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Francisco Javier Ramos LópezProfessorKnowledge area: Signal Theory and Communications Office #: 101 (Edificio Gestión) Phone Number: 91488 7221
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Prof. Javier Ramos received the degree in Telecommunication Engineering and the doctorate degree (together equivalent to B.Sc., M.Sc., and Ph.D. degrees in electrical engineering) from the Universidad Politecnica de Madrid, Spain, in 1991 and 1995 respectively. Between 1992 and 1995 he cooperated in several research projects at Purdue University, Indiana, USA, working in the field of Signal Processing for Communications. During 1996 he was a Post-Doctoral Research Associate at Purdue University. From 1997 to 2003 he was an Associate Professor at Universidad Carlos III de Madrid. Since 2003 he has been the Dean of the Telecommunications Engineering School at Universidad Rey Juan Carlos in Madrid, Spain. His research interests lie in the areas of signal processing, mobile communications and networking. |
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Telecommunications Engineering (5 year diploma)
Master in Telecommunication Networks for Developing Countries
Double Degree Program in Telecommunications Engineering and Informatics Engineering
Double Degree Program in Telecommunications Engineering and Bussiness Administration
M. Sc. Multimedia and Communications
Telecommunication Systems Engineering
Critical Comunications: When Information Systems Cannot Fail
International Master in International Tourism Management
Master in Information Technology and Communications in Biomedical Engineering
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Intranets Radio: Optimizing service qualityStart Date: 2001-01-01 End Date: 2002-12-31 Mobile Real Time TV Via Satellite Systems (MOBILITY)Start Date: 2001-01-01 End Date: 2003-03-01 Laboratory of Mobiles of Broad Band for Experimental Center of Wireless Communications (CECI)Start Date: 2004-01-01 End Date: 2005-03-01 Java Utilities for Enhanced Videoservices Enabling (Jueves)Start Date: 2005-01-01 End Date: 2006-12-31 Isolated heterogeneous wireless networks for remote areas of developing countriesStart Date: 2005-10-01 Wireless heterogeneous Ad-Hoc with cooperative diversity: investigation(research) and design across caps (TEC2005 - 06766-C03-01)Start Date: 2005-12-31 End Date: 2008-12-30 Processing Multimedia Distributed (Pro.Multidis)Start Date: 2006-01-01 End Date: 2009-12-31 PIRAmIDE: Personalizable interactions with resources on ami-enabled mobile dynamic enviromentsStart Date: 2008-09-01 End Date: 2010-12-01 GUIADEStart Date: 2008-12-01 End Date: 2011-01-31 Complex Interrelationship Tools between Interpretative Accident Variables (ACCIDENT0).Start Date: 2009-10-30 End Date: 2011-10-30 Distributed Processing in Wireless Sensor Networks: Application to Remote Multimode Patient Monitoring and Energy Efficiency (DistProc-WiSeNet) (Ref.: TEC2009–12098)Start Date: 2010-01-01 End Date: 2012-12-31 University: Rey Juan Carlos University (URJC) Lugar: Madrid, Spain |
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Localización de Dispositivos Multiplataforma en Entornos HospitalariosStart Date: 2006-10-01 End Date: 2007-07-01 Localization in indoor environments using dimensional networks and wireless technologiesStart Date: 2006-10-30 End Date: 2007-10-29 Campaigns spectrum quality measures under the project MeseStart Date: 2007-04-24 End Date: 2008-04-23 Tests of a prototype platform for distributing multimedia content over WiFi to the X-CONTStart Date: 2007-04-24 End Date: 2008-04-23 Evaluation of benefits and feasibility studies of the distribution of multimedia content on Rural WiFi project to X-CONTStart Date: 2007-04-24 