  SatNEx IV project aims at studying medium and long term directions of
satellite telecommunication systems for any of the commercial or institutional
applications that can be considered appealing by key players although still not
mature enough for attracting industry or initiating dedicated ESA R&D
activities. This paper summarizes the first year activities identified as very
promising techniques for next generation satellite communication systems.
Concretely, very high throughput satellite trunking, physical layer advances
for full-duplex and multipolarization systems, network coding applications and
multiple access schemes for information centric networking are briefly
presented. For all the activities, we identify the scenarios under study so as
the preliminary technical solutions to be further investigated.
