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This paper presents the work conducted as part of doctoral research carried out at ISAE and ONERA on dynamic Radio Resource Management techniques for DVB-RCS systems using Fade Mitigation Techniques at Ka band. For a system using Adaptive Coding and Modulation at its physical layer the problem of optimally apportioning the satellite carriers' among the many different waveforms, or modes, available...
Tabatinga is a SATNEX initiative aimed at defining and designing a DVB-S2/RCS WiMAX system to provide access network services over the Amazonian region of Brazil at Ku band. This paper summarizes the work done on the physical and MAC layer aspects of that system.
Current broadband satellite systems supporting DVB-RCS at Ku band have static physical layer in order not to complicate their implementation. However at Ka band frequencies and above an adaptive physical layer wherein the physical layer parameters are dynamically modified on a per user basis is necessary to counteract atmospheric attenuation. Satellite radio resource management (RRM) at the medium...
For satellite systems offering broadband and telecom services at Ka band frequencies and above Fade Mitigation Techniques (FMT), in particular Adaptive Modulation and Coding (ACM), are essential to improve the system capacity. One of the important aspects of ACM from a physical and MAC layer perspective is the choice of transmission modes to be used during the system operation that would achieve the...
Efficient utilization of the satellite radio resource is of paramount importance to a satellite system's performance and economic competitiveness. The likely use of Ka band and above frequencies for future satellite systems and the need for a better quality of service (QoS) complicate the radio resource management process especially in the return link of a satellite system, one that connects the user...
The channel state of a satellite RF link is best provided as the Signal to Noise ratio (SNR) estimate of the received signal. This form of channel state is utilised by satellite capacity optimization techniques like Adaptive Coding and Modulation (ACM), which comes under the hood of Fade Mitigation Techniques (FMT). The performance of the SNR estimation algorithm, used as the channel state estimator,...
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