End Date: 2008-04-23 Definición de especificaciones de plataforma software de bajo coste para distribución de contenidos multimedia en el marco del proyecto X-CONTStart Date: 2007-04-24 End Date: 2008-04-23 Definition and technical platform for automated measurement of the quality spectrum from the project MeseoStart Date: 2007-04-24 End Date: 2008-04-23 Analysis of competitors and PAMBOXStart Date: 2007-04-24 End Date: 2007-06-23 Adaptation of a software platform for multimedia content distribution via Wifi to the X-CONTStart Date: 2007-04-24 End Date: 2008-04-23 Course Radio Madrid Barajas AirportStart Date: 2007-05-04 End Date: 2007-07-31 Report SW tools for sensor networksStart Date: 2007-06-12 End Date: 2007-07-18 Consulting to undertake the work related to the sector of telecommunications infrastructure in the Plan of Land of Castilla la ManchaStart Date: 2007-07-30 End Date: 2009-07-30 Análisis de Señal para Monitorización de Holter Prolongada en Estratificación de Riesgo Cardíaco Signal Analysis for Holter Monitoring in Long-term Cardiac Risk StratificationStart Date: 2007-10-01 End Date: 2009-03-31 Development of a Prototype tests for indoor location through ZigBee TechnologyStart Date: 2007-10-18 End Date: 2008-01-17 Sistemas de navegación por satélite. El programa europeoStart Date: 2008-04-16 End Date: 2008-07-04 Seminar on "ICT and Quality of Life"Start Date: 2008-05-09 End Date: 2008-07-08 Introduction and implementation of an application that allows the recording of incidents that occur at Calle 30, monitoring, mapping, calculation of a set of benchmarks and exploitation dynamicsStart Date: 2008-06-20 End Date: 2009-01-19 Remote control cars (Robot Racing). Campus PartyStart Date: 2008-07-31 End Date: 2008-08-02 Lugar: Campus Party Valencia Multiplanta and precise location in three dimensions in indoor environments using wireless networks and ZigBee typeStart Date: 2008-10-01 End Date: 2009-06-30 Chair in critical services and systems of communication and informationStart Date: 2008-10-30 End Date: 2010-10-29 Scientific-technical report on location of origin of arrhythmias by analysis of signals stored in implantable defibrillatorStart Date: 2009-02-13 End Date: 2009-05-12 Seminar on Communications Vehicle for personal autonomy and independent living of vulnerable groupsStart Date: 2009-03-12 End Date: 2009-05-11 AROMA - Remote Access to Support Media OperationsStart Date: 2009-06-01 End Date: 2010-12-31 |
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| PHD THESIS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Power Minimization for Adaptive Systems based on Quantized Channel State InformationPerformance of wireless communication systems (quantified in terms of transmission rate, power e±ciency or error probability) degrades severely due to fading effects introduced by the shared air-interface. This degradation can be mitigated if channel state information (CSI) is available at the receiver and/or the transmitter side. Full CSI can be assumed when sufficient training allows for essentially perfect channel estimation, while quantized CSI can be used when only the class (cluster or region) that the channel belongs to is known. This dissertation aims at optimally designing and exploiting quantized CSI to minimize transmit-power under rate and error probability constraints. The setup comprises a wireless communication system with channel-adaptive modulation; where the receiver has available perfect CSI while the transmitter has only quantized CSI. In this context, innovative claims from a high-level vantage point pertain to novel schemes with variable complexity, under different channel types shared by single or multiple users. Simulated numerical tests corroborate the analytical claims