SPCOM - Processament del Senyal i Comunicacions

 

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

  • Prediction models using artificial intelligence and longitudinal data from electronic health records: a systematic methodological review 

    Carrasco Ribelles, Lucía Amalia; Llanes Jurado, José; Gallego Moll, Carlos; Cabrera-Bean, Margarita; Monteagudo Zaragoza, Mònica; Violán Fors, Concepción; Zabaleta del Olmo, Edurne (2023-09-02)
    Article
    Open Access
    Objective: To describe and appraise the use of artificial intelligence (AI) techniques that can cope with longitudinal data from electronic health records (EHRs) to predict health-related outcomes. Methods: This ...

  • Optimizing access demand for mMTC traffic using neural networks 

    Llobet Turró, Martí; Cabrera-Bean, Margarita; Vidal Manzano, José; Agustin de Dios, Adrian (Institute of Electrical and Electronics Engineers (IEEE), 2023-07-12)
    Article
    Open Access
    Machine-type communications show unique spatial and temporal correlation properties that often lead to bursty access demand profiles. With the expected large-scale deployment of the Internet of Things (IoT), next-generation ...

  • Multiqubit time-varying quantum channels for NISQ-era superconducting quantum processors 

    Etxezarreta Martínez, Josu; Fuentes Ugartemendia, Patricio; Martí i Oliu, Antonio de; García Frias, Javier; Rodríguez Fonollosa, Javier; Crespo Bofill, Pedro M. (American Physical Society, 2023-07)
    Article
    Open Access
    Time-varying quantum channels (TVQCs) have been proposed as a model to include fluctuations of the relaxation (T1) and dephasing times (T2). In previous works, realizations of multiqubit TVQCs have been assumed to be equal ...

  • Contribution of frailty to multimorbidity patterns and trajectories: Longitudinal dynamic cohort study of aging people 

    Carrasco Ribelles, Lucía Amalia; Cabrera-Bean, Margarita; Danés Castells, Marc; Zabaleta del Olmo, Edurne; Roso Llorach, Albert; Violán Fors, Concepción (2023-06-27)
    Article
    Open Access
    Background: Multimorbidity and frailty are characteristics of aging that need individualized evaluation, and there is a 2-way causal relationship between them. Thus, considering frailty in analyses of multimorbidity is ...

  • Data driven joint sensor fusion and regression based on geometric mean squared error 

    López Molina, Carlos Alejandro; Riba Sagarra, Jaume (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Conference lecture
    Open Access
    This paper explores the problem of estimating a temporal series measured from multiple independent sensors with unequal and stationary measurement errors with unknown variances. By formulating the data fusion problem as a ...

  • IST-033914-WINSOC: D4.4 System level network performance evaluation 

    de Marinis, Enrico; Pagès Zamora, Alba Maria; Silva Pereira, Silvana; Yovanof, Gregory S.; Pediaditaki, Dimosthenis; Hasler, Martin; Alireza, Khadivi; Leonidas, Georgopoulos (2009-04-17)
    Research report
    Restricted access - confidentiality agreement
    This document constitutes the final outcome of the activities carried out in the WINSOC WP4, along with the interactions of this WP with WP3 and WP2. Although one objective of WP4 is to provide indications to the project ...

  • IST-2000-30148 I-METRA: D3.2 Implementation of relevant algorithms 

    Rodríguez Fonollosa, Javier; Gaspa Maynou, Roger; Heikkilä, Markku J.; Kermoal, Jean Philippe; Majonen, Kari; Mestre Pons, Francesc Xavier; Pagès Zamora, Alba Maria; Pollard, Adam; Schumacher, Laurent; Wiesel, Ami; Ylitalo, Juha (2002-07-03)
    Research report
    Open Access
    This deliverable provides a high level description of the software developed within the I-METRA project following the selection reported in D3.1 "Design, Analysis and Selection of Suitable Algorithms".

  • IST-2000-30148 I-METRA: D3.1 Design, analysis and selection of suitable algorithms 

    Rodríguez Fonollosa, Javier; Gaspa Maynou, Roger; Heikkilä, Markku J.; Kermoal, Jean Philippe; Majonen, Kari; Mestre Pons, Francesc Xavier; Pagès Zamora, Alba Maria; Pollard, Adam; Schumacher, Laurent; Wiesel, Ami; Ylitalo, Juha (2002-07-03)
    Research report
    Open Access
    This deliverable contains a description of the space-time coding algorithms to be simulated within the I-METRA project. Different families of algorithms have been selected and described in this document with the objective ...

  • IST-2000-30148 I-METRA: D4 Performance evaluation 

    Heikkilä, Markku J.; Majonen, Kari; Rodríguez Fonollosa, Javier; Pagès Zamora, Alba Maria; Ylitalo, Juha; Tiirola, Esa; Pollard, Adam (2003-09-30)
    Research report
    Open Access
    This document considers the performance of multiantenna transmit/receive techniques in high-speed downlink and uplink packet access. The evaluation is done using both link and system level simulations by taking into account ...

  • IST-2000-30148 I-METRA: D6.1 Implications in re-configurable systems beyond 3G (Part 1) 

    Berger, Lars T.; Rodríguez Fonollosa, Javier; García Ordóñez, Luís; Pagès Zamora, Alba Maria; Ramiro Moreno, Juan (2003-08-31)
    Research report
    Open Access
    In this activity MIMO HSDPA is evaluated as the UMTS evolution that could allow a combination of high bit rate services, coverage and mobility with a good trade-off between cost and performance. This evaluation requires ...

  • IST-2000-30148 I-METRA: D6.2 Implications in re-configurable systems beyond 3G (Part 2) 

    Rodríguez Fonollosa, Javier; Pagès Zamora, Alba Maria; Teyeb, Oumer (2003-08-31)
    Research report
    Open Access
    This activity evaluates the extension of the bandwidth of the UTRA MIMO HSDPA concept to 20 MHz, which is precisely the bandwidth of HIPERLAN/2. This would allow a fair comparison between the performance of UTRA MIMO HSDPA ...

  • On the estimation of Tsallis entropy and a novel information measure based on its properties 

    Martí Espelt, Aniol; Cabrera Estanyol, Ferran de; Riba Sagarra, Jaume (2023-06-30)
    Article
    Open Access
    This letter explores a plug-in estimator of second-order Tsallis entropy based on Kernel Density Estimation (KDE) and its implicit regularization process. First, it is shown that the expected value of the estimator corresponds ...

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