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## Adjacent beams resource sharing to serve hot spots: a rate-splitting approach

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Advances in Communications Satellite Systems Proceedings of The 36th International Communications Satellite Systems Conference (ICSSC-2018) — Recommend this title to your library

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This work addresses the uneven traffic demand scenario in multi-beam satellite svstems, in which a hot-spot beam is surrounded bv cold beams. After partitioning the hotspot beam in different sectors, resource pulling from cold neighbouring beams is allowed following an aggressive frequencv-reuse scheme. As a consequence, the level of the co-channel interference within the hot-spot beam increases. A scheme known as Non-Coherent Rate-Splitting (NCRS) is emploved to cope with this interference, based on the exclusive use of magnitude channel state information at the transmitter (CSIT). The receiver complexitv is increased with respect to full CSIT precoding schemes, which are considered for benchmarking purposes. Different NCRS strategies are analvzed and compared with several partial and full CSIT schemes. The proposed solution not onlv shows an improvement with respect to partial CSIT benchmarks, but also displavs a competitive performance against full CSIT precoders.

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