Now showing items 1-10 of 10

  • A novel approach to MISO interference networks under maximum receive-power regulation 

    Pérez Neira, Ana Isabel; Vázquez Oliver, Miguel Ángel; Lagunas Hernandez, Miguel A. (WSEAS Press, 2018-07-01)
    Article
    Open Access
    An aggressive frequency reuse is expected within the next years in order to increase the spectral ef¿ciency. Multiuser interference by all in-band transmitters can create a communication bottleneck and, therefore, it is ...
  • Beamforming design and power control for spectrum sharing systems 

    Vázquez Oliver, Miguel Ángel (Universitat Politècnica de Catalunya, 2014-01-24)
    Doctoral thesis
    Open Access
    In order to provide wireless services for the current demand of high data rate mobile applications, more spectrally efficient systems are needed. As a matter of fact, the current wireless systems are limited by a frequency ...
  • Hybrid analog-digital transmit beamforming for spectrum sharing backhaul networks 

    Vázquez Oliver, Miguel Ángel; Blanco Botana, Luis; Pérez Neira, Ana Isabel (2018-02-14)
    Article
    Open Access
    This paper deals with the problem of analog-digital transmit beamforming under spectrum sharing constraints for backhaul systems. In contrast to fully digital designs, where the spatial processing is done at baseband unit ...
  • Multicarrier-signal design with low peaks and low out-of-band power 

    Vázquez Oliver, Miguel Ángel (Universitat Politècnica de Catalunya, 2009-09-16)
    Master thesis (pre-Bologna period)
    Open Access
    The high peak-to-average power ratio (PAPR) and the high out-of-band power (OBP) are two major drawbacks of multicarrier communication systems. Many PAPR reduction and OBP supression techniques have been proposed in the ...
  • Precoding, scheduling and link adaptation in mobile interactive multibeam satellite systems 

    Vázquez Oliver, Miguel Ángel; Bhavani Shankar, M. R.; Kourogiorgas, Charilaos; Arapoglou, Pantelis-Daniel; Icolari, Vicenzo; Chatzinotas, Symeon; Panagopoulos, Athanasios D.; Pérez Neira, Ana Isabel (2018-05-03)
    Article
    Open Access
    This paper deals with the problem of precoding, scheduling and link adaptation in next generation mobile interactive multibeam satellite systems. In contrast to the fixed satellite services, when the user terminals move ...
  • Rate splitting for MIMO multibeam satellite systems 

    Vázquez Oliver, Miguel Ángel; Caus, Marius; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    This paper deals with the problem of precoding in multibeam satellite system with rate splitting (RS). In contrast to the single-stream (SS) case where a unique private frame is transmitted towards each beam, in RS we ...
  • Sparse beamforming for mmWave spectrum sharing systems 

    Vázquez Oliver, Miguel Ángel; Blanco, Luis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference lecture
    Restricted access - publisher's policy
    This paper deals with the problem of sparse beamforming for interference mitigation in milimiter wave (mm Wave) frequency bands. Multiantenna solutions in mmWave are generally implemented with phase shifters which are known ...
  • Spectral clustering for beam-free satellite communications 

    Vázquez Oliver, Miguel Ángel; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    This paper introduces the notion of beam-free satellite systems and it investigates different scheduling algorithms for this architecture. Attending to the current satellite gateway cloudification, this paper assumes that ...
  • Spectrum sharing backhaul satellite-terrestrial systems via analog beamforming 

    Vázquez Oliver, Miguel Ángel; Blanco Botana, Luis; Pérez Neira, Ana Isabel (2018-05-01)
    Article
    Open Access
    Current satellite and terrestrial backhaul systems are deployed in disjoint frequency bands. This fact precludes an efficient use of the spectrum and limits the evolution of wireless backhauling networks. In this paper, ...
  • Transmit beamforming for open spectrum systems 

    Vázquez Oliver, Miguel Ángel (Universitat Politècnica de Catalunya, 2012-07-17)
    Master thesis
    Open Access
    [ANGLÈS] This thesis deals with the problem of finding optimal precoding techniques that, considering multiple antennas at the transmitter side, will be able to increase the data rate of future interference networks. First, ...