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    • Business scenarios, technical challenges and system requirements - D2.1 

      Ferrús Ferré, Ramón Antonio; Moreno, Oscar; Visiedo, David; Urdiales, Diego; Santiago, Miquel Angel; Gebert, Jens; Mouton, Christian; Lange, Christian; Merat, Vincent; Bender, Paul; Wich, Andreas; Agustí Comes, Ramon; Muck, Markus; Schmmidt, Andreas; Logothetis, Marios; Akezidou, Maria; Tzifa, Lia; Tsagkaris, Kostas; Stavroulaki, Vera; Demestichas, Panagiotis; Matinmikko, Marja; Mustonen, Miia; Sallent Roig, Oriol; Pérez Romero, Jordi; Georgakopoulos, Andreas; Pecelj, Ilija; Boskovic, Dragan; Tosic, M.; Filo, Marcin; Piesiewicz, Radoslaw; Kritikou, Yiouli; Bantouna, Aimilia; Thomatos, Evangelos; Koutsouris, Nikos (2010-11)
      Report de recerca
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    • Capacidad de un sistema CDMA de comunicaciones moviles en presencia de canales dispersivos caracterizados con perfiles de retardo de potencia de tipo exponencial 

      Díaz Romero, M. del Pilar; Agustí Comes, Ramon (1991)
      Text en actes de congrés
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      CDMA is a digital multiple access technique in which each subscriber has his own identification code and all the transmitted signals share the same frequency band of the spectrum. This paper presents an approximative figure ...

    • Caracterización basada en OOD de la llegada de paquestes al canal en sistemas de comunicaciones móviles 

      Alonso Zárate, Luis Gonzaga; Agustí Comes, Ramon (1998)
      Text en actes de congrés
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    • Caracterización de un canal "indoor" como resultado de medidas en banda estrecha a 1.6 ghz 

      Valdovinos Bardají, Antonio; Rodríguez, L.; Agustí Comes, Ramon (1990)
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    • Characterization and exploitation of heterogeneous OFDM primary users in cognitive radio networks 

      Vizziello, Anna; Akyildiz, Ian F.; Agustí Comes, Ramon; Favalli, Lorenzo; Savazzi, Pietro (2013-08)
      Article
      Accés restringit per política de l'editorial

    • Cognitive pilot channel enabling spectrum awareness 

      Sallent Roig, Oriol; Pérez Romero, Jordi; Agustí Comes, Ramon; Cordier, Pascal (2009)
      Text en actes de congrés
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      This paper presents the Cognitive Pilot Channel (CPC) solution as a mechanism allowing the terminal to be aware of the communication means available at a given time and place in a flexible spectrum management scenario. The ...

    • Cognitive radio resource management exploiting heterogeneous primary users and a radio environment map database 

      Vizziello, Anna; Akyildiz, Ian F.; Agustí Comes, Ramon; Favalli, Lorenzo; Savazzi, Pietro (2013-08)
      Article
      Accés restringit per política de l'editorial
      The efficient utilization of radio resources is a fundamental issue in cognitive radio (CR) networks. Thus, a novel cognitive radio resource management (RRM) is proposed to improve the spectrum utilization efficiency. ...

    • Comportamiento de un circuito recuperador de portadora en presencia de una propagación multicamino para un radioenlace a 140Mb/s 

      Agustí Comes, Ramon (Unión Científica Internacional de Radio (URSI), 1983)
      Text en actes de congrés
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      This paper gives the variance of the phase recovered by a conventional quadriphase Costas loop in 16 QAM modulation in the presence of selective fading, represented as a two rays simplified model. The phase error variance ...

    • Comunicaciones por fibra óptica 

      Junyent Giralt, Gabriel; Cardama Aznar, Ángel; Delgado Penin, José Antonio; Agustí Comes, Ramon; Casadevall Palacio, Fernando José (Universitat Politècnica de Barcelona, 1980-12)
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      Esta comunicación es un breve resumen de las actividades que están realizando los Departamentos de Electrofisica Y Comunicación de la E.T.S.I.T. en el campo de las comu­nicaciones por fibra óptica, en concreto sobre:Sistemas ...

