Now showing items 1-20 of 85

    • 3G access network dimensioning in isolated rural areas based on femtocells 

      Olmo Alòs, Jaume del; Pascual Iserte, Antonio; Vidal Manzano, José; Muñoz Medina, Olga; Agustín de Dios, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Conference report
      Restricted access - publisher's policy
      Based on the definition of the access network architecture and the forecast of voice and data traffic evolution, this paper derives engineering rules for radio network dimensioning of 3G femtocell-based access networks in ...
    • A maximum approach for robust MIMO design: combining OSTBC and beamforming with minimum transmission power requirements 

      Pascual Iserte, Antonio; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (2004)
      Conference report
      Open Access
      In this paper we address the problem of the design of a transmitter in a Multi-Input-Multi-Output (MIMO) space diversity system. We consider a design which is robust to errors in the channel estimate available at the ...
    • A real-time FPGA-based implementation of a high-performance MIMO-OFDM mobile WiMAX transmitter 

      Font Bach, Oriol; Bartzoudis, Nikolaos; Pascual Iserte, Antonio; López Bueno, David (2011)
      Conference report
      Open Access
      The Multiple Input Multiple Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) is considered a key technology in modern wireless-access communication systems. The IEEE 802.16e standard, also denoted as ...
    • A real-time FPGA-based implementation of a high-performance MIMO-OFDM transceiver featuring a closed-loop communication scheme 

      Font Bach, Oriol; Bartzoudis, Nikolaos; Pascual Iserte, Antonio; López Bueno, David (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Conference report
      Restricted access - publisher's policy
      In this paper we present the FPGA implementation of a multi-antenna Orthogonal Frequency-Division Multiplexing (OFDM) transmitter and receiver featuring a closed-loop (CL) communication scheme. The PHY-layer development ...
    • A real-time FPGA-based mobile WiMAX transceiver supporting multi-antenna configurations 

      Bartzoudis, Nikolaos; Font Bach, Oriol; Pascual Iserte, Antonio; López Bueno, David (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy
      This paper presents the design, implementation and experimental validation of a real-time FPGA-based mobile WiMAX baseband transceiver. Three different antenna configuration schemes were implemented and tested, namely ...
    • A real-time MIMO-OFDM mobile WiMAX receiver: architecture, design and FPGA implementation 

      Font Bach, Oriol; Bartzoudis, Nikolaos; Pascual Iserte, Antonio; López Bueno, David (2011-11)
      Article
      Restricted access - publisher's policy
      The IEEE 802.16e-2005 standard, also denoted as mobile WiMAX, was introduced as one of the first real efforts towards the deployment of fourth generation communication systems providing fixed and mobile broadband wireless ...
    • A robust maximin approach for MIMO communications with imperfect channel state information based on convex optimization 

      Pascual Iserte, Antonio; Pérez Palomar, Daniel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (2006-01)
      Article
      Open Access
      This paper considers a wireless communication system with multiple transmit and receive antennas, i.e., a multiple-input-multiple-output (MIMO) channel. The objective is to design the transmitter according to an imperfect ...
    • A service-constrained positioning strategy for an autonomous fleet of airborne base stations 

      José Torra, Ferran; Pascual Iserte, Antonio; Vidal Manzano, José (Multidisciplinary Digital Publishing Institute (MDPI), 2018-10)
      Article
      Open Access
      This paper proposes a positioning strategy for a fleet of unmanned aerial vehicles (UAVs) airlifting wireless base stations driven by communication constraints. First, two schedulers that model the distribution of resources ...
    • A stochastic approach for resource allocation with backhaul and energy harvesting constraints 

      Rubio López, Javier; Muñoz Medina, Olga; Pascual Iserte, Antonio (2016-07)
      Article
      Open Access
      We propose a novel stochastic radio-resource-allocation strategy that achieves long-term fairness considering backhaul and air-interface capacity limitations. The base station (BS) is powered only with a finite battery ...
    • A tractable closed form approximation of the ergodic rate in Poisson cellular networks 

      Aravanis, Alexios; Tu Lam, Thanh; Muñoz Medina, Olga; Pascual Iserte, Antonio; Di Renzo, Marco (2019-07)
      Article
      Open Access
      The employment of stochastic geometry for the analysis and design of ultra dense networks (UDNs) has provided significant insights into network densification. In addition to the characterization of the network performance ...
    • Adaptive block Diagonalization and user scheduling with out of cluster interferenced 

