Cost Effective Emulation of GEO Sat Channels

Documentation technique

Huyen Chi Bui, Laurent Franck.

This contribution is about the use of software-
defined radio (SDR) for channel emulation. Based on NI USRP
devices and the LabVIEW programming environment, we devised
an affordable RF channel emulator for geostationary satellite
transmission. It is able to process 2 x 1.6 MBaud in realtime
while adding thermal noise, phase noise and propagation delay
according to the system which is modelled. This extensible tool is
valuable for supporting teaching activities and it also serves as a
convenient test bench when devising new protocols and services
that are meant to run over satellite links.