Exploració per autor "Ottersten, Bjorn"

Ara es mostren els items 1-8 de 8

    • A design strategy for phase synchronization in precoding-enabled DVB-S2X user terminals 

      Martínez Marrero, Liz; Merlano-Duncan, Juan Carlos; Querol Borràs, Jorge; Chatzinotas, Simeon; Camps Carmona, Adriano José; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2021)
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      Accés obert
      This paper address the design of a phase tracking block for the DVB-S2X user terminals in a satellite precoding system. The spectral characteristics of the phase noise introduced by the oscillator, the channel, and the ...

    • A remote carrier synchronization technique for coherent distributed remote sensing systems 

      Merlano-Duncan, Juan Carlos; Martínez Marrero, Liz; Querol Borràs, Jorge; Kumar, Sumit; Camps Carmona, Adriano José; Chatzinotas, Symeon; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Article
      Accés obert
      Phase, frequency, and time synchronization are crucial requirements for many applications, such as multistatic remote sensing and communication systems. Moreover, the synchronization solution becomes even more challenging ...

    • Accurate phase synchronization for precoding-enabled GEO multibeam satellite systems 

      Martínez Marrero, Liz; Merlano Duncan, Juan Carlos; González Rios, Jorge Luis; Krivochiza, Jevgenij; Chatzinotas, Symeon; Ottersten, Bjorn; Camps Carmona, Adriano José (Institute of Electrical and Electronics Engineers (IEEE), 2024)
      Article
      Accés obert
      Synchronizing the local oscillators in multibeam satellites with the objective of coherent communications is still an open challenge. It has to be addressed to implement full-frequency reuse approaches, such as precoding ...

    • Architectures and synchronization techniques for coherent distributed remote sensing systems 

      Merlano-Duncan, Juan Carlos; Querol, Jorge; Camps Carmona, Adriano José; Chatzinotas, Simeon; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2019)
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      Phase, frequency and time synchronization is a crucial requirement for many applications as such as multi-static remote sensing and distributed beamforming for communications. The literature on the field is very wide, and ...

    • Joint beam-hopping scheduling and power allocation in NOMA-assisted satellite systems 

      Wang, Anyue; Lei, Lei; Lagunas Targarona, Eva; Chatzinotas, Simeon; Pérez Neira, Ana Isabel; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Text en actes de congrés
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      In this paper, we investigate potential synergies of non-orthogonal multiple access (NOMA) and beam hopping (BH) for multi-beam satellite systems. The coexistence of BH and NOMA provides time-power-domain flexibilities in ...

    • On fairness optimization for NOMA-enabled multi-beam satellite systems 

      Wang, Anyue; Lei, Lei; Lagunas Targarona, Eva; Pérez Neira, Ana Isabel; Chatzinotas, Simeon; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2019)
      Text en actes de congrés
      Accés obert
      In a multi-beam satellite communication system, traffic requests are typically asymmetric across beams and highly heterogeneous among terminals. In practical operations, it is important to achieve a good match between the ...

    • Precoding in multibeam satellite communications: present and future challenges 

      Vázquez, Miguel Ángel; Pérez Neira, Ana Isabel; Christopoulos, Dimitrios; Chatzinotas, Symeon; Ottersten, Bjorn; Arapoglou, Pantelis-Daniel; Ginesi, Alberto; Tarocco, Giorgio (2016-12-01)
      Article
      Accés obert
      Whenever multibeam satellite systems target very aggressive frequency reuse in their coverage area, inter-beam interference becomes the major obstacle for increasing the overall system throughput. As a matter of fact, users ...

    • SDR implementation of a testbed for synchronization of coherent distributed remote sensing systems 

      Merlano-Duncan, Juan Carlos; Querol Borràs, Jorge; Martínez Marrero, Liz; Krivochiza, Jevgenij; Camps Carmona, Adriano José; Chatzinotas, Simeon; Ottersten, Bjorn (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
      Accés obert
      Remote Sensing from distributed platforms has become attractive for the community in the last years. Phase, frequency, and time synchronization are a crucial requirement for many such applications as multi-static remote ...