Results 11 to 20 of about 1,024,528 (268)

Structured channel covariance estimation from limited samples for large antenna arrays

open access: yesEURASIP Journal on Wireless Communications and Networking, 2023
In massive multiuser multiple antenna systems, the knowledge of the users’ channel covariance matrix is crucial for minimum mean square error channel estimation in the uplink and it plays an important role in several multiuser beamforming schemes in the ...
Tianyu Yang   +3 more
doaj   +1 more source

Extended IMD2020: a large‐scale annotated dataset tailored for detecting manipulated images

open access: yesIET Biometrics, 2021
Image forensic datasets need to accommodate a complex diversity of systematic noise and intrinsic image artefacts to prevent any overfitting of learning methods to a small set of camera types or manipulation techniques.
Adam Novozámský   +2 more
doaj   +1 more source

Fundamental and speculative components of the cryptocurrency pricing dynamics

open access: yesFinancial Innovation, 2023
The driving forces behind cryptoassets’ price dynamics are often perceived as being dominated by speculative factors and inherent bubble-bust episodes. Fundamental components are believed to have a weak, if any, role in the price-formation process.
Jiri Kukacka, Ladislav Kristoufek
doaj   +1 more source

Impact of Liquid Crystal Based Interference Mitigation and Precoding on the Multiuser Performance of VLC Massive MIMO Arrays

open access: yesIEEE Photonics Journal, 2022
In visible light communication systems, the ability to suppress interference caused by other light sources is a major benefit towards performance improvements.
Adrian Krohn   +4 more
doaj   +1 more source

Constructor theory of information [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2015
We propose a theory of information expressed solely in terms of which transformations of physical systems are possible and which are impossible—i.e. in constructor-theoretic terms. It includes conjectured, exact laws of physics expressing the regularities that allow information to be physically instantiated. Although these laws are
Deutsch, David, Marletto, Chiara
openaire   +3 more sources

Dataset for file fragment classification of image file formats

open access: yesBMC Research Notes, 2019
Objectives File fragment classification of image file formats is a topic of interest in network forensics. There are a few publicly available datasets of files with image formats.
Reyhane Fakouri, Mehdi Teimouri
doaj   +1 more source

Energy Scheduling for a DER and EV Charging Station Connected Microgrid With Energy Storage

open access: yesIEEE Access, 2023
Microgrids are an effective solution to decentralize electrical grids and improve usage of distributed energy resources (DERs). Within a microgrid there are multiple active players and it can be computationally expensive to consider all their ...
Kiraseya Preusser, Anke Schmeink
doaj   +1 more source

Bayesian inverse modeling and source location of an unintended 131I release in Europe in the fall of 2011 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
In the fall of 2011, iodine-131 (131I) was detected at several radionuclide monitoring stations in central Europe. After investigation, the International Atomic Energy Agency (IAEA) was informed by Hungarian authorities that 131I was released from the
O. Tichý   +5 more
doaj   +1 more source

An Optimality Summary: Secret Key Agreement with Physical Unclonable Functions

open access: yesEntropy, 2020
We address security and privacy problems for digital devices and biometrics from an information-theoretic optimality perspective to conduct authentication, message encryption/decryption, identification or secure and private computations by using a secret
Onur Günlü, Rafael F. Schaefer
doaj   +1 more source

LS-APC v1.0: a tuning-free method for the linear inverse problem and its application to source-term determination [PDF]

open access: yesGeoscientific Model Development, 2016
Estimation of pollutant releases into the atmosphere is an important problem in the environmental sciences. It is typically formalized as an inverse problem using a linear model that can explain observable quantities (e.g., concentrations or ...
O. Tichý   +3 more
doaj   +1 more source

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