TY - JOUR T1 - Space-Time Rate Splitting for the MISO BC with Magnitude CSIT JF - IEEE Transactions on Communications Y1 - 2021 A1 - Carlos Mosquera A1 - Nele Noels A1 - Tomás Ramírez A1 - Màrius Caus A1 - Adriano Pastore ER - TY - CONF T1 - Non-coherent rate-splitting for multibeam satellite forward link: practical coding and decoding algorithms T2 - IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 25-28 May 2020, virtual event. Y1 - 2020 A1 - Nele Noels A1 - Marc Moeneclaey A1 - Tomás Ramírez A1 - Carlos Mosquera A1 - Màrius Caus A1 - Adriano Pastore JF - IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 25-28 May 2020, virtual event. ER - TY - CONF T1 - Adjacent Beams Resource Sharing to Serve Hot Spots : A Rate Splitting Approach T2 - 36th International Communications Satellite Systems Conference (ICSSC) Y1 - 2018 A1 - Tomás Ramírez A1 - Carlos Mosquera A1 - Màrius Caus A1 - Adriano Pastore A1 - Nader Alagha A1 - Nele Noels AB -
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.
JF - 36th International Communications Satellite Systems Conference (ICSSC) CY - Niagara Falls, Canada ER - TY - CONF T1 - Exploratory Analysis of Superposition Coding and Rate Splitting for Multibeam Satellite Systems T2 - 15th International Symposium on Wireless Communication Systems (ISWCS) Y1 - 2018 A1 - Màrius Caus A1 - Adriano Pastore A1 - Mònica Navarro A1 - Tomás Ramírez A1 - Carlos Mosquera A1 - Nele Noels A1 - Nader Alagha A1 - Ana I. Perez-Neira JF - 15th International Symposium on Wireless Communication Systems (ISWCS) CY - Lisbon, Portugal ER - TY - CONF T1 - Message-Splitting for Interference Cancellation in Multibeam Satellite Systems T2 - 9th Advanced Satellite Multimedia Systems Conference (ASMS) and 15th Signal Processing for Space Communications Workshop (SPSC) Y1 - 2018 A1 - Tomás Ramírez A1 - Carlos Mosquera A1 - Màrius Caus A1 - Adriano Pastore A1 - Mònica Navarro A1 - Nele Noels JF - 9th Advanced Satellite Multimedia Systems Conference (ASMS) and 15th Signal Processing for Space Communications Workshop (SPSC) CY - Berlin, Germany ER - TY - CONF T1 - Symbol-Asynchronous Transmission In Multibeam Satellite User Down-Link: Rate Regions For Novel Superposition Coding Schemes T2 - 6th IEEE Global Conference on Signal and Information Processing Y1 - 2018 A1 - Nele Noels A1 - Marc Moeneclaey A1 - Tomás Ramírez A1 - Carlos Mosquera A1 - Màrius Caus A1 - Adriano Pastore AB -

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.

JF - 6th IEEE Global Conference on Signal and Information Processing ER -