and reveal that significant power savings result when implementing the proposed schemes. Specific contributions can be summarized as follows: (i) the quantization and adaptive transmission parameters can be obtained as the solution of a judiciously formulated constrained minimization problem; (ii) the channel quantization algorithms developed attain at least a local optimum of the objective function; (iii)the adaptive schemes reach the global optimum; (iv) the required computational complexity per channel realization for the adaptive schemes ranks from moderate to negligible; (v) the amount of feedback transmitters need from the receiver is stunningly small; and (vi) power consumed by adaptive schemes based on quantized CSI is significantly less than that required by non-adaptive alternatives, and closely approaches the power savings achieved by the benchmark perfect transmit-CSI design. These features encourage practical deployment of the proposed schemes that, with moderate computational overhead, offer a significant performance improvement. URI: http://hdl.handle.net/10016/839 Start Date: 2003-07-01 Titulación: Matrícula de honor (Cum Laude) por unanimidad University: Universidad Carlos III de Madrid Lugar: Escuela Politécnica Superior Teoría del encaminamiento en redes ad-hoc inalámbricasStart Date: 2007-07-01 Titulación: Matrícula de honor (Cum Laude) por unanimidad University: Universidad Carlos III de Madrid Lugar: Escuela Politécnica Superior de Ingeniería de Telecomunicación Statistical learning algorithms applied to the indoor radioStart Date: 2009-06-10 Titulación: Sobresaliente Cum Laude University: Urjc-Departamento de Teoría de la Señal y Comunicaciones, Escuela Superior de Telecomunicaciones Lugar: Fuenlabrada-Madrid |
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| PAPERS | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
International Book Chapters[1] Caamaño A.J., M. P. Sánchez Fernández, Ramos J., García, A, "UMTS Air Interface", Broadband Wireless Mobile: 3G And Beyond, Vol. 1, 1-123, John Wiley and Sons EEUU, 01-01-2002 Papers in International Journals[1] C. Figuera, JL Rojo Álvarez, I. Mora Jiménez, A. Guerrero Curieses, Ramos J., "Time-space Sampling and Mobile Device Calibration for Wifi Indoor Location Systems", IEEE Transactions on Mobile Computing (Accepted) [2] A. G. Marques, Luis M. Lopez-Ramos, G.B. Giannakis, Ramos J., Caamaño A.J., "Optimal Cross-Layer Resource Allocation in Cellular Networks Using Channel and Queue State Information", IEEE Transactions on Vehicular Technology (Sent) [3] Simó-Reigadas J., A. Martínez Fernández, Ramos J., Seoane Pascual, J., "Modeling and optimizing IEEE 802.11 DCF for long-distance links", IEEE Transactions on Mobile Computing, Vol. 9, n. 6, 881 – 896 [4] A. G. Marques, Luis M. Lopez-Ramos, G.B. Giannakis, Ramos J., "Resource Allocation for Interweave and Underlay Cognitive Radios under Probability-of-Interference Constraints", IEEE Journal on Selected Areas in Communications (Sent) [5] C Soguero-Ruiz, L Lechuga-Suárez, I. Mora Jiménez, Ramos J., O. Barquero Pérez, A. García Alberola, JL Rojo Álvarez, "Ontology for Heart Rate Turbulence Domain From The Conceptual Model of SNOMED-CT", IEEE Transactions on Biomedical Engineering (Accepted) [6] A. G. Marques, Ramos J., "Optimizing Orthogonal Multiple Access based on Quantized Channel State Information", IEEE Transactions on Signal Processing, Vol. 59, n. 10, 5023-5038, 01-10-2011 [7] A. G. Marques, A. B. Rodríguez González, JL Rojo Álvarez, J. Requena Carrión, Ramos J., "Optimizing average performance of OFDM systems using limited-rate feedback", IEEE Transactions on Wireless Communications, Vol. 9, n. 10, 3130-3143, 01-10-2010 [8] Morgado, Eduardo, I. Mora Jiménez, Ramos J., Caamaño