Exploració per autor "Vidal Manzano, José"Més informacióMés informació

Ara es mostren els items 101-120 de 163

    • MCS and sub-band selection for downlink interference coordination in LTE-A Femtocells 

      Muñoz Medina, Olga; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper proposes a decentralized algorithm for interference coordination in LTE-A networks, based on the exchange of information (pricing) at control plane level. In our approach, every user equipment (UE) report the ...

    • MMSE precoding for receive spatial modulation in large MIMO systems 

      Raafat Hosny Mohamed Fahm, Ahmed; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2018)
      Comunicació de congrés
      Accés obert
      Receive spatial modulation (RSM) schemes enable simple and energy efficient multiple-input-multiple-output (MIMO) transceivers and yet attain high spectral efficiency, which renders them promising schemes for millimeter ...

    • Multi-user precoder designs for RGB visible light communication systems 

      Viñals Terrés, Roser; Muñoz Medina, Olga; Agustín de Dios, Adrián; Vidal Manzano, José (2020-11-29)
      Article
      Accés obert
      In this paper, we design linear precoders for the downlink of a visible light communication (VLC) system that simultaneously serves multiple users. Instead of using phosphor-coated white light-emitting diodes (PWLEDs), we ...

    • Net DoF analysis for the K-user MISO IC with outdated and imperfect channel feedback 

      Torrellas Socastro, Marc; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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      The net degrees of freedom (DoF ) describe the efficiency of a protocol in terms of network throughput at high signal-to-noise ratio (SNR). As the conventional DoF, it captures how the achievable user data rate grows as ...

    • Network dimensioning and base station on/off switching strategies for sustainable deployments in remote areas 

      Rubio López, Javier; Olmo Alòs, Jaume del; Pascual Iserte, Antonio; Vidal Manzano, José; Muñoz Medina, Olga; Agustín de Dios, Adrián (2017-12)
      Article
      Accés obert
      This paper provides a methodology for the dimensioning of the access network in remote rural areas, considering the progressive introduction of cellular services in these regions. A 3G small cell (SC) network with one or ...

    • Network MIMO for downlink in-band relay transmissions with relaying phases of fixed duration 

      Agustín de Dios, Adrián; Vidal Manzano, José; Lagén Morancho, Sandra; Valera, Eduard (2011)
      Text en actes de congrés
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      A half-duplex relay station (RS)-based cellular system deployment is considered, where multiple base stations (BS) cooperate in the BS-RS in-band transmission for the downlink. The duration of the relay-receive and the ...

    • Network-MIMO backhauling for QOS-constrained relay transmission 

      Vidal Manzano, José; Agustín de Dios, Adrián; Lagén Morancho, Sandra; Valera, Eduard; Muñoz Medina, Olga; García Armada, Ana; Sánchez Fernández, Matilde (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A relay station (RS)-based cellular system deployment is considered, where multiple base stations (BS) cooperate in the BS-RS in-band transmission for the downlink. With the joint optimization of the resources allocated ...

    • Network-MIMO for downlink in-band relay transmissions 

      Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (2013-01-23)
      Article
      Accés restringit per política de l'editorial
      With the objective of improving the spectral efficiency and coverage homogeneity of wireless cellular systems in the downlink, we investigate how to take advantage of two promising transmission technologies envisioned in ...

    • New hos-based parameter estimation methods for speech recognition in noisy environments 

      Moreno Bilbao, M. Asunción; Tortola, S; Vidal Manzano, José; Rodríguez Fonollosa, José Adrián (. S.N., 1995)
      Text en actes de congrés
      Accés obert
      The problem of recognition in noisy environments is addressed. Often, a recognition system is used in a noisy environment and there is no possibility of training it with noisy samples. Classical speech analysis techniques ...

    • NLOS mitigation based on TOA for mobile subscriber positioning systems by weighting measures and geometrical restrictions 

      René Jativa, E.; Sanchez, David; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper studies the Non-Line-Of-Sight condition mitigation issue in mobile subscriber positioning systems by weighting Time-Of-Arrival measures and applying geometrical estrictions. Particularly, this work departs from ...

