%0 Journal Article %J IEEE Transactions on Communications %D 2021 %T Space-Time Rate Splitting for the MISO BC with Magnitude CSIT %A Carlos Mosquera %A Nele Noels %A Tomás Ramírez %A Màrius Caus %A Adriano Pastore %B IEEE Transactions on Communications %G eng %0 Conference Paper %B IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 25-28 May 2020, virtual event. %D 2020 %T Non-coherent rate-splitting for multibeam satellite forward link: practical coding and decoding algorithms %A Nele Noels %A Marc Moeneclaey %A Tomás Ramírez %A Carlos Mosquera %A Màrius Caus %A Adriano Pastore %B IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 25-28 May 2020, virtual event. %G eng %0 Conference Paper %B 36th International Communications Satellite Systems Conference (ICSSC) %D 2018 %T Adjacent Beams Resource Sharing to Serve Hot Spots : A Rate Splitting Approach %A Tomás Ramírez %A Carlos Mosquera %A Màrius Caus %A Adriano Pastore %A Nader Alagha %A Nele Noels %X
This work addresses the uneven traffic demand scenario in multi-beam satellite systems, in which a hot-spot beam
is surrounded by cold beams. After partitioning the hotspot beam in different sectors, resource pulling from cold
neighbouring beams is allowed following an aggressive frequency-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 employed to cope with this interference, based on the exclusive use of magnitude channel state information at the transmitter (CSIT).
The receiver complexity is increased with respect to full CSIT precoding schemes, which are considered for benchmarking purposes. Different NCRS strategies are analyzed and compared with several partial and full CSIT schemes. The proposed solution not only shows an improvement with respect to partial CSIT benchmarks, but also displays a competitive performance against full CSIT precoders.
%B 36th International Communications Satellite Systems Conference (ICSSC) %C Niagara Falls, Canada %8 10/2018 %G eng %0 Conference Paper %B 15th International Symposium on Wireless Communication Systems (ISWCS) %D 2018 %T Exploratory Analysis of Superposition Coding and Rate Splitting for Multibeam Satellite Systems %A Màrius Caus %A Adriano Pastore %A Mònica Navarro %A Tomás Ramírez %A Carlos Mosquera %A Nele Noels %A Nader Alagha %A Ana I. Perez-Neira %B 15th International Symposium on Wireless Communication Systems (ISWCS) %C Lisbon, Portugal %G eng %0 Conference Paper %B 9th Advanced Satellite Multimedia Systems Conference (ASMS) and 15th Signal Processing for Space Communications Workshop (SPSC) %D 2018 %T Message-Splitting for Interference Cancellation in Multibeam Satellite Systems %A Tomás Ramírez %A Carlos Mosquera %A Màrius Caus %A Adriano Pastore %A Mònica Navarro %A Nele Noels %B 9th Advanced Satellite Multimedia Systems Conference (ASMS) and 15th Signal Processing for Space Communications Workshop (SPSC) %C Berlin, Germany %G eng %0 Conference Paper %B 6th IEEE Global Conference on Signal and Information Processing %D 2018 %T Symbol-Asynchronous Transmission In Multibeam Satellite User Down-Link: Rate Regions For Novel Superposition Coding Schemes %A Nele Noels %A Marc Moeneclaey %A Tomás Ramírez %A Carlos Mosquera %A Màrius Caus %A Adriano Pastore %X

We consider the forward link of a multibeam satellite system with high spectral reuse and the novel low-complexity transmission and detection strategies from ["“Exploratory analysis of superposition coding and rate splitting for multibeam satellite systems", ISWCS 2018]. More specifically, we study the impact of a time offset between the antenna beams that cooperate to simultaneously serve a given user. Assuming Gaussian signaling, we provide closed-form expressions for the achievable rate region. It is demonstrated that, in the absence of timing information at the gateway, this region is not affected by a time offset. Our numerical results further show that, in case timing is known at the gateway, an offset of half a symbol period at both user terminals is optimal in terms of spectral efficiency.

%B 6th IEEE Global Conference on Signal and Information Processing %G eng