Exploració per autor "Pérez Neira, Ana Isabel"
Ara es mostren els items 38-57 de 252
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Candidate spectral estimation for cognitive radio
(2007)
Text en actes de congrés
Accés obertIntroducing a different view point of traditional filter bank approach for spectral estimation it is derived a spectral estimation method able to detect a given spectral shape forming part or contributing to a given data ... -
Capacity analysis of index modulations over spatial, polarization and frequency dimensions
(2017-08-23)
Article
Accés obertIEEE Determining the capacity of a modulation scheme is a fundamental topic of interest. Index Modulations (IM), such as Spatial Modulation (SMod), Polarized Modulation (PMod) or Frequency Index Modulation (FMod), are ... -
Capacity analysis of WCC-FBMC/OQAM systems
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper evaluates the capacity of weighted circularly convolved FBMC/OQAM systems. A rigorous mathematical model is derived to calculate the increase of capacity that can be obtained thanks to the lattice structure of ... -
Cellular internet service: advanced front-end for FDSS
(1999)
Text en actes de congrés
Accés obert -
Centralized vs distributed resource allocation in multi cell OFDMA systems
(2011)
Text en actes de congrés
Accés restringit per política de l'editorialRadio Resource Management with Inter-cell Interference Coordination (ICIC), is a key issue under investigation for next generation wireless systems such as Long Term Evolution (LTE). Although centralized resource allocation ... -
Challenges in open spectrum systems
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialAuthorised Shared Access/Licensed Shared Access (ASA/LSA) are a key enabler for an efficient use of the available spectrum in 5G and beyond networks, which will become absolutely compulsory in order to cope with the ... -
Channel dependent mutual information in index modulations
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialMutual Information is the metric that is used to perform link adaptation, which allows to achieve rates near capacity. The computation of adaptive transmission modes is achieved by employing the mapping between the Signal ... -
Channel norm-bases user scheduling in coordinated multi-point systems
(2009)
Text en actes de congrés
Accés obertIn this paper, we address the problem of user scheduling in downlink coordinated multi-point transmission (CoMP) systems, where multiple users are selected and then served with zero forcing beamformer simultaneously by ... -
Characterization of the effects of multi-tap filtering on FBMC/OQAM systems
(HINDAWI, 2014-06-05)
Article
Accés obertThe filter bank multicarrier modulation based on offset quadrature amplitude modulation (FBMC/OQAM) is being considered as an eligible technology for future wireless communications. However, the orthogonality may be destroyed ... -
Closed form expressions for maximum delay and jitter in multibeam opportunistic beamforming
(2007)
Text en actes de congrés
Accés obertScheduling in a broadcast (BC) channel based on partial channel state information at the transmitter (CSIT) is carried out through a multibeam opportunistic beamforming technique. Within a more practical perspective, this ... -
Closed-form multicast precoding for satellite flexible payloads
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertThis paper investigates a novel closed-form noniterative precoding technique for multicast multibeam satellite systems. Next-generation satellite systems will be benefited from the flexible use of the satellite resources ... -
Closed-loop spatial modulation with antenna selection
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialThe closed-loop scheme of spatial modulation (SM), which feeds back the selected transmit antenna subsets to the transmitter, is presented to overcome the constraint in SM that the number of transmit antennas has to be a ... -
Co-channel interference cancelation at the user terminal in multibeam satellite systems
(2017-01-01)
Article
Accés obertWe study the applicability of soft interference cancelation in the forward link of multibeam satellite systems with focus on mobile terminals. We adopt a standard currently used in commercial satellite systems as a ... -
Co-channel interference cancellation at the user terminal in multibeam satellite systems
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés obertWe study the applicability of soft interference cancellation in the forward link of commercial multibeam satellite systems with focus on mobile terminals. We adopt a standard currently used in commercial satellite systems ... -
Comparison of linear and widely linear processing in MIMO-FBMC systems
(VDE Conference Publications, 2013)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper carries out a comparison between two multi-stream techniques aimed for filter bank multicarrier (FBMC) systems based on the offset quadrature amplitude modulation (OQAM). The first option performs linear processing ... -
Confidential communication in downlink beamforming
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper deals with the problem of secure transmission in downlinkbeamforming. In this scenario, a base station, which usually serves information to an amount of users, wants to transmit a confidential message to one ... -
Cooperation on demand protocols for wireless networks
(Institute of Electrical and Electronics Engineers (IEEE), 2007-05-31)
Comunicació de congrés
Accés restringit per política de l'editorialWe consider a cooperative network where the communication between a single source-destination pair is assisted by the transmission of relays. In the considered cooperative model, once a node requires cooperation, it ... -
Cooperative communications: from theory to experimental implementation
(2012)
Text en actes de congrés
Accés restringit per política de l'editorialOver the last years, cooperative communications have been studied from both fundamental and practical points of view. However, most of the existing studies of cooperative communications rely on math or computer simulation. ... -
Cooperative dual Leo satellite transmission in multi-user OTFS systems
(Institute of Electrical and Electronics Engineers (IEEE), 2023)
Text en actes de congrés
Accés obertThis paper explores multi-satellite transmission schemes. The focus is on the multi-user downlink scenario, where two low Earth orbit satellites transmit data cooperatively, which are then combined at each of the ground ... -
Cooperative transmission scheme to address random orientation and blockage events in VLC systems
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Text en actes de congrés
Accés obertVisible light communication (VLC) is a promising communication technology that paves the way to the Internet of Things. The forthcoming Industry 4.0 requires reliable high-speed communication links, which can be easily ...
