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Neural network aided computation of mutual information for adaptation of spatial modulation
(2020-05-01)
Article
Open AccessIndex Modulations, in the form of Spatial Modulation or Polarized Modulation, are gaining traction for both satellite and terrestrial next generation communication systems. Adaptive Spatial Modulation based links are needed ... -
A novel dissemination protocol to deploy opportunistic services in federated satellite systems
(Institute of Electrical and Electronics Engineers (IEEE), 2020-08-03)
Article
Open AccessThe Earth Observation community is demanding new satellite applications that cover the need of monitoring different areas with high spatial resolution and short revisit times. These applications will generate huge amounts ... -
Terahertz frequency-scaled differential imaging for Sub-6 GHz vehicular antenna signature analysis
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-10-02)
Article
Open AccessThe next generation of connected and autonomous vehicles will be equipped with high numbers of antennas operating in a wide frequency range for communications and environment sensing. The study of 3D spatial angular responses ... -
Applying cognitive dynamic learning strategies for margins reduction in operational optical networks
(2020-09-01)
Article
Restricted access - publisher's policyToday's optical transport networks are complex already and the support of the new arising services will further increase such complexity. Traditional deterministic network procedures will need to be revisited, especially ... -
Single-pass soil moisture retrievals using GNSS-R: lessons learned
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-06-01)
Article
Open AccessIn this paper, an algorithm to retrieve surface soil moisture from GNSS-R (Global Navigaton Satellite System Reflectometry) observations is presented. Surface roughness and vegetation effects are found to be the most ... -
Economic forecasting with evolved confidence indicators
(2020-12-01)
Article
Restricted access - publisher's policyWe present a machine-learning method for sentiment indicators construction that allows an automated variable selection procedure. By means of genetic programming, we generate country-specific business and consumer confidence ... -
Time series features and machine learning forecasts
(2020-09-16)
Article
Restricted access - publisher's policyIn this study we combine the results of two independent analyses to position Spanish regions according to both the characteristics of the time series of international tourist arrivals and the accuracy of predictions of ... -
Super-resolution of Sensinel-2 imagery using generative adversarial networks
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-07-28)
Article
Open AccessSentinel-2 satellites provide multi-spectral optical remote sensing images with four bands at 10 m of spatial resolution. These images, due to the open data distribution policy, are becoming an important resource for several ... -
Implementation of a testbed for GNSS-R payload performance evaluation
(Institute of Electrical and Electronics Engineers (IEEE), 2020-05-28)
Article
Open AccessThe functional performance of space-borne instruments must be validated on ground before and after satellite integration. The effects of radio-frequency interference are also becoming more important, even in protected bands ... -
SMOS third mission reprocessing after 10 years in orbit
(Multidisciplinary Digital Publishing Institute (MDPI), 2020-05-01)
Article
Open AccessAfter more than 10 years in orbit, the SMOS team has started a new reprocessing campaign for the SMOS measurements, which includes the changes in calibration and image reconstruction that have been made to the Level 1 ... -
3D-printed UHF-RFID tag for embedded applications
(Institute of Electrical and Electronics Engineers (IEEE), 2020-08-10)
Article
Open AccessThis paper presents the design, manufacture and characterization of a novel 3D passive UHF-RFID tag for embedded applications. The prototype is fabricated using additive manufacturing techniques: 3D printing and copper ... -
High-efficiency reconfigurable dual-band class-F power amplifier with harmonic control network using MEMS
(2020-07-01)
Article
Open AccessThis letter presents a novel reconfigurable, high-efficiency class-F power amplifier (PA) structure, using a commercial GaN-HEMT, that achieves dual-band configuration not only at the fundamental frequency but also at the ...
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