Exploració per autor "Pérez Neira, Ana Isabel"
Ara es mostren els items 12-31 de 252
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A novel approach to MISO interference networks under maximum receive-power regulation
Pérez Neira, Ana Isabel; Vázquez Oliver, Miguel Ángel; Lagunas Hernandez, Miguel A. (WSEAS Press, 2018-07-01)
Article
Accés obertAn aggressive frequency reuse is expected within the next years in order to increase the spectral ef¿ciency. Multiuser interference by all in-band transmitters can create a communication bottleneck and, therefore, it is ... -
A robust maximin approach for MIMO communications with imperfect channel state information based on convex optimization
Pascual Iserte, Antonio; Pérez Palomar, Daniel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (2006-01)
Article
Accés obertThis paper considers a wireless communication system with multiple transmit and receive antennas, i.e., a multiple-input-multiple-output (MIMO) channel. The objective is to design the transmitter according to an imperfect ... -
A suboptimal power allocation algorithm for FBMC/OQAM
Caus López, Marius; Pérez Neira, Ana Isabel (2012)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper tackles the sum-rate maximization in FBMC systems. It is well-known that multipath fading destroys the orthogonality of the subcarriers, which brings a non-convex problem that can be interpreted as the ... -
A technique for OFDM symbol slicing
Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2021)
Text en actes de congrés
Accés obertThis work presents an orthonormal transform that splits the Orthogonal Frequency Division Multiplex (OFDM) symbol into slices with ranked rate and decoding complexity. The advantage over the existing carrier or time ... -
A unifying approach to transmit beamforming for the MISO interference channel
Vázquez, Miguel Angel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper addresses the problem of optimal beam- forming in the MISO interference channel. Different approaches are known to obtain the Pareto rate region. In this paper, several frameworks are thoroughly analyzed and ... -
Achievable data rate of coordinated multi-point transmission for visible light communications
Dowhuszko, Alexis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users canachieve when phosphor-converted white LED panels are usedto provide illumination and communication simultaneously. ... -
Adaptive beam pattern selection and resource allocation for NOMA-based LEO satellite systems
Wang, Anyue; Lei, Lei; Hu, Xin; Lagunas Targarona, Eva; Pérez Neira, Ana Isabel; Chatzinotas, Symeon (Institute of Electrical and Electronics Engineers (IEEE), 2022)
Text en actes de congrés
Accés obertThe low earth orbit (LEO) satellite system is one of the promising solutions to provide broadband services to a wide-coverage area for future integrated LEO-6G networks, where users' demands vary with time and geographical ... -
Adaptive generalized space shift keying
Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-02-21)
Article
Accés obertIn this article, we propose a closed-loop precoding method for the Generalized Space Shift Keying (GSSK) modulation scheme, suitable for Multiple-Input-Single-Output (MISO) systems and denoted as adaptive GSSK (AGSSK), ... -
Adaptive generalized space shift keying (GSSK) modulation for MISO channels: a new method for high diversity and coding gains
Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2012)
Text en actes de congrés
Accés obertGeneralized Space Shift Keying (GSSK) modulation is a recently proposed low-complexity concept for Multiple-Input- Multiple-Output (MIMO) wireless systems. GSSK modulation is a generalized version of Space Shift Keying ... -
Advanced interference mitigation techniques for the forward link of multi-beam broadband satellite systems
Devillers, Bertrand; Pérez Neira, Ana Isabel (2011)
Text en actes de congrés
Accés restringit per política de l'editorialHigh throughput satellite systems are expected to rely in the user link on multi-beam architectures with small beam footprints and strong frequency reuse among beams, and will therefore operate in an interference limited ... -
Advanced signal processing techniques for fixed and mobile satellite communications
Henarejos Hernández, Pol; Pérez Neira, Ana Isabel; Mazzali, N.; Mosquera Nartallo, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
Text en actes de congrés
Accés restringit per política de l'editorialEnabling ultra fast systems has been widely investigated during recent decades. Although polarization has been deployed from the beginning in satellite communications, nowadays it is being exploited to increase the throughput ... -
An adaptative fuzzy logic enhancer for rejection of narrowband interference in DS-Spread Spectrum
Pérez Neira, Ana Isabel; Antón Haro, Carles; Lagunas Hernandez, Miguel A. (1998)
Text en actes de congrés
Accés obertThis work develops a novel adaptive fuzzy line enhancer that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference estimation and rejection in direct sequence-spread ... -
An innovative interference mitigation approach for high throughput satellite systems
Caus, Marius; Pérez Neira, Ana Isabel; Angelone, Martina; Ginesi, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper investigates how to boost the forward link capacity in multibeam satellite systems. Since co-channel interference is the main inhibitor to achieve the full potential of frequency reuse, we propose to mitigate ... -
Analog network coding in the multiple access relay channel: error rate analysis and optimal power allocation
Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2015-06-01)
Article
Accés obertIn this paper, we consider Analog Network Coding (ANC) in the Multiple Access Relay Channel (MARC) with multiple relays, and provide the following three-fold contribution: 1) we introduce a tractable mathematical framework ... -
Analysis and evaluation of decentralized multiaccess Mac for ad-hoc networks
Pérez Neira, Ana Isabel; Realp, Marc (2003)
Text en actes de congrés
Accés obertIn mobile ad-hoc radio networks, terminals are mobile and heterogeneous, the architecture of the network is continuously changing, communication links are packet oriented and radio resources are scarce. Therefore, ... -
Analysis of information and power transfer in wireless communications
Caspers, Erick; Ho Yeung, Sai; Sarkar, Tapan K.; Garcia-Lamperez, Alejandro; Salazr, Magdalena; Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel (2013-06)
Article
Accés restringit per política de l'editorialAn analysis of wireless information compared to power transfer over the same channel, consisting of a transmitting and receiving antenna system, is discussed. This frequency-selective additive-white-Gaussian-noise channel ... -
Analysis of orthogonal transmit beamforming using statistical channel information
Xu, Hongji; Liu, Ju; Rubio, Francisco; Pérez Neira, Ana Isabel (2005-12)
Article
Accés restringit per política de l'editorialThe multiple-access interference (MAI) is one of the major factors threatening the performance of multiuser systems. Transmit beamforming is a powerful strategy to increase the system capacity and mitigate interference. ... -
Antenna array configurations for massive MIMO outdoor base stations
Artiga Campos, Xavier; Perruisseau Carrier, Julien; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialMassive MIMO predicts unprecedented capacity and energy efficiency improvements in future networks, by the use of base stations with hundreds of antennas. However the crucial question of determining suitable, or even ... -
Antenna subset selection for spatial modulation: a novel and energy efficient single RF technique
Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper, we propose a closed-loop and single RF multiple-input-multiple-output (MIMO) method, particularly suitable for the Uplink of cellular systems, which is based on the low-complexity and recently devised method ... -
Array antennas for packet transmission networks
Pascual Iserte, Antonio; Ahmed, Nada; Pérez Neira, Ana Isabel (2002)
Text en actes de congrés
Accés obertIn the last two decades, adaptive antennas have been applied widely to wireless communication networks with preexisting infrastructure ,i.e networks with base stations. A wide variety of adaptive algorithms has been ...