Browsing by Author "Caus López, Marius"

Now showing items 1-19 of 19

    • 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 margin adaptive scheduling algorithm for FBMC/OQAM systems 

      Caus López, Marius; Pérez Neira, Ana Isabel; Moretti, Marco; Kliks, Adrian (2014)
      Conference report
      Restricted access - publisher's policy
      This paper addresses the margin adaptive problem for the filter bank multicarrier (FBMC) modulation based on the offset QAM (OQAM), referred to as FBMC/OQAM. The analysis conducted in this paper reveals that due to the ...

    • 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 ...

    • Comparison of linear and widely linear processing in MIMO-FBMC systems 

      Caus López, Marius; Pérez Neira, Ana Isabel (VDE Conference Publications, 2013)
      Conference report
      Restricted access - publisher's policy
      This paper carries out a comparison between two multi-stream techniques aimed for filter bank multicarrier (FBMC) systems based on the offset quadrature amplitude modulation (OQAM). The first option performs linear processing ...

    • D13.2 Techniques and performance analysis on energy- and bandwidth-efficient communications and networking 

      Zalonis, Andreas; Polydoros, Andreas; Rubio López, Javier; Pascual Iserte, Antonio; Gregori, Maria; Payaró, Miquel; Abrignani, Melchiorre D.; Giupponi, Lorenza; Cichon, Krzysztof; Louet, Yves; Nafka, Amor; Caus López, Marius; Pérez Neira, Ana Isabel; Mackowiak, Michal; Beko, Marko; Oliveira, Carla; Correia, Luis M.; Moretti, Marco; Pérez Romero, Jordi; Koutlia, Aikaterini; Agustí Comes, Ramon; Kliks, Adrian; Kryszkiewicz, Pawel; Bogucka, Hanna; Boukhatem, Lila; del Fiorentino, Paolo; Andreotti, Ricardo; Giannetti, Filipo; Lottici, Vincenzo; Van Hecke, Jeroen; Moeneclaey, Marc; Koseoglu, Mehmet; Karasan, Ezhan; Chen, Lin; Bacci, Giacomo; Belmega, Veronica; Debbah, Mérouane; Mertikopoulos, Panayotis; Sanguinetti, Luca; Stupia, Ivan; Vandendorpe, Luc; Bassi, Francesca; Kieffer, Michel (2014-10)
      Research report
      Open Access
      The report presents the status of the research work of the various Joint Research Activities (JRA) in WP1.3 and the results that were developed up to the second year of the project. For each activity there is a description, ...

    • Experimental performance bounds of MIMO-FBMC/OQAM systems 

      Caus López, Marius; Pérez Neira, Ana Isabel (2010)
      Conference report
      Restricted access - publisher's policy
      This paper addresses the application of filter bank multicarrier (FBMC) systems to multiple-input-multiple-output (MIMO) channels. In particular, it is investigated the FBMC modulation based on OQAM, known as FBMC/OQAM. ...

    • FBMC/OQAM MIMO transceiver 

      Caus López, Marius; Mestre, Xavier; Gregoratti, David; Pérez Neira, Ana Isabel; Haardt, Martin; Cheng, Yao; Gomes Baltar, Leonardo (Elsevier, 2017-07-27)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Orthogonal Waveforms and Filter Banks for Future Communication Systems provides an up-to-date account of orthogonal filter bank-based multicarrier (FBMC) systems and their applications in modern and future communications, ...

    • 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 ...

    • Mutual information analysis of frequency packing schemes in multi-beam satellite systemswith phase noise 

      Bas, Joan; Caus López, Marius; Pérez Neira, Ana Isabel; Modenini, Andrea; Ebert, Johannes; García Armada, Ana (Curran, 2017)
      Conference report
      Restricted access - publisher's policy
      This paper analyzes frequency packing schemes applied to multibeam satellite systems. In order to simulate a realistic scenario we have taken into account the presence of co-channel interference and spectrum limitations. ...

    • New satellite random access preamble design based on pruned DFT-spread FBMC 

      Caus López, Marius; Pérez Neira, Ana Isabel; Bas, Joan; Blanco Botana, Luis (2020-07)
      Article
      Open Access
      Next generation satellite payload technology is expected to provide digital processing capabilities. This will pave the way to regard satellites as flying base stations. However, the initial access procedure must be improved. ...

    • 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 ...