y Radar
  • Departamento: Señales, Sistemas y Radiocomunicaciones
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