%0 Journal Article
%J IEEE Transactions on Broadcasting
%D 2022
%T Flexible User Mapping for Radio Resource Assignment in Advanced Satellite Payloads
%A Tomás Ramírez
%A Carlos Mosquera
%A Nader Alagha
%B IEEE Transactions on Broadcasting
%G eng
%0 Conference Paper
%B 9th European Signal Processing Conference, EUSIPCO 2021
%D 2021
%T Flexible Beam-User Mapping for Multibeam Satellites
%A Tomás Ramírez
%A Carlos Mosquera
%A Nader Alagha
%B 9th European Signal Processing Conference, EUSIPCO 2021
%C Dublin, Irlanda
%G eng
%0 Conference Paper
%B 38th International Communications Satellite Systems Conference (ICSSC),
%D 2021
%T Non-Orthogonal Transmission Under Flexible Illumination Patterns For Advanced Satellite Payloads
%A Tomás Ramírez
%A Carlos Mosquera
%A Nader Alagha
%B 38th International Communications Satellite Systems Conference (ICSSC),
%C Washington DC, USA
%G eng
%0 Conference Paper
%B 10th Advanced Satellite Multimedia Systems Conference (ASMS) and 16th Signal Processing for Space Communications Workshop (SPSC)
%D 2020
%T Study on the Application of NOMA Techniques for Heterogeneous Satellite Terminals
%A Tomás Ramírez
%A Carlos Mosquera
%A Nele Noels
%A Màrius Caus
%A Joan Bas
%A Luis Blanco
%A Nader Alagha
%B 10th Advanced Satellite Multimedia Systems Conference (ASMS) and 16th Signal Processing for Space Communications Workshop (SPSC)
%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 Twelfth International Symposium on Wireless Communication Systems (ISWCS)
%D 2015
%T Pushing for higher rates and efficiency in Satcom: the different perspectives within SatNExIV
%A Miguel Ángel Vázquez
%A Ana Pérez Neira
%A Carlos Mosquera
%A Bhavani Shankar
%A Pol Henarejos
%A Athanasios Panagopoulos
%A Giovanni Giambene
%A Vasilios Siris
%A George Polyzos
%A Nader Alagha
%K satcom
%B Twelfth International Symposium on Wireless Communication Systems (ISWCS)
%C Brussels
%G eng