Desenvolupament i anàlisi de tècniques avançades de processament digital del senyal amb èmfasi en la seva aplicació a sistemes de comunicacions i/o localització. Àrees d'interès especial són les comunicacions sense fils en tots els seus àmbits, des del personal, local i cel·lular i ampliant el seu abast fins a les comunicacions per satèl·lit i d'espai profund, així com els sistemes de localització adequats a tots aquests entorns. Les tècniques en les quals el grup acumula una experiència considerable i en què és previsible una participació més significativa en el futur són les següents: disseny de sistemes de comunicacions per satèl·lit avançats, desenvolupament de sistemes de comunicacions sense fils amb múltiples antenes en transmissió i/o recepció, desenvolupament de sistemes avançats de localització i navegació i optimització d'esquemes d’assignació de recursos per a sistemes i xarxes de comunicacions sense fils no centralitzades.

Development and analysis of advanced signal processing techniques with emphasis on their application to communication and location systems. Wireless communication networks at the personal, local and cellular levels up to satellite and deep space communications constitute areas of special interest, as well as location and navigation systems adequate to these environments. The fields in which our research group enjoys considerably experience and in which we will foreseeably be engaged in the future are the following: design of advanced satellite communication systems, development of wireless communication systems with multiple transmitting/receiving antennas, development of advanced location and navigation systems and optimization of resource allocation schemes for decentralized wireless communication systems and networks.

Recent Submissions

  • Array geometry-invariant space-time opportunistic null-space communications 

    Borràs Pino, Jordi; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 2024)
    Article
    Open Access
    This work studies the impact of the array geometry on a space-time extension of a generalized class of null-space precoding format denoted as p -waveforms (Projection-Invariant waveforms), which exhibit subspace invariance ...
  • Asymptotic analysis of near-field coupling in massive MISO and massive SIMO systems 

    Martí Espelt, Aniol; Riba Sagarra, Jaume; Lamarca Orozco, M. Meritxell; Gràcia Sabaté, Francesc Xavier (2024-06-17)
    Article
    Open Access
    This paper studies the receiver to transmitter antenna coupling in near-field communications with massive arrays. Although most works in the literature consider that it is negligible and approximate it by zero, there is ...
  • Quadratic detection in noncoherent massive SIMO systems over correlated channels 

    Vila Insa, Marc; Martí Espelt, Aniol; Riba Sagarra, Jaume; Lamarca Orozco, M. Meritxell (Institute of Electrical and Electronics Engineers (IEEE), 2024-06-14)
    Article
    Open Access
    With the goal of enabling ultrareliable and low-latency wireless communications for industrial internet of things (IIoT), this paper studies the use of energy-based modulations in noncoherent massive single-input multiple-output ...
  • A refinement of expurgation 

    Cocco, Giuseppe; Font Segura, Josep; Guillén i Fàbregas, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2024-04-17)
    Article
    Open Access
    We show that for a wide range of channels and code ensembles with pairwise-independent codewords, with probability tending to 1 with the code length, expurgating an arbitrarily small fraction of codewords from a randomly ...
  • Remote monitoring of Markov sources over random access channels: false alarm and detection probability 

    Munari, Andrea; Cocco, Giuseppe; Liva, Gianluigi (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Open Access
    We study the problem of remote source monitoring in an Internet of Things (IoT) system where a set of devices share a wireless channel to a common receiver. Each device observes an independent two-state Markov chain, with ...
  • State estimation entropy for two-state markov sources in slotted ALOHA random access channels 

    Cocco, Giuseppe; Munari, Andrea; Liva, Gianluigi (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Restricted access - confidentiality agreement
    We study a system in which terminals monitoring two-state Markov sources communicate towards a common receiver over a slotted ALOHA random access channel. We analyze the system performance in terms of state estimation ...
  • Remote monitoring of two-state markov sources via random access channels: an information freshness vs. state estimation entropy perspective 

    Cocco, Giuseppe; Munari, Andrea; Liva, Gianluigi (Institute of Electrical and Electronics Engineers (IEEE), 2023-11-09)
    Article
    Open Access
    We study a system in which two-state Markov sources send status updates to a common receiver over a slotted ALOHA random access channel. We characterize the performance of the system in terms of state estimation entropy ...
  • Reconfigurable intelligent surfaces for receive spatial modulation in rank-deficient channels 

    Moreno Locubiche, Ainna Yue; Vidal Manzano, José; Pascual Iserte, Antonio; Muñoz Medina, Olga (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Open Access
    Receive spatial modulation (RSM) has been proposed as an effective transmission technology for next-generation wireless communications systems because of its reduced complexity and low energy consumption at the receiver ...
  • Contextual multi-armed bandits for non-stationary wireless network selection 

    Martínez Casanovas, Lluís; Vidal Manzano, José; Cabrera-Bean, Margarita (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference report
    Open Access
    As the number of wireless technologies (4G, 5G, 802.11ax and other) have been rapidly increasing, so have the number of wireless networks concurrently deployed on a given coverage area. As a result, the judicious selection ...
  • Relation between quantum advantage in supervised learning and quantum computational advantage 

    Pérez Guijarro, Jordi; Pagès Zamora, Alba Maria; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2023-12-26)
    Article
    Open Access
    The widespread use of machine learning has raised the question of quantum supremacy for supervised learning as compared to quantum computational advantage. In fact, a recent work shows that computational and learning ...
  • Concentration properties of random codes 

    Truong, Lan V.; Cocco, Giuseppe; Font Segura, Josep; Guillén i Fàbregas, Albert (2023-09-05)
    Article
    Open Access
    This paper shows that, for discrete memoryless channels, the error exponent of a randomly generated code with independent codewords converges in probability to its expectation—the typical error exponent. For high rates, ...
  • Sidelobe suppression for multicarrier signals via structured spectral precoding 

    Hussain, Khawar; López Valcarce, Roberto; Rey Micolau, Francesc; Sala Álvarez, José; Villares Piera, Nemesio Javier (Institute of Electrical and Electronics Engineers (IEEE), 2024-01-22)
    Article
    Open Access
    Reducing the large sidelobes of multicarrier signals is crucial to prevent adjacent channel interference. Spectral precoding is an effective approach toward this goal, at the expense of throughput loss due to precoder ...

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