A.J., "End-to-End Average BER in Multihop Wireless Networks over Fading Channels", IEEE Transactions on Wireless Communications, Vol. 9, n. 8, 2478-2487, 01-08-2010 [9] J. Requena Carrión, J. Väisänen, F. Alonso Atienza, A. García Alberola, Ramos J., JL Rojo Álvarez, "Heart Rate Variability and Phantom Pain in Amputees: application of Linear and Non Linear Methods", Journal of Rehabilitation Research & Development, Vol. 56, n. 12, 2773-2781, 01-12-2009 (Accepted) [10] C. Figuera, I. Mora Jiménez, A. Guerrero Curieses, JL Rojo Álvarez, E. Everss, Ramos J., "Nonparametric Model Comparison and Uncertainty Evaluation for Signal Strength Indoor Location", IEEE Transactions on Mobile Computing, Vol. 8, n. 9, 1250-1264, 01-09-2009 [11] A. Guerrero Curieses, JL Rojo Álvarez, Conde Pardo, P., Alba Castro, JL, Landesa Vázquez I., Ramos J., "On the Performance of Kernel Methods for Skin Color Segmentation ", EURASIP Journal on Advances in Signal Processing , 1-13, 07-05-2009 [12] Sánchez Muñoz JJ, JL Rojo Álvarez, E. Everss, F. Alonso Atienza, Ortiz Patón, M, J Martínez Sánchez, A. García Alberola, M.Valdés, Ramos J., "Spectral Analysis of Intracardiac Electrograms During Induced and Spontaneous Ventricular Fibrillation in Humans", Europace, Vol. 11(3), 328-331, England, 01-03-2009 [13] A. G. Marques, G.B. Giannakis, F.F. Digham, Ramos J., "Power Efficient Wireless OFDMA using Limited-Rate Feedback ", IEEE Transactions. on Wireless Communications, Vol. 7-2, 685-696, 01-02-2008 [14] Ramos J., "Multi-Tier cooperative Broadcasting with Hierarchical Modulations", IEEE Transactions on Wireless Communications , Vol. 6(8), 3047-3057, 01-08-2007 [15] Caamaño A.J., Rafael Boloix Tortosa, Ramos J., Murillo Fuentes,Juan José, "Hybrid Higher Order Statistics Learning In Multiuser Detection", IEEE Transactions on Systems, Man and Cybernetics , Vol. 34, n. 4, 417-424, EEUU, 01-11-2004 Spanish Conferences[1] Fernández-Martínez L., F. Alonso Atienza, C. Figuera, Morgado, Eduardo, Ramos J., Caamaño A.J., "Teoría del Encaminamiento Eficiente en Redes Ad-hoc Inalámbricas", XXII Simposium Nacional de la Unión Científica Internacional de Radio, Tenerife, España, 19-09-2007 [2] A. G. Marques, Morgado, Eduardo, Cano, Alfonso, Caamaño A.J., Ramos J., "Posicionamiento Eficiente de Pilotos para Nuevas Aplicaciones de Sistemas OFDM", Telecom I+D, Madrid, 23-11-2005 [3] Caamaño A.J., Ramos J., Lagar R., A. G. Marques, "Análisis de Sincronismo y Desarrollo de Enrutado Bayesiano sobre Plataforma Física para Redes Zigbee (802.15.4)", Telecom I+D, Madrid, 22-11-2005 [4] A. G. Marques, Morgado, Eduardo, Cano, Alfonso, Caamaño A.J., Ramos J., "Patrones Eficientes de Pilotos en Sistemas OFDM para Canales Inalámbricos Selectivos en Tiempo y Frecuencia", Simposium Nacional de la Unión Científica Internacional de Radio (URSI), Gandía, España, 10-09-2005 International Conferences[1] C Soguero-Ruiz, L Lechuga-Suárez, I. Mora Jiménez, Ramos J., O. Barquero Pérez, A. García Alberola, JL Rojo Álvarez, "Ontology for Heart Rate Turbulence domain applying the conceptual model of SNOMED-CT", Computing in Cardiology, Vol. 39, n. 1, 89 - 92 , Krakow Poland, 12-09-2012 [2] A. G. Marques, G.B. Giannakis, Luis M. Lopez-Ramos, Ramos J., "Stochastic Resource Allocation for Cognitive Radio Networks based on Imperfect State Information", IEEE Proc. of Intl. Conf. on Acoustics, Speech and Signal Processing, Prague, Czech Rep.,, 22-05-2011 [3] A. G. Marques, G.B. Giannakis, Ramos J., "Stochastic Cross-Layer Resource Allocation for Wireless Networks Using Orthogonal Access: Optimality and Delay Analysis", IEEE Proc. of Intl. Conf. on Acoustics, Speech and Signal Processing., Dallas, TX, , 14-03-2010 [4] D. Gutiérrez-Pérez, E. del Arco , Ramiro-Bargueño J., Caamaño A.J., Ramos