Results 21 to 30 of about 854,677 (295)

Characterization of Geometry and Surface Texture of AlSi10Mg Laser Powder Bed Fusion Channels Using X-ray Computed Tomography

open access: yesApplied Sciences, 2021
Channels manufactured by laser powder bed fusion have an inherent process-induced dross formation and surface texture that require proper characterization for design and process optimization.
Christopher G. Klingaa   +4 more
doaj   +1 more source

Quantum Capacities of Bosonic Channels [PDF]

open access: yes, 2006
We investigate the capacity of bosonic quantum channels for the transmission of quantum information. Achievable rates are determined from measurable moments of the channel by showing that every channel can asymptotically simulate a Gaussian channel which
A. S. Holevo   +5 more
core   +2 more sources

General formulas for capacity of classical-quantum channels [PDF]

open access: yes, 2002
The capacity of a classical-quantum channel (or in other words the classical capacity of a quantum channel) is considered in the most general setting, where no structural assumptions such as the stationary memoryless property are made on a channel.
Hayashi, Masahito, Nagaoka, Hiroshi
core   +6 more sources

A refined analysis of the Poisson channel in the high-photon-efficiency regime [PDF]

open access: yes, 2014
We study the discrete-time Poisson channel under the constraint that its average input power (in photons per channel use) must not exceed some constant E.
Wang, Ligong, Wornell, Gregory W.
core   +2 more sources

Terahertz wave propagation and channel characterization

open access: yesTongxin xuebao, 2022
Firstly, the different characteristics of terahertz waves compared to lower frequency bands were summarized, including the influence of meteorological factors and rough surfaces of materials on THz waves.Next, it was proposed to use ray-tracing (RT ...
Haofan YI   +5 more
doaj   +2 more sources

In-Tunnel Vehicular Radio Channel Characterization [PDF]

open access: yes2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011
Inside a tunnel, electromagnetic wave propagation differs strongly from the well understood "open-air" situation. The characterization of the tunnel environment is crucial for deploying vehicular communication systems. In this paper we evaluate vehicle-to-vehicle (V2V) radio channel measurements inside a tunnel.
Laura Bernadó   +9 more
openaire   +2 more sources

Investigation of QoS Performance Evaluation over 5G Network for Indoor Environment at Millimeter Wave Bands [PDF]

open access: yesInternational Journal of Electronics and Telecommunications, 2019
One of the crucial advancements in next-generation 5G wireless networks is the use of high-frequency signals specifically those are in the millimeter wave (mm-wave) bands.
Faizan Qamar   +4 more
doaj   +1 more source

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

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 current-driven six-channel potentiostat for rapid performance characterization of microbial electrolysis cells [PDF]

open access: yes, 2019
Knowledge of the performance of microbial electrolysis cells under a wide range of operating conditions is crucial to achieve high production efficiencies.
Molderez, Tom   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy