Beamforming Techniques for Passive Radar: An Overview

Autor: José M. Núñez-Ortuño, José P. González-Coma, Rubén Nocelo López, Francisco Troncoso-Pastoriza, María Álvarez-Hernández

Publikováno v: Sensors, Vol 23, Iss 7, p 3435 (2023)

Passive radar is an interesting approach in the context of non-cooperative target detection. Because the signal source takes advantage of the so-called illuminator of opportunity (IoO), the deployed system is silent, allowing the operator cheap, port

Externí odkaz: https://doaj.org/article/f3543d0b3b694a729cea8f21178de827

FDD Channel Estimation Via Covariance Estimation in Wideband Massive MIMO Systems

Autor: José P. González-Coma, Pedro Suárez-Casal, Paula M. Castro, Luis Castedo

Publikováno v: Sensors, Vol 20, Iss 3, p 930 (2020)

A method for channel estimation in wideband massive Multiple-Input Multiple-Output systems using hybrid digital analog architectures is developed. The proposed method is useful for Frequency-Division Duplex at either sub-6 GHz or millimeter wave freq

Externí odkaz: https://doaj.org/article/19032fb7cde74b86b7dd8a46b5b4f7d3

Channel Covariance Identification in FDD Massive MIMO Systems

Autor: José P. González-Coma, Pedro Suárez-Casal, Paula M. Castro, Luis Castedo

Publikováno v: Proceedings, Vol 2, Iss 18, p 1176 (2018)

Channel estimation for Massive MIMO systems has drawn a lot of attention in the last years. A number of estimation methods rely on the knowledge of the channel covariance matrix to operate. However, this covariance is not known in practice, and it sh

Externí odkaz: https://doaj.org/article/67bed2222bf5401f9d5c0ca97cae3993

Preparation of synthetic clays to remove phosphates and ibuprofen in water

Autor: Rosa Devesa-Rey, Lorena Gonzalez-Gil, Jorge Feijoo, José P. González-Coma, Jesús del Val, Gonzalo Castiñeira

Publikováno v: Investigo. Repositorio Institucional de la Universidade de Vigo
Universidade de Vigo (UVigo)
Water
Volume 13
Issue 17
Water, Vol 13, Iss 2394, p 2394 (2021)

The main objective of this study consists in the synthesis of a layered double hydroxide (LDH) clay doped with magnesium and aluminum in order to test the removal of phosphates and ibuprofen in water. Two different LDH composites are assessed: oven-d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11f046143b4f9793903d86f8b7c9a03a
https://www.mdpi.com/2073-4441/13/17/2394

Rank Constrained Precoding for the Downlink of mmWave Massive MIMO Hybrid Systems

Autor: Jose P. Gonzalez-Coma, Oscar Fresnedo, Luis Castedo

Publikováno v: IEEE Access, Vol 9, Pp 28459-28470 (2021)

The hybrid design of precoding schemes for millimeter-wave communications allows exploiting the gains by using large antenna array with an affordable hardware cost and power consumption. In this work, we present a novel design strategy based on limit

Externí odkaz: https://doaj.org/article/f96943fde3b24171b7b70285d0824379