@article {1027, title = {Flexible User Mapping for Radio Resource Assignment in Advanced Satellite Payloads}, journal = {IEEE Transactions on Broadcasting}, year = {2022}, author = {Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and Nader Alagha} } @conference {1004, title = {Flexible Beam-User Mapping for Multibeam Satellites}, booktitle = {9th European Signal Processing Conference, EUSIPCO 2021}, year = {2021}, address = {Dublin, Irlanda}, author = {Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and Nader Alagha} } @conference {1005, title = {Non-Orthogonal Transmission Under Flexible Illumination Patterns For Advanced Satellite Payloads}, booktitle = {38th International Communications Satellite Systems Conference (ICSSC),}, year = {2021}, address = {Washington DC, USA}, author = {Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and Nader Alagha} } @conference {994, title = {Study on the Application of NOMA Techniques for Heterogeneous Satellite Terminals}, booktitle = {10th Advanced Satellite Multimedia Systems Conference (ASMS) and 16th Signal Processing for Space Communications Workshop (SPSC)}, year = {2020}, author = {Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and Nele Noels and M{\`a}rius Caus and Joan Bas and Luis Blanco and Nader Alagha} } @conference {942, title = {Adjacent Beams Resource Sharing to Serve Hot Spots : A Rate Splitting Approach}, booktitle = {36th International Communications Satellite Systems Conference (ICSSC)}, year = {2018}, month = {10/2018}, address = {Niagara Falls, Canada}, abstract = {
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.
}, author = {Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and M{\`a}rius Caus and Adriano Pastore and Nader Alagha and Nele Noels} } @conference {936, title = {Exploratory Analysis of Superposition Coding and Rate Splitting for Multibeam Satellite Systems}, booktitle = {15th International Symposium on Wireless Communication Systems (ISWCS)}, year = {2018}, address = { Lisbon, Portugal}, author = {M{\`a}rius Caus and Adriano Pastore and M{\`o}nica Navarro and Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and Nele Noels and Nader Alagha and Ana I. Perez-Neira} } @conference {822, title = {Pushing for higher rates and efficiency in Satcom: the different perspectives within SatNExIV}, booktitle = {Twelfth International Symposium on Wireless Communication Systems (ISWCS)}, year = {2015}, address = {Brussels}, keywords = {satcom}, author = {Miguel {\'A}ngel V{\'a}zquez and Ana P{\'e}rez Neira and Carlos Mosquera and Bhavani Shankar and Pol Henarejos and Athanasios Panagopoulos and Giovanni Giambene and Vasilios Siris and George Polyzos and Nader Alagha} }