SPCOM - Grup de Recerca de 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

  • Energy efficient transmit-receive spatial modulation for uplink-downlink large-scale MIMO systems 

    Raafat Hosny Mohamed Fahm, Ahmed; Yüzgeçcioglu, Merve; Zahid Aslam, Mohammed; Agustín de Dios, Adrián; Vidal Manzano, José; Jorswieck, Eduard Axel; Corre, Yoann (2018)
    Conference report
    Restricted access - publisher's policy
    Energy efficient spatial modulation-aided uplink and downlink designs for future millimeterwave (mmWave) large-scale multiple-input multiple-output (MIMO) systems are considered. Two novel uplink transceivers are proposed ...

  • Wideband receive spatial modulation with time domain pre-equalizer for large MIMO systems 

    Raafat Hosny Mohamed Fahm, Ahmed; Agustín de Dios, Adrián; Vidal Manzano, José (2018)
    Conference report
    Open Access
    Receive spatial modulation (RSM) schemes are promising for massive multiple-input-multiple-output (MIMO) systems at millimeter wave (mmWave) bands because they require reduced complexity and low consumption hardware at the ...

  • Channel-aware energy allocation for throughput maximization in massive low-rate multiple access 

    Molina Oliveras, Francesc; Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Restricted access - publisher's policy
    A multiple access (MA) optimization technique for massive low-rate direct-sequence spread spectrum communications is analyzed in this work. A dense network of users transmitting at the same rate to a common central node ...

  • Decentralized random energy allocation for massive non-orthogonal code-division multiple access 

    Molina Oliveras, Francesc; Villares Piera, Nemesio Javier; Rey Micolau, Francesc; Sala Álvarez, José (2019-10-07)
    Article
    Open Access
    This work studies the spectral efficiency achievable when a very large number of terminals are connected simultaneously to a central node (uplink) through independent and identically-distributed flat-fading channels. ...

  • Average PER performance metrics of iterative successive interference cancellation 

    Molina Oliveras, Francesc; Sala Álvarez, José (2019-09-16)
    Article
    Open Access
    The average packet error rate (PER) and user-PER profiles of iterative successive interference cancellation (I-SIC) are analyzed for a proof-of-concept scenario where asymptotically many code-division-multiple-access users ...

  • A proof of de Bruijn identity based on generalized Price’s theorem 

    Riba Sagarra, Jaume; Cabrera Estanyol, Ferran de (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference lecture
    Restricted access - publisher's policy
    This paper shows that de Bruijn identity, which relates entropy with Fisher information, can be obtained as a particular case of an immediate generalization of Price’s theorem, which is a tool used in the analysis of ...

  • Multi-satellite cycle-slip detection and exclusion using the noise subspace of residual dynamics 

    Riba Sagarra, Jaume; Cabrera Estanyol, Ferran de; Juan Zornoza, José Miguel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Restricted access - publisher's policy
    Real-time detection of cycle-slips on undifferenced carrier-phase measurements is an important task to properly exclude wrong phase trackers from precise positioning algorithms. The detection is especially challenging in ...

  • On the coordination of base stations in ultra dense cellular networks 

    Aravanis, Alexios; Muñoz Medina, Olga; Pascual Iserte, Antonio; di Renzo, Marco (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Ultra dense networks (UDNs) allow for efficient spatial reuse of the spectrum, giving rise to substantial capacity and power gains. However, recent findings have demonstrated that the reduction of inter-site distances after ...

  • One-shot capacity bounds on the simultaneous transmission of classical and quantum information 

    Salek Shishavan, Farzin; Anshu, Anurag; Hsieh, Min-Hsiu; Jain, Rahul; Rodríguez Fonollosa, Javier (2019-10-07)
    Article
    Open Access
    We study the communication capabilities of a quan- tum channel under the most general channel model known as the one-shot model. Unlike classical channels that can only be used to transmit classical information (bits), a ...

  • Polar coding for common message only wiretap broadcast channel 

    Olmo Alòs, Jaume del; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference lecture
    Restricted access - publisher's policy
    A polar coding scheme is proposed for the Wiretap Broadcast Channel with two legitimate receivers and one eavesdropper. We consider a model in which the transmitter wishes to send a private and a confidential message that ...

  • Publicness, privacy and confidentiality in the single-serving quantum broadcast channel 

    Salek Shishavan, Farzin; Hsieh, Min-Hsiu; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference lecture
    Restricted access - publisher's policy
    The 2-receiver broadcast channel with primary and third-party receivers is studied. The messages are classified into public, private and confidential. The messages in the public class are messages intended for both receivers. ...

  • Soft clustering using real-world data for the identification of multimorbidity patterns in an elderly population: Cross-sectional study in a Mediterranean population 

    Violán Fors, Concepción; Foguet Boreu, Quintí; Fernández Bertolín, Sergio; Guisado Clavero, Marina; Cabrera-Bean, Margarita; Formiga, Francesc; Valderas, José Maria; Roso Llorach, Albert (2019-08-01)
    Article
    Open Access
    The aim of this study was to identify, with soft clustering methods, multimorbidity patterns in the electronic health records of a population =65 years, and to analyse such patterns in accordance with the different prevalence ...

View more