J., "HEAVEN: A Hybrid Emulating Architecture for Vehicular Networks", International Workshop on Communication Technologies for Vehicles, Saint Petersburg, 14-10-2009 [5] A. G. Marques, G.B. Giannakis, Ramos J., "Stochastic resource allocation for orthogonal access based on quantized CSI: optimality, convergence and delay analysis", IEEE Proc. of Intl. Conf. on Acoustics, Speech and Signal Processing, Taipe, Taiwán, 01-04-2009 [6] A. G. Marques, G.B. Giannakis, Ramos J., "Optimum Scheduling for Orthogonal Multiple Access over Fading Channels using Quantized Channel State Information", IEEE Proc. of Wrksp. on Signal Processing Advances in Wireless Communications. , Recife, Brasil, 01-07-2008 [7] Cano, Alfonso, Morgado, Eduardo, Caamaño A.J., Ramos J., "Distributed Double.Differential Modulation for Cooperative Communications under CFO", IEEE Global Communications Conference 2007, Washington-EEUU, 29-11-2007 [8] A. G. Marques, F.F. Digham, G.B. Giannakis, Ramos J., "Reduced-Complexity Power-Efficient Wireless OFDMA using an Equally Probable CSI Quantizer", IEEE Proc. of Intl. Conf. on Communications, Glasgow, Scotland, 24-06-2007 [9] A. G. Marques, G.B. Giannakis, F.F. Digham, Ramos J., "Minimizing Power in Wireless OFDMA with Limited Rate Feedback ", IEEE Proc. of Wireless and Communications and Networking Conf., Hong Kong, Hong Kong, 11-03-2007 [10] Ramos J., "Multi-Tier Cooperative Broadcasting with Hierarchical Modulations", Proc. of XIV European Sign. Proc. Conf, Florence, Italy, 04-09-2006 [11] Caamaño A.J., I. Mora Jiménez, C. Figuera, Ramos J., "Path Efficiency In Mobile Ad Hoc Networks", 3rd International Symposium on Wireless Systems and Communications, Valencia (España), 01-09-2006 [12] Caamaño A.J., Ramos J., "A Theory of Throughput and Delay in Wireless Mobile Ad Hoc Networks ", Communication Theory Workshop , Dorado, Puerto Rico, 21-05-2006 [13] Caamaño A.J., Ramos J., Morgado, Eduardo, "A Theoretical Analysis Of Routing Protocols in Wireless Sensor Networks", European Workshop on Wireless Sensor Networks, Zurich (Suiza), 13-02-2006 [14] Ramos J., "A Self-Decorrelating. Technique to Enhance Blind Space-Time Rake Receivers with Single-User-Type DS-CDMA Detectors", IEEE International Conference on Communications (ICC 2001), Helsinki, Finland, 01-01-2001 Seminars[1] Ramos J., D. Gutiérrez-Pérez, E. del Arco , Ramiro-Bargueño J., Caamaño A.J., "Comunicaciones Vehiculares a favor de la Autonomía Personal y la Vida Independiente de los Colectivos Vulnerables", III Seminario Fundación Vodafone España-Urjc, Fuenlabrada (Madrid), 23-03-2009 [2] I. Mora Jiménez, Ramos J., Ramiro-Bargueño J., Atero-Gómez FJ., J. Requena Carrión, "Sistemas de Navegación por Satélite", El Programa Europeo, 30-06-2008 Posters in International Conferences[1] E. del Arco , Ramiro-Bargueño J., A. B. Rodríguez González, Ramos J., Caamaño A.J., "Cooperative Wireless Sensing for Characterization of Congested Traffic States", 13th International IEEE Conference on Intelligent Transportation Systems, Vol. 1, n. 1, 1-6, Madeira Island, 19-09-2010 [2] Caamaño A.J., Ramos J., "Throughput Delay Tradeoffs in Large Mobile Wireless Ad-Hoc Networks", IEEE Communication Theory Workshop , San Juan, Puerto Rico, 21-05-2006 [3] Murillo Fuentes,Juan José, González Serrano, FJ, Ramos J., Caamaño A.J., "Natural Gradient Based Blind Multiuser Detection", 13th IEEE International Symposium On Personal, Indoor and Mobile Radio Communication (PIMRC 2002), Vol. 3, 1186 -1189, Lisboa, Portugal, 01-08-2002 [4] Caamaño A.J., Daniel Segovia Vargas, Ramos J., "Blind Adaptive Krylov Subspace Multiuser Detection", IEEE Vehicular Technologies Conference, VTC 2001 Fall, Vol. 4, 2338 -2341, Atlantic City, Usa, 01-01-2001 |
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