      García Fernández, Juan José; García Armada, Ana; Rubio López, Javier; Pascual Iserte, Antonio; Font Bach, Oriol; Bartzoudis, Nikolaos (2014)
      Conference report
      Restricted access - publisher's policy
      Interference in a cellular network is one of the main impairments that needs to be overcome. Coordination among the Base Stations may enable the use of the interference to improve the transmission rate at the cost of ...
    • Analysis of downlink and uplink decoupling in dense cellular networks 

      Aravanis, Alexios; Muñoz Medina, Olga; Pascual Iserte, Antonio; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2016-12-22)
      Conference report
      Open Access
      Decoupling uplink (UL) and downlink (DL) is a new architectural paradigm where DL and UL are not constrained to be associated to the same base station (BS). Building upon this paradigm, the goal of the present paper is to ...
    • Approximations of the aggregated interference statistics for outage analysis in massive MTC 

      Liesegang Maria, Sergi; Pascual Iserte, Antonio; Muñoz Medina, Olga (Multidisciplinary Digital Publishing Institute (MDPI), 2019-12)
      Article
      Open Access
      This paper presents several analytic closed-form approximations of the aggregated interference statistics within the framework of uplink massive machine-type-communications (mMTC), taking into account the random activity ...
    • Array antennas for packet transmission networks 

      Pascual Iserte, Antonio; Ahmed, Nada; Pérez Neira, Ana Isabel (2002)
      Conference report
      Open Access
      In the last two decades, adaptive antennas have been applied widely to wireless communication networks with preexisting infrastructure ,i.e networks with base stations. A wide variety of adaptive algorithms has been ...
    • Asymptotic analysis of multiuser-MIMO networks with battery-constrained receivers 

      Rubio López, Javier; Pascual Iserte, Antonio; García Fernández, Juan José; García Armada, Ana; Font Bach, Oriol; Bartzoudis, Nikolaos (2014)
      Conference report
      Restricted access - publisher's policy
      In this paper, we present an asymptotic analysis of the behavior of a network where the mobile terminals are considered to be battery-powered devices provided with energy harvesting capabilities. The asymptotic analysis ...
    • Channel state Information and joint transmitter-receiver design in multi-antenna systems 

      Pascual Iserte, Antonio (Universitat Politècnica de Catalunya, 2005-02-17)
      Doctoral thesis
      Open Access
      Esta tesis aborda el problema del diseño de sistemas multiantena, donde el caso más general corresponde a un canal multi-input-multi-output (MIMO) con un transmisor y un receptor con más de una antena. La ventaja de estos ...
    • Characterization of the distortion of OFDM/OQAM modulations under frequency selective channels 

      Mestre Pons, Francesc X.; Sánchez Fernández, Matilde; Pascual Iserte, Antonio (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Conference lecture
      Restricted access - publisher's policy
      Filterbank based multicarrier modulations are well known to perform poorly in frequency selective channels when single tap carrier-by-carrier equalization is used. This degradation is cased by the inherent distortion ...
    • Closed-form capacity bounds for downlink and uplink decoupling 

      Aravanis, Alexios; Pascual Iserte, Antonio; Muñoz Medina, Olga (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Conference lecture
      Open Access
      Downlink (DL) and uplink (UL) decoupling (DUDe) is a new architectural paradigm where DL and UL are not constrained to be associated to the same base station (BS). Thus, a user having access to multiple BSs within a dense ...
    • Convex optimization theory applied to joint transmitter-receiver design in MIMO channels 

      Palomar, Daniel P.; Pascual Iserte, Antonio; Cioffi, John M.; Lagunas Hernandez, Miguel A. (John Wiley & Sons, 2005-04-30)
      Part of book or chapter of book
      Open Access
    • Coordinated MIMO precoding for power minimization in femtocell systems 

      Muñoz Medina, Olga; Vidal Manzano, José; Agustín de Dios, Adrián; Pascual Iserte, Antonio; Barbarossa, Sergio (IEEE, 2011)
      Conference report
      Restricted access - publisher's policy