Articles | Volume 3
Adv. Radio Sci., 3, 247–252, 2005
https://doi.org/10.5194/ars-3-247-2005
Adv. Radio Sci., 3, 247–252, 2005
https://doi.org/10.5194/ars-3-247-2005

  12 May 2005

12 May 2005

Investigations for broadband internet within high-speed trains

I. Gaspard and G. Zimmermann I. Gaspard and G. Zimmermann
  • T-Systems, BU Technologiezentrum, Am Kavalleriesand 3, 64295 Darmstadt, Germany

Abstract. Broadband IP-based multimedia services are rapidly growing and there is the trend to use these services everywhere. Due to the fact that passengers in long distance high speed trains have a very comfortable environment to use their own terminal equipment, e.g. laptops with IEEE802.11√óWLAN capability, it seems to be very promising to deliver broadband internet into trains. The challenge is the land-train connection where a high bit data rate link, e.g. 1Mbps in average in up- and downlink, has to be provided to enable several users within the train broadband internet access at the same time even at high speeds of the train. This paper describes a systematic approach starting at basic propagation measurements in a typical train environment and ending up with lab investigations by means of hardware channel simulation for different existing radio technologies which are candidates for the land-train connection.

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