Results 61 to 70 of about 522,559 (296)

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

Advanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti, Finn‐Lennard Janthur, Selina Raumel, Sascha Jan Zimmermann, Sarah Seffer, René Gustus, Sebastian Herbst, Marc C. Wurz, Ludger Overmeyer, Wolfgang Maus‐Friedrichs, Hans Jürgen Maier, Florian Nürnberger   +11 more
wiley   +1 more source

Parametric channel estimation for massive MIMO

, 2017
Channel state information is crucial to achieving the capacity of multi-antenna (MIMO) wireless communication systems. It requires estimating the channel matrix.
Magoarou, Luc Le, Paquelet, Stéphane
core   +1 more source

Survey propagation at finite temperature: application to a Sourlas code as a toy model [PDF]

, 2005
In this paper we investigate a finite temperature generalization of survey propagation, by applying it to the problem of finite temperature decoding of a biased finite connectivity Sourlas code for temperatures lower than the Nishimori temperature.
B Wemmenhove, Bounkong S Mourik van J Saad D, Braunstein A, De Almeida J R L, Gallager R G, H J Kappen, Heskes T, Ihler A T, Kabashima Y, Kabashima Y, Migliorini G Saad D, Montanari A, Mooij J, Mooij J M Kappen H J, Mourik van J, Mézard M, Mézard M, Nishimori H, Nishimori H, Pearl J, Pelizzola A, Pretti M, Sigal L, Stern D H, Sun J Li Y Kang S B Shum H-Y, Yanover C, Yedidia J S, Yedidia J S   +27 more
core   +2 more sources

Statistical modeling of propagation channels for Terahertz band [PDF]

2017 IEEE Conference on Standards for Communications and Networking (CSCN), 2017
Terahertz Communication, Channel Modeling, 7 pages, 6 figures, This paper is accepted for publication in 2017 IEEE Conference on Standards for Communications & Networking (CSCN 2017)
Ekti, Ali Riza, Boyaci, Ali, Alparslan, Altan, Unal, Ilhami, Yarkan, Serhan, Gorcin, Ali, Arslan, Huseyin, Uysal, Murat   +7 more
openaire   +7 more sources

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

V2V Radio Channel Performance Based on Measurements in Ramp Scenarios at 5.9 GHz

IEEE Access, 2018
This paper focuses on vehicle-to-vehicle (V2V) radio channel properties under ramp scenarios with different structures. Ramps are categorized according to different construction structures into: 1) viaduct ramp with soundproof walls in an urban area and ...
Changzhen Li, Kun Yang, Junyi Yu, Fang Li, Yishui Shui, Fuxing Chang, Wei Chen   +6 more
doaj   +1 more source

Properties and Construction of Polar Codes [PDF]

, 2010
Recently, Ar{\i}kan introduced the method of channel polarization on which one can construct efficient capacity-achieving codes, called polar codes, for any binary discrete memoryless channel. In the thesis, we show that decoding algorithm of polar codes,
Mori, Ryuhei
core  

Scalability of the channel capacity in graphene-enabled wireless communications to the nanoscale [PDF]

, 2015
Graphene is a promising material which has been proposed to build graphene plasmonic miniaturized antennas, or graphennas, which show excellent conditions for the propagation of Surface Plasmon Polariton (SPP) waves in the terahertz band.
Alarcón Cot, Eduardo José, Cabellos Aparicio, Alberto, