Ara es mostren els items 1-20 de 65

  • A novel ICIC-oriented channel state information feedback scheme for aperiodic reporting in LTE 

    González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2012)
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    In moderm OFDMA-based cellular networks, intercell interference is the main issue limiting the capacity of these systems. Recently, intensive research work has been focused on intercell interference coordination as it ...
  • Admission control in LTE uplink systems with sounding reference signals based channel state indicator 

    Lema, Maria A.; Ramon Ferran, Sergi; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2012)
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    This article focuses on the investigation of the Admission Control techniques in order to assure Quality of Service (QoS) in Long Term Evolution (LTE) systems. So as to estimate the users bandwidth requirement, Sounding ...
  • An analytical view of static intercell interference coordination techniques in OFDMA networks 

    González González, David; García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (IEEE, 2012)
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    This paper presents a novel methodology to assess the downlink performance of static intercell interference coordination techniques in the context of OFDMA-based cellular networks. In the last few years, interference ...
  • Analysis and design of the second order delay-lock loop in a CDMA system 

    Olmos Bonafé, Juan José; Agustí Comes, Ramon (. VEHICULAR TECHNOLOGY CONFERENCE'92, 1992)
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    In code-division multiple access (CDMA) systems a delay-lock loop (DLL) is used to keep a fine alignment between sequences. A simulation program for the second-order DLL has been developed. The program allows an optimum ...
  • Analytical modeling and performance evaluation of cell selection algorithms for mobile networks with backhaul capacity constraints 

    Olmos Bonafé, Juan José; Ferrús Ferré, Ramón Antonio; Galeana Zapién, Hiram (2013-10-28)
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    Accés restringit per política de l'editorial
    Wireless communications technologies play an essential role to support the Public Protection and Disaster Relief (PPDR) operational needs. The current Private/Professional Mobile Radio (PMR) technologies used for PPDR ...
  • Chip level simulation of the downlink in UTRA-FDD 

    Olmos Bonafé, Juan José; Ruiz Boqué, Sílvia (Institute of Electrical and Electronics Engineers (IEEE), 2000)
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    The specifications of UMTS Terrestrial Radio Access (UTRA) for the physical layer of the downlink make use of orthogonal variable spreading factor (OVSF) codes to preserve the orthogonality between downlink channels of ...
  • Comparison of 3G-LTE DL scheduling strategies 

    Ruiz Boqué, Sílvia; Haro, Eva; González González, David; García Lozano, Mario; Olmos Bonafé, Juan José (2009-05-18)
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  • Comparison of different distributed scheduling strategies for static/dynamic LTE scenarios 

    Ruiz Boqué, Sílvia; Haro, Eva; González González, David; García Lozano, Mario; Olmos Bonafé, Juan José (2009-09-30)
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  • Comparison of multicast/broadcast services in long term evolution advanced and IEEE 802.16m networks 

    Calabuig Gaspar, Jorge; Monserrat del Río, José Francisco; Martín-Sacristán Gandía, David; Olmos Bonafé, Juan José (2012-03-21)
    Article
    Accés restringit per política de l'editorial
    This paper performs a comparison of multicast/broadcast services (MBS) support in Long Term Evolution Advanced (LTE-A) and Worldwide Interoperability for Microwave Access (WiMAX) IEEE 802.16m. Firstly, the main ...
  • Constant false alarm rate control for frecuency hopping Spread Spectrum Systems 

    Agustí Comes, Ramon; Olmos Bonafé, Juan José (1989)
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    A control scheme suitable for setting the false alarm rate to a fixed value in frequency hopping spread spectrum communications is proposed. the scheme performance is determined in the presence of partial band interference. ...
  • Constant false alarm rate control for frequency hopping spread spectrum systems 

    Agustí Comes, Ramon; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 1989)
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    A control scheme suited for setting the false alarm rate to a fixed value in Frequency-Hopping Spread-Spectrum Communications is proposed. The scheme performance is determined in the presence of a partial band interference. ...
  • CPICH power optimisation by means of simulated annealing in an UTRA-FDD environment 

    García Lozano, Mario; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José (2003-11)
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  • Creació de recursos en línea per a l’autoaprenentage, foment de l’esperit crític i emprenedor i formació d’un comité d’avaluació externa en el màster MERIT 

