Results 21 to 30 of about 250,034 (263)

Atomistic Characterization of Gramicidin Channel Formation [PDF]

open access: yesJournal of Chemical Theory and Computation, 2020
We investigated gramicidin A (gA) subunit dimerization in lipid bilayers using microsecond-long replica-exchange umbrella sampling simulations, millisecond-long unbiased molecular dynamics simulations, and machine learning. Our simulations led to a dimer structure that is indistinguishable from the experimentally determined gA channel structures, with ...
Delin Sun   +6 more
openaire   +2 more sources

Unmanned Aerial Vehicle Propagation Channel over Vegetation and Lake Areas: First- and Second-Order Statistical Analysis

open access: yesSensors, 2021
The use of unmanned aerial vehicles (UAV) to provide services such as the Internet, goods delivery, and air taxis has become a reality in recent years.
Deyvid L. Leite   +4 more
doaj   +1 more source

Characterization of multi-channel interference

open access: yes2008 6th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks and Workshops, 2008
Multi-channel communication protocols in wireless networks usually assume perfect orthogonality between wireless channels or consider only the use of interference-free channels. The first approach may overestimate the performance whereas the second approach may fail to utilize the spectrum efficiently.
Durmaz, O., Jansen, P.G.
openaire   +2 more sources

THz Channel Sounding and Modeling Techniques: An Overview

open access: yesIEEE Access, 2023
As the world warms up to the idea of millimeter wave (mmWave) communication and fifth generation (5G) mobile networks, realization slowly dawns that the data rate, latency, throughput, and other performance metrics that are used to assess a new wireless ...
Anirban Ghosh, Minseok Kim
doaj   +1 more source

A non-destructive channel stress characterization for gate-all-around nanosheet transistors by confocal Raman methodology

open access: yesNational Science Open, 2022
Non-destructive stress characterization is essential for gate-all-around (GAA) nanosheet (NS) transistors technology, while it is a big challenge to be realized on nanometer-sized GAA devices by using traditional Micro-Raman spectroscopy due to its light
Huang Ziqiang   +10 more
doaj   +1 more source

A Comprehensive Survey on UAV Communication Channel Modeling

open access: yesIEEE Access, 2019
Unmanned aerial vehicles (UAVs) have stroke great interested both by the academic community and the industrial community due to their diverse military applications and civilian applications.
Chaoxing Yan   +3 more
doaj   +1 more source

A Characterization of Antidegradable Qubit Channels

open access: yesCoRR, 2017
This paper provides a characterization for the set of antidegradable qubit channels. The characterization arises from the correspondence between the antidegradability of a channel and the symmetric extendibility of its Choi operator. Using an inequality derived to describe the set of bipartite qubit states which admit symmetric extension, we are able ...
Connor Paddock, Jianxin Chen
openaire   +2 more sources

An Information-Theoretic Characterization of Channels That Die [PDF]

open access: yesIEEE Transactions on Information Theory, 2012
Given the possibility of communication systems failing catastrophically, we investigate limits to communicating over channels that fail at random times. These channels are finite-state semi-Markov channels. We show that communication with arbitrarily small probability of error is not possible. Making use of results in finite blocklength channel coding,
Lav R. Varshney   +2 more
openaire   +1 more source

Railway Wireless Communications Channel Characterization

open access: yesApplied Sciences, 2021
Railway applications are in continuous evolution with the aim of offering a more efficient, sustainable, and safer transportation system for the users.
Nerea Fernández-Berrueta   +4 more
doaj   +1 more source

An Indistinguishability-Based Characterization of Anonymous Channels [PDF]

open access: yes, 2008
We revisit the problem of anonymous communication, in which users wish to send messages to each other without revealing their identities. We propose a novel framework to organize and compare anonymity definitions. In this framework, we present simple and practical definitions for anonymous channels in the context of computational indistinguishability ...
Alejandro Hevia, Daniele Micciancio
openaire   +3 more sources

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