Browsing by Author "Pérez Neira, Ana Isabel"
Now showing items 1-20 of 253
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1. Inauguració
(2012-10-23)
Audiovisual
Open Access -
3D polarized modulation: system analysis and performance
(2018-06-26)
Article
Open AccessIn this paper we present a novel modulation technique for dual polarization communication systems, which reduces the error rate compared with the existent schemes. This modulation places the symbols in a 3D constellation, ... -
A cross-layer scheduling strategy for the downlink of a MIMO-OFDMA system with heterogeneous traffic
(2009)
Conference report
Open Accessin this paper we propose and investigate a cross-layer multiuser scheduling strategy for the support of heterogeneous traffic in the downlink of a MIMO-OFDMA system. It jointly considers different objectives: maximize ... -
A discrete bit loading algorithm for FBMC/OQAM
(2012-06)
Article
Restricted access - publisher's policyIn this letter the discrete rate maximization problem is investigated for FBMC/OQAM. The analysis reveals that if there is crosstalk certain bit allocations violate the power constraints. Aiming at ensuring the feasibility ... -
A dynamic non-singleton fuzzy logic system for DS/CDMA communications
(Institute of Electrical and Electronics Engineers (IEEE), 1998)
Conference report
Open AccessWe investigate a dynamic fuzzy logic system, specifically, its non-singleton generalization, and derive a novel adaptive fuzzy line enhancer that successfully solves the non-linear problem of narrowband interference (NBI) ... -
A fuzzy logic filter for coherent detection in mobile communication receivers
(1998)
Conference report
Open AccessThis paper proposes and demonstrates the use of a fuzzy logic filter for carrier phase synchronization in digital mobile communication receivers. The use of a priori knowledge of the dynamics of the phase in mobile fading ... -
A low-complexity method for antenna selection in spatial modulation systems
(2013-11-13)
Article
Restricted access - publisher's policyIn this Letter, a low-complexity Euclidean distancebased method for antenna subset selection in Spatial Modulation systems is presented. The proposed method avoids the high complexity of both the optimal exhaustive ... -
A margin adaptive scheduling algorithm for FBMC/OQAM systems
(2014)
Conference report
Restricted access - publisher's policyThis paper addresses the margin adaptive problem for the filter bank multicarrier (FBMC) modulation based on the offset QAM (OQAM), referred to as FBMC/OQAM. The analysis conducted in this paper reveals that due to the ... -
A maximum approach for robust MIMO design: combining OSTBC and beamforming with minimum transmission power requirements
(2004)
Conference report
Open AccessIn this paper we address the problem of the design of a transmitter in a Multi-Input-Multi-Output (MIMO) space diversity system. We consider a design which is robust to errors in the channel estimate available at the ... -
A new approach to exploit channel power imbalance in distributed antenna systems with fiber fronthaul
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyCloud Modulation (CM) is a novel transmission method that mitigates the non-linear impairments introduced by the Radio-over-Fiber (RoF) links of a distributed antenna system. In CM, constant-envelope phase-modulated radio ... -
A new non-linear system for estimating and suppressing narrowband interference in PN spread spectrum modulation
(1998)
Conference report
Open AccessThis work develops a novel dynamic fuzzy logic system that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference prediction and rejection in DS-SS. A fuzzy basis ... -
A novel approach to MISO interference networks under maximum receive-power regulation
(WSEAS Press, 2018-07-01)
Article
Open AccessAn 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
(2006-01)
Article
Open AccessThis 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
(2012)
Conference lecture
Restricted access - publisher's policyThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Open AccessThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Conference report
Restricted access - publisher's policyThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2017)
Conference report
Restricted access - publisher's policyThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Conference report
Open AccessThe 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
(2013-02-21)
Article
Open AccessIn 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
(2012)
Conference report
Open AccessGeneralized 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 ...
