Impact of Proactive Retransmissions on Forward TCP Throughput Over DVB-S/S2 Railroad Satellite Links With Power Arches

High-speed trains are one of the major collective mobile communities that will exploit broadband satellite services. ETSI DVB-S/S2 and DVB-RCS specifications have enjoyed tremendous success and global acceptance. Recently, both EU and ESA have sponsored R&D programmes to introduce mobility adaptations to DVB-S2 and DVB-RCS specifications. Power supply arches that are equidistantly placed over railway tracks pose a specific challenge for satellite transmission to high-speed trains. These structures result in quasi-periodic and quasi-deterministic deep fades, which are particularly deteriorating to TCP throughput over high bandwidth-delay-product satellite links.