Chapter

Communication Technologies for Vehicles

Volume 6596 of the series Lecture Notes in Computer Science pp 11-22

An Experimental Study of Multi-radio Platform Coexistence in the 5 GHz Band for Railway Applications

  • Jorge HigueraAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , Elli KartsakliAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , Carlos ColladoAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , José M. González-ArbesúAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , Luis AlonsoAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , José Luis ValenzuelaAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , Andres LayaAffiliated withCarnegie Mellon UniversityDepartment of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC)
  • , Enrique FloresAffiliated withCarnegie Mellon UniversitySENER Ingeniería y Sistemas
  • , Isabel NavarroAffiliated withCarnegie Mellon UniversitySENER Ingeniería y Sistemas
    • , Raquel MartínezAffiliated withCarnegie Mellon UniversitySpanish Railway Infrastructure Administrator (ADIF)
    • , Jesús GonzálezAffiliated withCarnegie Mellon UniversityApplied Magnetism Institute (IMA), Complutense University of Madrid
    • , José HierroAffiliated withCarnegie Mellon UniversityApplied Magnetism Institute (IMA), Complutense University of Madrid
    • , Adrian VladAffiliated withCarnegie Mellon UniversityApplied Magnetism Institute (IMA), Complutense University of Madrid

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Abstract

This paper studies the practical challenges that arise due to the coexistence of two wireless technologies, both operating in the license-exempt 5 GHz band. In particular, WiFi and WiMAX equipment have been used in the experiments. The mutual interference caused by the two technologies operating in different but narrowly separated frequency channels has a negative impact on the performance of both systems. Further challenges are introduced when the two systems are in close physical proximity of each other or, in a more extreme scenario, share the same antenna as could be required in railway applications. This paper investigates these issues through a series of experimental tests based on a multi-radio platform testbed. The conclusions drawn from this study will be used as a base for the implementation of a multi-radio platform to provide communications between train and land in both directions in the context of the Spanish high-speed railway system.

Keywords

mutual interference wireless multi-radio platform multi-radio coexistence high-speed railway applications