Onboard Beam Generation for Multibeam Satellite Systems
Por:
Joroughi, V, Vázquez, MA, Pérez-Neira, AI, Devillers, B
Publicada:
1 jun 2017
Resumen:
This paper aims at designing an onboard beam generation process for a hybrid onboard on-ground multibeam satellite architecture. The proposed method offers a good tradeoff between total throughput and feeder link bandwidth requirements compared with pure on-ground systems. Full frequency reuse among beams is considered, and the beamforming at the satellite is designed for supporting interference mitigation techniques. In addition, in order to reduce the payload cost and complexity, this onboard beamforming is assumed to be constant and the same for forward and return link transmissions so that the same array-fed reflector can be used for forward and return links, leading to a substantial reduction of the payload mass. To meet all these requirements, a novel robust minimum mean square error optimization is conceived. The benefits of the considered scheme are evaluated with respect to the current approaches both analytically and numerically. Indeed, we show that with the DVB-RCS and DVB-S2 standards, our proposal allows increasing the total throughput within a range between 6% and 15% with respect to other onboard processing techniques in the return and forward link, respectively.
Filiaciones:
Joroughi, V:
Univ Vigo, Vigo 36310, Spain
Vázquez, MA:
Ctr Tecnol Telecomunicac Catalunya, Barcelona 08860, Spain
Pérez-Neira, AI:
Ctr Tecnol Telecomunicac Catalunya, Barcelona 08860, Spain
Univ Politecn Cataluna, ES-08034 Barcelona, Spain
Devillers, B:
Ctr Tecnol Telecomunicac Catalunya, Barcelona 08860, Spain
European Patent Off, Munich, Germany
Green Published, All Open Access; Green Open Access
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