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Next generation high throughput satellite systems are expected to rely on the deployment of a high number of beams in the user link, and therefore operate in an interference limited regime. This paper builds on the combination of advanced interference mitigation techniques and on-ground beamforming to cope with this increased level of interference among users. Focussing on the forward link of a multi-beam broadband satellite system, we consider the joint design of linear precoding and on-ground beamforming at the gateway. This joint design is modeled, and different linear precoding techniques are considered for comparison. The provided simulation results quantify the performance gain generated by this joint design with respect to considering precoding for a fixed on-board beamforming. The robustness of the considered scheme to channel estimation errors is also analyzed.
CitationDevillers, B.; Pérez, A.; Mosquera, C. Joint linear precoding and beamforming for the forward link of multi-beam broadband satellite systems. A: IEEE Global Communications Conference. "Globecom 2011". 2011, p. 1-6.
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