Now showing items 1-20 of 62

  • 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
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    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 ...
  • Achievable DoF-delay trade-offs for the K-user MIMO interference channel with delayed CSIT 

    Torrellas, Marc; Agustín de Dios, Adrián; Vidal Manzano, José (2016-12-01)
    Article
    Open Access
    The degrees of freedom (DoFs) of the K-user multiple-input multiple-output (MIMO) interference channel are studied when perfect, but delayed channel state information is available at the transmitter side (delayed CSIT). ...
  • Adaptive bitrate and resource allocation for relay-assisted ARQ transmissions 

    Agustín de Dios, Adrián; Vidal Manzano, José; Muñoz Medina, Olga (2009)
    Conference report
    Open Access
    Automatic repeat request (ARQ) protocols deal with the situations where the selected data rate is not supported by the current channel realization. The inappropriate selection is motivated by the limited channel state ...
  • Analytical resource optimization for DF relay-assisted transmission under HARQ 

    Agustín de Dios, Adrián; Vidal Manzano, José; Muñoz Medina, Olga (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
    Conference report
    Open Access
    Under limited channel state information at the transmitter the communication suffers from the outage events produced by a data rate selection not supported by the current channel realization. Automatic repeat request (ARQ) ...
  • Channel training procedures for MIMO interfering point-to-multipoint channel 

    Agustín de Dios, Adrián; Lagén Morancho, Sandra; Vidal Manzano, José (2014)
    Conference report
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    A precise knowledge of the MIMO channel between the serving node and the user equipment (UE) is important for attaining good data rates in downlink transmissions (DL) in cellular systems. The interfering point-tomulti ...
  • Coexisting linear and widely linear transceivers in the MIMO interference 

    Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (2016-01)
    Article
    Open Access
    Recent results have shown the benefits of widely linear precoding (WLP) in the MIMO interference channel (MIMO IC) assuming that all transmitters can follow the same strategy. Motivated by a transitional scenario where ...
  • Cooperative linear precoding for multi-user MISO visible light communications 

    Viñals Terrés, Roser; Muñoz Medina, Olga; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    This paper develops and evaluates precoding techniques for coordinated joint transmission in visible light communications (VLC). A multi-user multiple-input single-output (MISO) setup is adopted. Transmitters are equipped ...
  • 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
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  • Decentralized beamforming with coordinated sounding for inter-cell interference management 

    Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (VDE Conference Publications, 2014)
    Conference report
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    This paper presents and evaluates a decentralized beamforming design for inter-cell interference management that is highly recommended in Time Division Duplex (TDD) cellular network deployments and interference limited ...
  • Decentralized coordinated precoding for dense TDD small cell networks 

    Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (2015-08-01)
    Article
    Open Access
    Cellular networks need the densification of small eNBs (SeNBs) to face the tremendous data traffic demand growth, implying an interference increase and making transmit coordination a key enabler. This article proposes a ...
  • Decentralized weighted sum rate maximization in MIMO-OFDMA femtocell networks 

    Agustín de Dios, Adrián; Vidal Manzano, José; Muñoz Medina, Olga; Rodríguez Fonollosa, Javier (2012)
    Conference report
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    We propose a decentralized strategy for downlink interference management in overlaid MIMO femtocell-macrocell deployments operating in the same band under OFDMA access. The resource allocation, consisting of MIMO precoders ...
  • Decentralized widely linear precoding design for the MIMO interference channel 

    Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (2014)
    Conference report
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    his paper addresses the interference management in a MIMO interference channel (MIMO-IC) by proposing a decentralized transmit and receive beamformer optimization using improper (or circularly asymmetric complex) Gaussian ...
  • Degrees of freedom of the rank-deficient MIMO X channel 

    Agustín de Dios, Adrián; Vidal Manzano, José (2013)
    Conference report
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    The multiple-input multiple-output (MIMO) X channel with rank-deficient channels is considered. We characterize the total degrees of freedom (DoF) by defining an outer bound which is attained by the proposed precoding ...
  • Delay minimization in dynamic and scalable multi-operator wireless backhauling 

    Surís, Didac; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    This paper focuses on the optimization of routing and interference-aware resource allocation for a wireless backhaul network, focusing on the end-to-end delay minimization. We adopt a convex optimization formulation, which ...
  • Deliverable D21 (project TUCAN3G). Socio-economic scenarios, technical specifications and architecture for the proof of concept 

    García Rey, Ana; Prieto Egido, Ignacio; Sánchez, Ernesto; Muñoz Medina, Olga; Vidal Manzano, José; Agustín de Dios, Adrián; Pascual Iserte, Antonio; Simó Reigadas, Javier; Paco Fernández, Juan; Castillo Molina, Yury Yohana; Ramírez, Gustavo; Tupayachi Calderón, Omar (2013-05)
    External research report
    Open Access
    TUCAN3G aims to develop solutions to provide 3G services in isolated rural areas of developing countries. In order to do so, this document starts by analysing the reference scenarios where TUCAN3G solutions could be applied, ...
  • Deliverable D22 (project TUCAN3G). Operational technical handbook 

    Prieto Egido, Ignacio; Martínez Fernández, Andrés; Sotelo López, Carlos; Agustín de Dios, Adrián; Vidal Manzano, José; Simó Reigadas, Javier; Paco Fernández, Juan; Rendón, Álvaro (2013-05)
    External research report
    Open Access
    This document shows a detailed plan for the work required to accomplish the objectives of TUCAN3G. All partners have contributed to this document by defining tasks and subtask, in coordination with the technical coordinator ...
  • Distributed inter-cluster interference management for CoMP-based cellular networks 

    Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (2013)
    Conference report
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    This paper proposes distributed inter-cluster interference management procedures for 1 Coordinated Multi-Point (CoMP) Time Division Duplexing (TDD) cellular networks, in which a set of base stations (BSs), that form a ...
  • Distributed user-centric clustering and precoding design for CoMP joint transmission 

    Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José; Soret, Beatriz; Pedersen, Klaus (2015)
    Conference report
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    This paper addresses distributed interference management in downlink of multi-cell multiple- input multiple-output (MIMO) time division duplex (TDD) networks. Each user is associated with a user-centric cluster of base ...
  • Downlink coordinated radio resource management in cellular networks with partial CSI 

    Calvo Page, Eduard; Muñoz Medina, Olga; Vidal Manzano, José; Agustín de Dios, Adrián (2012-03)
    Article
    Restricted access - publisher's policy
    We explore decentralized coordination of sectored cellular networks to adapt the usage of downlink resources to the instantaneous network conditions. The transmission frame consists of an orthogonal bandwidth usage ...
  • Downlink multi-cell radio resource management for coordinated base stations 

    Muñoz Medina, Olga; Calvo Page, Eduard; Vidal Manzano, José; Agustín de Dios, Adrián (2010)
    Conference report
    Open Access