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

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

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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.

Inspec keywords: radio transmitters; cochannel interference; telecommunication traffic; precoding; satellite communication; radio receivers

Other keywords: NCRS strategies; magnitude channel state information at the transmitter; adjacent beam resource sharing; aggressive frequency-reuse scheme; noncoherent rate-splitting; uneven traffic demand scenario; cold neighbouring beams; multibeam satellite systems; cochannel interference; rate-splitting approach; CSIT precoding schemes

Subjects: Codes; Satellite communication systems; Electromagnetic compatibility and interference

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