    • Conceptual framework for enabling measurement-based mechanisms. Document number D5.1 

      Agustí Comes, Ramon; Akyildiz, Ian F.; Pérez Romero, Jordi; Sallent Roig, Oriol; Bouali, Faouzi; Iacobelli, Lorenzo; Le Martret, Christophe; Grimoud, Sebastien; Ben Jemaa, Sana; Sayrac, Berna; Dimitriou, Nikos; Zalonis, Andreas; Polydoros, Andreas; Cai, Tao; Cao, Fengming; Mähönen, Petri; Riihijärvi, Janne (2011-02-28)
      Report de recerca
      Accés restringit per acord de confidencialitat

    • Congestion control strategies in multi-access networks 

      Gelabert Doran, Xavier Bernardi; Pérez Romero, Jordi; Sallent Roig, Oriol; Agustí Comes, Ramon (2006)
      Comunicació de congrés
      Accés obert
      This paper addresses the problematic of congestion control in the radio access interface when considering the allocation of voice and data services over several Radio Access Technologies (RATs). In particular, the GSMIEDGE ...

    • Constant false alarm rate control for frecuency hopping Spread Spectrum Systems 

      Agustí Comes, Ramon; Olmos Bonafé, Juan José (1989)
      Text en actes de congrés
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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)
      Text en actes de congrés
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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. ...

    • Contabilidad de sistemas de espectro ensanchado por salto de frecuencias y sistemas de banda estrecha en comunicaciones móviles 

      Agustí Comes, Ramon (Fundación Universidad-Empresa, 1986)
      Text en actes de congrés
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      En este trabajo se ha evaluado la posible compatibilidad que puede existir entre un sistema de espectro ensanchado (FH-MFSK) que utiliza saltos de frecuencia a gran velocidad y un sistema de banda estrecha en presencia de ...

    • Context discovery mechanisms for cognitive radio 

      Bolea, Liliana; Pérez Romero, Jordi; Agustí Comes, Ramon; Sallent Roig, Oriol (IEEE, 2011)
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      This paper addresses the estimation of different context parameters of a primary user network based on signal strength measurements obtained by a sensor network and without any prior knowledge of the antenna types used by ...

    • Correlation effects of frequency hopping diversity systems in indoor mobile communications environments 

      Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 1991)
      Text en actes de congrés
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      Frequency-Hopping (FH) techniques in conjunction with coding have been proposed for indoor radio systems based on the fact that FH behaves as an intrinsic frequency diversity technique. In this paper we assess the performance ...

    • D11.2 Consolidated results on the performance limits of wireless communications 

      Couillet, Romain; Debbah, Mérouane; di Renzo, Marco; Zaidi, Abdellatif; Piantanida, Pablo; Sanguinetti, Luca; Pfletschinger, Stephan; Navarro, Mónica; Vitiello, Carmine; Bacci, Giacomo; Luise, Marco; Pérez Romero, Jordi; Sánchez González, Juan; Agustí Comes, Ramon; Lorenzo, Beatriz; Glisic, Savo; Khatibi, Sina; Caeiro, Luisa; Correia, Luis M.; Moustakas, Aris; Arikan, Erdal; Lentmaier, Michael; Montorsi, Guido; Andriyanova, Iryna; Duhamel, Pierre; Hassan, Najeeb Ul; Shamai, Shlomo; Sayir, Jossy; Fleury, Bernard Henry; Larzabal, Pascal; Boyer, Rémy; Elkorso, Nabil; Bennamar, Myriam (2014-11)
      Report de recerca
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      The report presents the Intermediate Results of N# JRAs on Performance Limits of Wireless Communications and highlights the fundamental issues that have been investigated by the WP1.1. The report illustrates the Joint ...