    • Non-noticeable information embedding in color images: marking and detection 

      Vidal Manzano, José; Sayrol Clols, Elisa; Cabanillas, Silvia; Santamaria, Sonia (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      One of the problems arising from the use of digital media is the ease of obtaining identical copies of digital images or audio files, allowing manipulation and unauthorized use. Copyright is an effective tool for preserving ...

    • On the degrees of freedom of the K-user MISO interference channel with imperfect delayed CSIT 

      Torrellas Socastro, Marc; Agustín de Dios, Adrián; Vidal Manzano, José (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This work investigates the degrees of freedom (DoF) of the K-user multiple-input single-output (MISO) interference channel (IC) with imperfect delayed channel state information at the transmitters (dCSIT). For this setting, ...

    • On the superiority of improper Gaussian signaling in wireless interference MIMO scenarios 

      Lagén Morancho, Sandra; Agustín de Dios, Adrián; Vidal Manzano, José (2016-08)
      Article
      Accés obert
      Recent results have elucidated the benefits of using improper Gaussian signaling (IGS) as compared to conventional proper Gaussian signaling (PGS) in terms of achievable rate for interference-limited conditions. This paper ...

    • On the Totally Asynchronous Interference Channel with Single-User Receivers 

      Calvo Page, Eduard; Rodríguez Fonollosa, Javier; Vidal Manzano, José (IEEE Press. Institute of Electrical and Electronics Engineers, 2009)
      Text en actes de congrés
      Accés obert
      The performance characterization of decentralized wireless networks with uncoordinated sender-destination pairs motivates the study of the totally asynchronous interference channel with single-user receivers. Since this ...

    • Optimal array combiner and sequence detector in mobile radio channels 

      Vidal Manzano, José; Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel; Rodríguez Fonollosa, Javier (1998)
      Text en actes de congrés
      Accés obert
      The use of spatial diversity at the receiver front-end together with a sequence detector implies a joint design problem of the spatial combiner and the sequence detector impulse response. This joint design is usually faced ...

    • Optimal array combiner for sequence detectors 

      Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel; Vidal Manzano, José (1998)
      Text en actes de congrés
      Accés obert
      The use of spatial diversity at the receiver front-end together with a sequence detector implies a joint design problem of the spatial combiner and the sequence detector impulse response. This joint design is usually faced ...

    • Optimization of radio and computational resources for energy efficiency in latency-constrained application offloading 

      Muñoz Medina, Olga; Pascual Iserte, Antonio; Vidal Manzano, José (2015-10)
      Article
      Accés obert
      Providing femto access points (FAPs) with computational capabilities will allow (either total or partial) offloading of highly demanding applications from smartphones to the so-called femto-cloud. Such offloading promises ...

    • Optimizing access demand for mMTC traffic using neural networks 

      Llobet Turró, Martí; Cabrera-Bean, Margarita; Vidal Manzano, José; Agustín de Dios, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2023-12)
      Article
      Accés obert
      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 ...

    • Optimum Watermark Detection and Embedding in Digital Images 

      Vidal Manzano, José; Sayrol Clols, Elisa (Ping Wah Wong, Abeer Alwan, Antonio Ortega, C.-C. Jay Kuo, C.L. Max Nikias/ IEEE, 1998)
      Text en actes de congrés
      Accés obert
      This work concentrates on the problem of watermarking of still images using the luminance component, through the use of spread spectrum techniques, both in space (direct sequence spread spectrum or DSSS) and frequency ...

    • Optimum watermark detection in color images 

      Sayrol Clols, Elisa; Vidal Manzano, José; Cabanillas, Silvia; Santamaria, Sonia (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      This work concentrates on the problem of watermarking embedding and optimum detection in color images through the use of spread spectrum techniques both in space (Direct Sequence Spread Spectrum or DSSS) and frequency ...