Cognitive radio for high speed railway through dynamic and opportunistic spectrum reuse

The integration of all the heterogeneous wireless networks deployed along European railway lines constitutes a key technical challenge to improve global efficiency of railway system. Emerging Cognitive Radio (CR) technologies can answer this challenge. The paper presents the first results obtained in the ANR project CORRIDOR (Cognitive Radio for High Speed Railway through Dynamic and Opportunistic spectrum Reuse) which is the first research project devoted to CR systems for Railway in France, taking into account very demanding railway applications: GSM-R which is the radio link of the ERTMS system, and other operational needs such as video surveillance of the inside of trains, data related to maintenance and Internet on board for passengers.