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Now showing items 141-150 of 203
Nonorthogonal Multiple Access and Subgrouping for Improved Resource Allocation in Multicast 5G NR
(IEEE, 2022-03-22)
The ever-increasing demand for applications with stringent constraints in device density, latency, user mobility, or peak data rate has led to the appearance of the last generation of mobile networks (i.e., 5G). However, ...
Constellation design for future communication systems: a comprehensive survey
(Institute of Electrical and Electronics Engineers, 2021-06-29)
[EN] The choice of modulation schemes is a fundamental building block of wireless communication
systems. As a key component of physical layer design, they critically impact the expected communication
capacity and wireless ...
Radio Propagation in Terrestrial Broadcasting Television Systems: A Comprehensive Survey
(IEEE-Institute of Electrical and Electronics Engineers, 2021-02-22)
During the last two decades, terrestrial TV broadcasting has evolved from analog to digital technology, permitting a better spectrum efficiency, being more resistant to noise and interference as well as improving signal ...
Predictive CDN Selection for Video Delivery Based on LSTM Network Performance Forecasts and Cost-Effective Trade-Offs
(IEEE-Institute of Electrical and Electronics Engineers, 2021-03)
Owing to increasing consumption of video streams and demand for higher quality content and more advanced displays, future telecommunication networks are expected to outperform current networks in terms of key performance ...
Comparison between Different Channel Coding Techniques for IEEE 802.11be within Factory Automation Scenarios
(MDPI, 2021-10-28)
This paper presents improvements in the physical layer reliability of the IEEE 802.11be standard. Most wireless system proposals do not fulfill the stringent requirements of Factory Automation use cases. The harsh propagation ...
Connecting the dots in trustworthy Artificial Intelligence: From AI principles, ethics, and key requirements to responsible AI systems and regulation
(Elsevier, 2023-11)
Trustworthy Artificial Intelligence (AI) is based on seven technical requirements sustained over three main pillars that should be met throughout the system’s entire life cycle: it should be (1) lawful, (2) ethical, and ...
Sensitivity magnification of an interferometric optical fiber sensor with a length-linked virtual reference
(Elsevier, 2023-12)
Here, it is proposed an alternative to magnify the sensitivity of a single optical fiber interferometric sensor up to two orders of magnitude. The method consists of fabricating the sensing interferometer with a specific ...
Channel phase processing in wireless networks for human activity recognition
(Elsevier, 2023-12)
The phase of the channel state information (CSI) is underutilized as a source of information in wireless sensing due to its sensitivity to synchronization errors of the signal reception. A linear transformation of the phase ...
Empirical Doppler Characterization of Signals Scattered by Wind Turbines in the UHF Band under Near Field Condition
(Hindawi Publishing Corporation, 2013)
Time variability of the scattering signals from wind turbines may lead to degradation problems on the communication systems provided in the UHF band, especially under near field condition. In order to analyze the variability ...
Simplified Formulae for the Estimation of Offshore Wind Turbines Clutter on Marine Radars
(Hindawi Publishing, 2014)
The potential impact that offshore wind farms may cause on nearby marine radars should be considered before the wind farm is installed. Strong radar echoes from the turbines may degrade radars' detection capability in the ...