DVB-S2 Reception On-Board of the High-Speed Trains

This paper analyzes part of the results of the tests done on a DVB-S2 link received on board a high speed train. The tests aimed at verifying the behavior of the DVB-S2 in the railway environment, which introduce line of sight (LOS) interruptions and variable fading, when different modcods and types of traffic are transmitted. Mainly, MPEG2 Transport Stream (TS) and IP/MPEG traffic has been transmitted in order to explore the limits of the technology. Additionally, qualitative and quantitative comparison of video transported via MEG2 TS and via IP has permitted to see the impact of the LOS interruptions on the reception of real time contents and the need for additional mitigation techniques.