




| It turned out that the application of flexible Adaptive Coding and Modulation (ACM) leads to a significant increase in the efficiency and capacity of the system when compared to a system with a fixed physical layer. It has been shown that the proposed physical layer adaptation strategy leads to a system efficiency loss of only about 5% considering the transparent forward link for the transparent return link. The analysis results indicate an acceptable loss of about 20% can be achieved. Furthermore, it has been demonstrated that the application of FMT to DVB-S forward and future RCS return link is supported by today's signalling. However, a versatile encapsulation of IP datagrams over the Generic Stream (GS) interface would offer a better exploitation of the improved physical layer capacity. In a follow-on project "Resources Management using Adaptive Fade Mitigation Techniques (FMT) in DVB-RCS Multi-Beam Systems”, the same team, now lead by Triagnosys and completed by DLR and Nera, currently proposes and analyses radio resource management schemes for DVB-S2/RCS like systems that take into account adaptive coding and modulation for fade mitigation and guarantee quality of service for different services. |
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| Copyright AUDENS ACT, Triagnosys |