Now showing items 1-7 of 7

  • Decentralized shaping for pilot generation and detection in opportunistic communications 

    Borràs Pino, Jordi; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Restricted access - publisher's policy
    The uncoordinated design of pulse shaping filters for opportunistic communications is addressed. We show that under degrees-of-freedom sensing uncertainties the waveform design problem can be cast as a minimum-norm ...
  • Dimension spreading for coherent opportunistic communications 

    Borràs Pino, Jordi; Font Segura, Josep; Riba Sagarra, Jaume; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    The waveform optimization problem for opportunistic communications is addressed, based on sensing the second-order statistics of the existing transmissions. We propose a minimum-norm waveform optimization that exhibits ...
  • Distributed feedback-aided subspace concurrent opportunistic communications 

    Borràs Pino, Jordi; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference lecture
    Restricted access - publisher's policy
    This paper deals with the distributed subspace agreement problem for opportunistic communications in time division duplex (TDD) distributed networks. Since scenario-adapted opportunistic transmission schemes rely on locally ...
  • Low-complexity switching network design for hybrid precoding in mmWave MIMO systems 

    Molina Oliveras, Francesc; Borràs Pino, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Restricted access - publisher's policy
    This paper deals with the design of a hybrid precoder for millimeter-wave MIMO systems. For the sake of concreteness, we consider an analog processing stage composed of a switching network with analog combining. The main ...
  • Noise subspace communication: waveform optimization and interference management 

    Borràs Pino, Jordi (Universitat Politècnica de Catalunya, 2016-07-14)
    Bachelor thesis
    Open Access
    Nowadays, the increasing demand for high data-rate services increases the interest of spectral efficiency. As it is well-known, the spectrum is a limited resource. Thus, those newest techniques should exploit it efficiently. ...
  • Pilot contamination in context-aware pilot-based opportunistic communications 

    Borràs Pino, Jordi (Universitat Politècnica de Catalunya, 2018-07)
    Master thesis
    Restricted access - author's decision
    The increasing demand of high data-rate services and the unstoppable growth of communicating interfaces are two important features of next-era wireless communications. Albeit some strategies have recently arisen to deal ...
  • Uncoordinated space-frequency pilot design for multi-antenna wideband opportunistic communications 

    Borràs Pino, Jordi; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    The statistical side information of interference channels is exploited in this paper to derive a novel uncoordinated on-line pilot design strategy for opportunistic communications. Assuming a time division duplex (TDD), ...