    • D13.1 Fundamental issues on energy- and bandwidth-efficient communications and networking 

      Zalonis, Andreas; Polydoros, Andreas; Pascual Iserte, Antonio; Gregori, Maria; Rubio López, Javier; Fosson, Sophie; Matamoros, Javier; Antón Haro, Carles; Zambianchi, Vincenzo; Dardari, Davide; Bassi, Francesca; Chaini, Marco; Duhamel, Pierre; Kieffer, Michel; Karasan, Ezhan; Koseoglu, Mehmet; Chen, Lin; Gomez Viladerbó, Jesús; Kliks, Adrian; Kryszkiewicz, Pawel; Bogucka, Hanna; Oliveira, Carla; Mackowiak, Michal; Correia, Luis M.; Louet, Yves; Zhang, Honggang; Caus, Marius; Pérez Neira, Ana Isabel; Sanguinetti, Luca; Boukhatem, Lila; Martin, Steven; Ali Yahiya, Tara; Pérez Romero, Jordi; Koutlia, Katerina; Agustí Comes, Ramon; Dimitriou, Nikos; Stupia, Ivan; Vanderdorpe, Luc; Bacci, Giacomo; Andreotti, Ricardo; Giannetti, Filipo; Lottici, Vincenzo; del Fiorentino, Paolo; Belmega, Veronica; Lasaulce, Samson; Giupponi, Lorenza; Verdone, Roberto; Abrignani, Melchiorre Danilo (2014-03)
      Report de recerca
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      The report presents the current status in the research area of energy- and bandwidth-efficient communications and networking and highlights the fundamental issues still open for further investigation. Furthermore, the ...

    • D13.2 Techniques and performance analysis on energy- and bandwidth-efficient communications and networking 

      Zalonis, Andreas; Polydoros, Andreas; Rubio López, Javier; Pascual Iserte, Antonio; Gregori, Maria; Payaró, Miquel; Abrignani, Melchiorre D.; Giupponi, Lorenza; Cichon, Krzysztof; Louet, Yves; Nafka, Amor; Caus López, Marius; Pérez Neira, Ana Isabel; Mackowiak, Michal; Beko, Marko; Oliveira, Carla; Correia, Luis M.; Moretti, Marco; Pérez Romero, Jordi; Koutlia, Aikaterini; Agustí Comes, Ramon; Kliks, Adrian; Kryszkiewicz, Pawel; Bogucka, Hanna; Boukhatem, Lila; del Fiorentino, Paolo; Andreotti, Ricardo; Giannetti, Filipo; Lottici, Vincenzo; Van Hecke, Jeroen; Moeneclaey, Marc; Koseoglu, Mehmet; Karasan, Ezhan; Chen, Lin; Bacci, Giacomo; Belmega, Veronica; Debbah, Mérouane; Mertikopoulos, Panayotis; Sanguinetti, Luca; Stupia, Ivan; Vandendorpe, Luc; Bassi, Francesca; Kieffer, Michel (2014-10)
      Report de recerca
      Accés obert
      The report presents the status of the research work of the various Joint Research Activities (JRA) in WP1.3 and the results that were developed up to the second year of the project. For each activity there is a description, ...

    • D13.3 Overall assessment of selected techniques on energy- and bandwidth-efficient communications 

      Zalonis, Andreas; Polydoros, Andreas; Dagres, Ioannis; Rubio López, Javier; Gregori, Maria; Pascual Iserte, Antonio; Payaró Llisterri, Miquel; Gomez Viladerbó, Jesús; Kieffer, Michel; Bassi, Francesca; Abrignani, Melchiorre D.; Giupponi, Lorenza; Kliks, Adrian; Kryszkiewicz, Pawel; Bogucka, Hanna; Caus, Marius; Pérez Neira, Ana Isabel; Bader, Carlos; Bodinier, Quentin; del Fiorentino, Paolo; Giannetti, Filipo; Lottici, Vincenzo; Van Hecke, Jeroen; Moeneclaey, Marc; Pérez Romero, Jordi; Koutlia, Katerina; Agustí Comes, Ramon; Abdelkader, Abdelrahman; Koseoglu, Mehmet; Karasan, Ezhan; Chen, Lin (2015-10)
      Report de recerca
      Accés obert
      The report presents the outcome of the Joint Research Activities (JRA) of WP1.3 in the last year of the Newcom# project. The activities focus on the investigation of bandwidth and energy efficient techniques for current ...