    Pradell i Cara, Lluís; Cabrera Beán, Margarita Asuncion; Canal Bienzobas, Fernando; Cardama Aznar, Ángel; Gasull Llampallas, Antoni; González Arbesú, José María; Giró Nieto, Xavier; Heldring, Alexander; Herranz Luis, Jaime; Jofre Roca, Lluís; Mallorquí Franquet, Jordi Joan; Nadeu Camprubí, Climent; Olmos Bonafé, Juan José; Romeu Robert, Jordi; Rius Casals, Juan Manuel; Torres Torres, Francisco; Úbeda Farré, Eduard; Coderch Collell, Marcel; Kerans, Mary Ellen; Ros Giralt, Jordi; García, Antonio; González Font, Blanca; Guardiola Garcia, Marta; Hernández, Antoni; Melgarejo, Natali; Mestres, Albert (2009-02-12T10:25:51Z)
    Comunicació de congrés / Text en actes de congrés
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    El projecte es desenvolupa en el marc de la titulació oficial de màster MERIT del Departament de Teoria del Senyal i Comunicacions. El màster, orientat a la recerca i integrat dins del programa Erasmus Mundus, presenta ...
  • Decision feedback equalization and carrier recovery in 140 Mbit QAM digital radio systems 

    Olmos Bonafé, Juan José; Agustí Comes, Ramon; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 1988)
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    The tracking behavior of a decision-feedback equalizer coupled to a carrier recovery loop in the presence of dynamic multipath-fading activity is studied. Minimum-phase/non-minimum-phase-type fading transitions, with ...
  • Desarrollo de sistemas de recuperación de sincronismos para un modem FH TCM 8-DPSK basado en el TMS320C30 

    Olmos Bonafé, Juan José (1991)
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    In this paper we develop the synchronisation subsystems (carrier .frequency, symbol timing and unique word) for a Frequency Hopping-Trellis Coded 8-DPSK scheme for narrow band indoor mobile communications. The system ...
  • Design and implementation of a wide-band real-time mobile channel emulator 

    Olmos Bonafé, Juan José; Gelonch Bosch, Antonio José; Casadevall Palacio, Fernando José; Femenias Nadal, Guillem (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 1999-05)
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    A new wide-band mobile channel emulator for the CODIT project is designed and implemented. The UMTS code-division testbed (CODIT R2020) is a research project within the European RACE-II program set up by the Commission of ...
  • Design and implementation of a wide-band real-time mobile channel emulator 

    Olmos Bonafé, Juan José; Gelonch Bosch, Antonio José; Casadevall Palacio, Fernando José; Femenias Nadal, Guillem (1999-05)
    Article
    Accés obert
    A new wide-band mobile channel emulator for the CODIT project is designed and implemented. The UMTS code-division testbed (CODIT R2020) is a research project within the European RACE-II program set up by the Commission of ...
  • Determinación de la probabilidad de error en sistemas de comunicación digital por fibras ópticas: estudio comparativo de métodos “cuasi-exactos” 

    Casadevall Palacio, Fernando José; Junyent Giralt, Gabriel; Olmos Bonafé, Juan José; Agustí Comes, Ramon (1983)
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    En este trabajo se presenta un estudio comparativo de diversos métodos para calcular la probabilidad de error en un sistema de comunicación digital por fibra óptica. Los procedimientos utilizados permiten determinar el ...
  • Downlink resource allocation in LTE: centralized vs. distributed approach 

    González González, David; Corvino, Virginia; Ruiz Boqué, Sílvia; Olmos Bonafé, Juan José; García Lozano, Mario; Verdone, Roberto (2009-09-30)
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    The 3GPP specifications for LTE leave many degrees of freedom to operators about how to design radio Resource Allocation (RA) strategies, and this is actually also allowed by the OFDM/OFDMA access technology. This means ...
  • Dual-polarized channel characterization based on measurements in in-service UMTS networks 

    Zhang, Wenjie; Yin, Xuefeng; He, Yonguy; Yu, Jiwei; Zhang, Nan; Zhong, Zhimeng; Duan, Weiming; Zhang, Xiaomei; Olmos Bonafé, Juan José (Institute of Electrical and Electronics Engineers (IEEE), 2013)
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    In this contribution, the measurements conducted in an in-service Universal Mobile Telecommunication System (UMTS) network in the Minghang campus of Shanghai Jiaotong University, China, are reported. The outdoor measurement ...