Simulation of the performance of a Ka-band VSAT videoconferencing system with uplink power control and data rate reduction to mitigate atmospheric propagation effects

摘要

The purpose of this paper is to evaluate the impact of propagationeffects at 20/30 GHz on the performances of the radio interface of aVSAT videoconferencing system and to demonstrate the interest toimplement Fade Mitigation Techniques in order to improve the linkavailability. Specifications and system requirements of the VSATnetwork are briefly described. System performances of the physicallayer are simulated using time-series data measured with the ESA'sOLYMPUS satellite. The simulations enable to implement and optimizeUp-Link Power Control and Data Rate Reduction, and to assess therelated link performance improvement.