Exploració per autor "Rey Micolau, Francesc"
Ara es mostren els items 1-20 de 53
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A rain and scintillation Ka-band channel simulator
Rodríguez, E; Sala Álvarez, José; Lamarca Orozco, M. Meritxell; López, J. A.; Rey Micolau, Francesc; Riba Sagarra, Jaume; Vázquez Grau, Gregorio; Villares Piera, Nemesio Javier; Jalón, A (ESA, 2008)
Text en actes de congrés
Accés obertThis paper describes the implementation of a Ka-band satellite channel simulator with emphasis on the synthesis of scintillation processes. The problem becomes one of generating a given probability density function, ... -
ADC Quantization Requirements
Riba Sagarra, Jaume; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio Javier (2000-06)
Report de recerca
Accés obertIn this document, we analyze the impact of the quantization at the input of the demultiplexer. The required number of bits of the Analog-to-Digital-Converter (ADC) is obtained, along with the corresponding quantization losses. -
ANTARES Project (Bridging Phase). Payload carrier synchronization : algorithms and simulations
Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio Javier (2011-11-23)
Report de recerca
Accés restringit per acord de confidencialitatInforme final Bridging Phase. Versió 3.2 -
ANTARES Project (Phase B). Multiple acces scheme definition. Diverse trade-offs analysis for TDMA and CDMA
Villares Piera, Nemesio Javier; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio (2010-03-01)
Report de recerca
Accés restringit per acord de confidencialitat -
ANTARES Project (Phase B). Multiple acces scheme definition. Spectral efficiency analysis of the MAC techniques considered for the Antares forward and return links
Villares Piera, Nemesio Javier; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio (2010-07-01)
Report de recerca
Accés restringit per acord de confidencialitat -
ANTARES Project (Phase B). Multiple acces scheme definition. Successive interference cancellation for A-CDMA
Villares Piera, Nemesio Javier; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio (2010-05-01)
Report de recerca
Accés restringit per acord de confidencialitat -
ANTARES Project (Phase B). Multiple access scheme definition. Impact of the aeronautical channel on the MAC techniques considered for the Antares forward and return links
Villares Piera, Nemesio Javier; Font Segura, Josep; Lamarca Orozco, M. Meritxell; Matas Navarro, David; Ramírez Javega, Francisco; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio (2010-03-01)
Report de recerca
Accés restringit per acord de confidencialitat -
ANTARES Project (Phase B). Physical layer definition. Equalization detailed design
Villares Piera, Nemesio Javier; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio (2010-08-01)
Report de recerca
Accés restringit per acord de confidencialitat -
ANTARES Project (Phase B). Physical layer definition. Payload carrier synchronization for the Antares TDMA return link
Villares Piera, Nemesio Javier; Font Segura, Josep; Matas Navarro, David; Ramírez Javega, Francisco; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio (2010-08-01)
Report de recerca
Accés restringit per acord de confidencialitat -
Asymptotic and finite user PER analysis of successive interference cancellation in DS-CDMA
Sala Álvarez, José; Villares Piera, Nemesio Javier; Rey Micolau, Francesc (2011-11)
Article
Accés obertAn expression is derived for the average Packet Error Rate (PER) of a Successive Interference Canceller (SIC) for DS-CDMA when the number of users asymptotically tends to infinity. The asymptotic probability density function ... -
Asymptotically optimum energy profile for successive interference cancellation in DS-CDMA under a power unbalance constraint
Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier (2012-02)
Article
Accés obertA new Ordinary Differential Equation (ODE) governing the SNIR evolution of a Successive Interference Canceller (SIC) for DS-CDMA is derived when the number of users tends to infinity and all users share the same channel ... -
Blind equalization based on spatial and temporal diversity in block coded modulations
Rey Micolau, Francesc; Lamarca Orozco, M. Meritxell; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1998)
Text en actes de congrés
Accés obertLinear block codes can be applied in spatial and/or temporal diversity receivers in order to develop high performance schemes for blind equalization in mobile communications. The proposed technique uses the structure of ... -
Blind equalization of DS-CDMA and MC-CDMA modulations in time-variant frequency selective channels
Rey Micolau, Francesc; Vázquez Grau, Gregorio (Institute of Electrical and Electronics Engineers (IEEE), 1999)
Text en actes de congrés
Accés obertThe paper addresses the blind equalization problem of spread spectrum modulations in the presence of fast time-variant frequency-selective channels. The basic assumption of the paper is that the channel response exhibits ... -
Búsqueda de la calidad en acción humanitaria. El papel de la tecnología.
Rey Micolau, Francesc (2007-06-29)
Article
Accés obertEl sector humanitario, sobre todo en la vertiente de emergencias, se mueve entre la apariencia de ser el que más ha incorporado el uso de tecnologías en el ámbito de la cooperación, y la realidad más habitual de moverse ... -
Channel-aware energy allocation for throughput maximization in massive low-rate multiple access
Molina Oliveras, Francesc; Sala Álvarez, José; Rey Micolau, Francesc; Villares Piera, Nemesio Javier (Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés obertA multiple access (MA) optimization technique for massive low-rate direct-sequence spread spectrum communications is analyzed in this work. A dense network of users transmitting at the same rate to a common central node ... -
Correlation study between the access mark and the performance in project-based and standard courses
Bragós Bardia, Ramon; Aoun, Louay; Charosky Larrieu-Let, Guido; Bermejo Broto, Sandra; Rey Micolau, Francesc; Pegueroles Vallés, Josep R. (Universitat Politècnica de Catalunya, 2022-09)
Text en actes de congrés
Accés obertThe access mark to engineering studies is often used as an a priori success estimator. In our institution, we have observed that the correlation of the access mark with the grades obtained in project-based courses (R=0.52) ... -
Correlation study between the performance in different engineering courses and project-based courses
Bermejo Broto, Sandra; Bragós Bardia, Ramon; Rey Micolau, Francesc; Pegueroles Vallés, Josep R. (NTNU SEED, 2023)
Comunicació de congrés
Accés obertIn a previous study, already published (Bragós, 2022), we analyzed the correlation between the University access mark to the engineering studies with the grades obtained in projectbased courses and in non-project-based ... -
D1. Estudio de códigos PN para mejorar el ensanchado y la eficiencia espectral del sistema CDMA síncrono y asíncrono
Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio Javier (2008-11-10)
Report de recerca
Accés restringit per acord de confidencialitat -
D2. Estructuras de detector multiusuario para CDMA síncrono y asíncrono
Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio Javier (2008-11-10)
Report de recerca
Accés restringit per acord de confidencialitat -
D3. Sincronización robusta de frecuencia y fase para M-PSK sobre CDMA
Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Riba Sagarra, Jaume; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio Javier (2008-11-10)
Report de recerca
Accés restringit per acord de confidencialitat