Search Results - "Fresnedo, Óscar"

Coded Aperture Hyperspectral Image Reconstruction by García-Sánchez, Ignacio, Fresnedo, Óscar, González-Coma, José P., Castedo, Luis

“…In this work, we study and analyze the reconstruction of hyperspectral images that are sampled with a CASSI device. The sensing procedure was modeled with the…”
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JSCC-Cast: A Joint Source Channel Coding Video Encoding and Transmission System with Limited Digital Metadata by Balsa, Jose, Fresnedo, Óscar, García-Naya, José A., Domínguez-Bolaño, Tomás, Castedo, Luis

“…This work considers the design and practical implementation of JSCC-Cast, a comprehensive analog video encoding and transmission system requiring a reduced…”
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Analog Transmission of Correlated Sources Over BC With Distortion Balancing by Suárez-Casal, Pedro, Fresnedo, Óscar, Castedo, Luis, García-Frías, Javier

“…Analog transmission of correlated information over Gaussian broadcast channels (BCs) using analog joint source- channel coding (JSCC) is addressed. This…”
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Transmission of Still Images Using Low-Complexity Analog Joint Source-Channel Coding by Balsa, Jose, Domínguez-Bolaño, Tomás, Fresnedo, Óscar, García-Naya, José A, Castedo, Luis

“…An analog joint source-channel coding (JSCC) system designed for the transmission of still images is proposed and its performance is compared to that of two…”
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Educational graphic tool for teaching fundamentals of digital image representation by Fresnedo, Óscar, Laport, Francisco, Castro, Paula M., Dapena, Adriana

“…In the last few decades, different teaching methodologies have been proposed to promote more active learning of students. However, it is still essential to…”
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Deep Contextual Bandit and Reinforcement Learning for IRS-Assisted MU-MIMO Systems by Pereira-Ruisanchez, Dariel, Fresnedo, Oscar, Perez-Adan, Darian, Castedo, Luis

“…The combination of multiple-input multiple-output (MIMO) systems and intelligent reflecting surfaces (IRSs) is foreseen as a critical enabler of beyond 5G…”
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DRL-Based Sequential Scheduling for IRS-Assisted MIMO Communications by Pereira-Ruisanchez, Dariel, Fresnedo, Oscar, Perez-Adan, Darian, Castedo, Luis

“…Efficient resource allocation strategies are pivotal in vehicular communications as connected devices steeply increase in scenarios with much more stringent…”
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A Rank-Constrained Coordinate Ascent Approach to Hybrid Precoding for the Downlink of Wideband Massive (MIMO) Systems by González-Coma, José P., Fresnedo, Óscar, Castedo, Luis

“…An innovative approach to hybrid analog-digital precoding for the downlink of wideband massive MIMO systems is developed. The proposed solution, termed…”
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Alternating Minimization for Wideband Multiuser IRS-Aided MIMO Systems Under Imperfect CSI by Perez-Adan, Darian, Joham, Michael, Fresnedo, Oscar, Gonzalez-Coma, Jose P., Castedo, Luis, Utschick, Wolfgang

“…This work focuses on wideband intelligent reflecting surface (IRS)-aided multiuser MIMO systems. One of the major challenges of this scenario is the joint…”
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Lattice-Based Analog Mappings for Low Latency Wireless Sensor Networks by Suarez-Casal, Pedro, Fresnedo, Oscar, Perez-Adan, Darian, Castedo, Luis

“…We consider the transmission of spatially correlated analog information in a WSN through fading SIMO MAC with low latency requirements. A lattice-based analog…”
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Wideband User Grouping for Uplink Multiuser mmWave MIMO Systems With Hybrid Combining by Perez-Adan, Darian, Fresnedo, Oscar, Gonzalez-Coma, Jose P., Castedo, Luis

“…Analog-digital hybrid precoding and combining schemes constitute an interesting approach to millimeter-wave (mmWave) multiple-input multiple-output (MIMO)…”
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Rank Constrained Precoding for the Downlink of mmWave Massive MIMO Hybrid Systems by Gonzalez-Coma, Jose P., Fresnedo, Oscar, Castedo, Luis

“…The hybrid design of precoding schemes for millimeter-wave communications allows exploiting the gains by using large antenna array with an affordable hardware…”
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A Robust DCB Approach to IRS-Assisted Vehicular Communications with ICSI by Pereira-Ruisanchez, Dariel, Fresnedo, Oscar, Perez-Adan, Darian, Castedo, Luis

“…The deployment of intelligent reflecting surfaces (IRSs) to assist multiple-input multiple-output (MIMO) communications stands as a promising step in…”
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Transmission of Analog Information Over the Multiple Access Relay Channel Using Zero-Delay Non-Linear Mappings by Fresnedo, Oscar, Suarez-Casal, Pedro, Castedo, Luis

“…We consider the zero-delay encoding of discrete-time analog information over the Multiple Access Relay Channel (MARC) using non-linear mapping functions. On…”
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Estimation of Laplacian Symbols for Analog Transmission Over MIMO Channels by Suarez-Casal, Pedro, Fresnedo, Oscar, Castedo, Luis

“…The MAP and MMSE estimation of Laplace-distributed symbols transmitted over multiple-input multiple-output channels is studied. This is an important problem in…”
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User Grouping for the Uplink of Multiuser Hybrid mmWave MIMO by Perez-Adan, Darian, Fresnedo, Oscar, Gonzalez-Coma, Jose P., Castedo, Luis

“…Hybrid analog/digital schemes for precoding/combining have proved to be a low-complexity and/or low-power strategy to obtain reasonable beamforming gains in…”
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Eye State Identification Based on Discrete Wavelet Transforms by Laport, Francisco, Castro, Paula M., Dapena, Adriana, Vazquez-Araujo, Francisco J., Fresnedo, Oscar

“…We present a prototype to identify eye states from electroencephalography signals captured from one or two channels. The hardware is based on the integration…”
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Analog Video Encoding and Quality Evaluation by Jose Balsa, Óscar Fresnedo, José A. García-Naya, Tomás Domínguez-Bolaño, Luis Castedo

“…The most widespread analog video encoding systems in the literature are based on the use of the 2D and 3D DCT. These systems use both transformations…”
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Image Transmission: Analog or Digital? by Jose Balsa, Tomás Domínguez-Bolano, Óscar Fresnedo, José A. García-Naya, Luis Castedo

“…Evaluation and comparison of analog and digital wireless transmission systems…”
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Transmission of Spatio-Temporal Correlated Sources Over Fading Multiple Access Channels With DQLC Mappings by Fresnedo, Oscar, Suarez-Casal, Pedro, Castedo, Luis

“…The design of zero-delay Joint Source-Channel Coding (JSCC) schemes for the transmission of correlated information over fading Multiple Access Channels (MACs)…”
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