Now showing items 1-12 of 12

  • A discrete bit loading algorithm for FBMC/OQAM 

    Caus López, Marius; Pérez Neira, Ana Isabel; García Armada, Ana (2012-06)
    Article
    Restricted access - publisher's policy
    In this letter the discrete rate maximization problem is investigated for FBMC/OQAM. The analysis reveals that if there is crosstalk certain bit allocations violate the power constraints. Aiming at ensuring the feasibility ...
  • A suboptimal power allocation algorithm for FBMC/OQAM 

    Caus López, Marius; Pérez Neira, Ana Isabel (2012)
    Conference lecture
    Restricted access - publisher's policy
    This paper tackles the sum-rate maximization in FBMC systems. It is well-known that multipath fading destroys the orthogonality of the subcarriers, which brings a non-convex problem that can be interpreted as the ...
  • Interference mitigation techniques for asynchronous multiple access communications in SIMO FBMC systems 

    Caus López, Marius; Pérez Neira, Ana Isabel (2011)
    Conference report
    Restricted access - publisher's policy
    Multicell processing has been recognized as a solution to improve spectral efficiency in future wireless networks. However, the sharing of channel information and data among base stations (BSs) requires an higher backhaul ...
  • Low-complexity interference variance estimation methods for coded multicarrier systems: application to SFN 

    Caus López, Marius; Pérez Neira, Ana Isabel; Renfors, Markku (2013-10-27)
    Article
    Open Access
    For single-frequency network (SFN) transmission, the echoes coming from different transmitters are superimposed at the reception, giving rise to a frequency selective channel. Although multicarrier modulations lower the ...
  • MIMO channel modeling and transmission techniques for multi-satellite and hybrid satellite-terrestrial mobile networks 

    Pérez Neira, Ana Isabel; Ibars, C.; Serra, J; Del Coso, Aitor; Gómez Vilardebó, Jesús; Caus López, Marius; Liolis, K.P. (2011-06)
    Article
    Restricted access - publisher's policy
    The Quality of Service (QoS) in land mobile satellite (LMS) communications drops drastically in the presence of shadowing and multipath fading. This paper studies two promising multiple-input multiple-output (MIMO) schemes, ...
  • Multi-stream transmission for highly frequency selective channels in MIMO-FBMC/OQAM systems 

    Caus López, Marius; Pérez Neira, Ana Isabel (2013-12-03)
    Article
    Restricted access - publisher's policy
    This paper addresses the joint design of MIMO precoding and decoding matrices for filter bank multicarrier (FBMC) systems based on OQAM, known as FBMC/OQAM. Existing solutions that support multi-stream transmission only ...
  • Multi-stream transmission in MIMO-FBMC systems 

    Caus López, Marius; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
    Conference report
    Restricted access - publisher's policy
    This paper addresses the design of MIMO precoding and decoding techniques for the filter bank multicarrier (FBMC) modulation. Existing solutions give satisfactory performance in scenarios with high coherence bandwidth ...
  • Optimal MISO pre-equalization for filter bank multicarrier systems 

    Caus López, Marius; Pérez Neira, Ana Isabel (2009)
    Conference report
    Restricted access - publisher's policy
    One of the phenomena that degrades the performance of multicarrier modulation (MCM) systems is the spectral nulls that multipath channel may have. As a result, the affected subcarrier signals may be severely degraded ...
  • SDMA for filterbank with Tomlinson Harashima precoding 

    Caus López, Marius; Pérez Neira, Ana Isabel (2013)
    Conference report
    Restricted access - publisher's policy
    Several studies have revealed that OFDM is outperformed in several areas by the filter bank based multicarrier (FBMC) modulation thanks to pulse shaping techniques. Nevertheless, the combination of FBMC with multi-antenna ...
  • Space-Time Receiver for Filterbank Based Multicarrier Systems 

    Caus López, Marius; Pérez Neira, Ana Isabel (2011)
    Conference report
    Restricted access - publisher's policy
    By including a cyclic prefix (CP), systems based on orthogonal frequency division multiplexing (OFDM) are capable of mitigating multipath with a single tap equalizer. Aiming at increasing the spectral efficiency, filter ...
  • Subcarrier allocation and power loading strategies for multi-user broadcast FBMC/OQAM systems 

    Caus López, Marius; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2012)
    Conference lecture
    Restricted access - publisher's policy
    With the objective of maximizing the sum-rate this paper tackles the subcarrier and the power allocation problems in the context of multi-user FBMC. Under highly frequency selective channels the demodulated data is ...
  • Transmit and receive filters for MISO FBMC systems subjected to power constraints 

    Caus López, Marius; Pérez Neira, Ana Isabel (2011)
    Conference report
    Restricted access - publisher's policy
    Build upon the OFDM/OQAM scheme this paper addresses the design of linear transmit and receive filters. Aiming at enhancing the robustness against multipath fading, two novel techniques are proposed. The first one jointly ...