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Ara es mostren els items 42-61 de 89

    • Impact of downlink signaling capacity constraints on the provision of QoS in LTE 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Choosing appropriate scheduling policies is of utmost importance to deliver acceptable levels of Quality of Service (QoS) to users of LTE networks. This decision is not only conditioned by the type of services expected ...

    • Improved scheduling decisions for LTE-A uplink based on MPR information 

      Lema, Maria A.; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2013)
      Text en actes de congrés
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      Advanced (LTE-A) allows for non-contiguous resource allocation in the uplink. The aim is to increase the spectral efficiency by exploiting users’ frequency diversity gain. This feature implies that clustered-DFT-S-OFDM must ...

    • Improved scheduling techniques for efficient uplink communications with carrier aggregation 

      Lema Rosas, María Ángel; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2013)
      Text en actes de congrés
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      Transmitted power in Long Term Evolution - Advanced (LTE-A) uplink (UL) is strongly related to the number of physical resource blocks (PRBs) allocated. As the transmitted bandwidth increases power does so. However, this ...

    • Improving channel state information feedback for static Intercell interference coordination in LTE 

      González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Intercell Interference is the main issue limiting the capacity of modern OFDMA-based cellular networks. Recently, extensive research work has been focused on intercell interference coordination since it has been recognized ...

    • Link abstraction for variable bandwidth with incremental redundancy HARQ in LTE 

      Latif, Imra; Kaltenberger, Florian; Knopp, Raymond; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
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      Incremental redundancy hybrid automatic repeat request (IR-HARQ) scheme used in recent wireless communication standards such as 3GPP LTE provides higher benefits in terms of system capacity and robustness. To map these ...

    • Link abstraction models based on mutual information for LTE downlink 

      Olmos Bonafé, Juan José; Ruiz Boqué, Sílvia; García Lozano, Mario; Martín Sacristán, David (2010-06-02)
      Comunicació de congrés
      Accés obert

    • Link and system level simulation of downlink LTE 

      González González, David; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José; García Lozano, Mario; Serra, Albert (2009-02-28)
      Text en actes de congrés
      Accés obert
      3GPP LTE is the evolution of the UMTS which will make possible to deliver next generation high quality multimedia services according to the users’ expectations. Since Radio Resource Management (RRM) has been recognized as ...

    • Link level simulator for LTE downlink 

      Olmos Bonafé, Juan José; Serra, Albert; Ruiz Boqué, Sílvia; García Lozano, Mario; González González, David (COST, 2009-02-28)
      Text en actes de congrés
      Accés obert
      3GPP LTE is the evolution of UMTS which will make possible to deliver next generation high quality multimedia services according to the users’ expectations. The flexibility of the downlink OFDM radio interface with Adaptive ...

    • Low complexity link abstraction for retransmission in LTE/LTE-advanced with IR-HARQ 

      Latif, Imra; Kaltenberger, Florian; Knopp, Raymond; Olmos Bonafé, Juan José (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Recent wireless cellular systems, like 3GPP’s Long Term Evolution (LTE) and LTE-Advanced (LTE-A), benefit from many enhancements of wireless techniques. These include multicarrier modulation schemes, fast link adaptation, ...

    • Low-cost test measurement setup for real IoT BLE sensor device characterization 

      Pérez Díaz de Cerio, David; Hernandez Solana, Angela; Valdovinos, Antonio; Olmos Bonafé, Juan José; Valenzuela González, José Luis (2019-03-01)
      Article
      Accés obert
      The methodology presented in this paper aims to characterize impairments shown by real devices which are usually neglected on standardized tests but that become very important in massive IoT scenarios. For instance, we ...

    • LTE UL power control evaluation in a system level simulator for synthetic and realistic scenarios 

      Lema, Maria A.; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José; Pérez Díaz de Cerio, David (2011)
      Text en actes de congrés
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      The research involved in this study comprises the analysis of the impact of the power control algorithm and its performance in the system level. Following our work in TD 01040, the LTE system level simulator has been ...

    • Machine learning adaptive computational capacity prediction for dynamic resource management in C-RAN 

      Guerra Gómez, Rolando; Ruiz Boqué, Sílvia; García Lozano, Mario; Olmos Bonafé, Juan José (2020-05-23)
      Article
      Accés obert
      Efficient computational resource management in 5G Cloud Radio Access Network (C-RAN)environments is a challenging problem because it has to account simultaneously for throughput, latency,power efficiency, and optimization ...

    • Machine-learning based traffic forecasting for resource management in C-RAN 

      Guerra Gómez, Rolando; Ruiz Boqué, Sílvia; García Lozano, Mario; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2020)
      Text en actes de congrés
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      The assumption of a fixed computational capacityat the Baseband Unit (BBU) pools in a Cloud Radio Access Network (C-RAN) deployment results in underutilized resourcesor unsatisfied users depending on ...

    • Metaheuristic proposal to minimize self-interference in single frequency networks 

      García Lozano, Mario; Ruiz Boqué, Sílvia; Lema, Maria A.; Torras, Evelyn; Olmos Bonafé, Juan José; Minerva, Flaminio (2010-06-02)
      Text en actes de congrés
      Accés obert

    • Modelling approach used in the real time emulator of the Rainbow demonstrator 

      Díaz Romero, M. del Pilar; Olmos Bonafé, Juan José; Berberana, Ignacio; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 1997)
      Text en actes de congrés
      Accés obert
      An overview of the main characteristics of the real time emulator (RTE) to be implemented in the context of the Rainbow project is presented. First of all, the RTE functional description is shown in order to justify the ...

    • Modelling approach used in the real time emulator of the rainbow demostrator 

      Díaz Romero, M. del Pilar; Olmos Bonafé, Juan José; Berberana, Ignacio; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 1997)
      Text en actes de congrés
      Accés obert
      An overview of the main characteristics of the real time emulator (RTE) to be implemented in the context of the Rainbow project is presented. First of all, the RTE functional description is shown in order to justify the ...

    • Modelling channel estimation error in LTE link level simulations 

      Serra, Albert; Olmos Bonafé, Juan José; Lema Rosas, María Ángel (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Channel estimation is a key aspect for the performance of the physical layer in all MIMO-OFDM systems. In order to obtain realistic performance assessments from the LTE link level simulator, channel estimation errors must ...

    • NAVEGACIÓ AÈRIA, CARTOGRAFIA I COSMOGRAFIA (Examen parcial, 1r quadrimestre) 

      Olmos Bonafé, Juan José (Universitat Politècnica de Catalunya, 2022-10-26)
      Examen
      Accés restringit a la comunitat UPC

    • On the behavior of the LINC transmitter 

      Casadevall Palacio, Fernando José; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 1990)
      Text en actes de congrés
      Accés obert

    • On the definition of reference scenarios for LTE-A Link level simulations within COST IC1004 

      Olmos Bonafé, Juan José; Serra, Albert; Ruiz Boqué, Sílvia (2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The simulation of LTE and LTE-A at link level is a research topic for several COST IC1004 institutions. It was agreed in previous meetings that it would be useful to define a common set of scenarios for LTE and LTE-A link ...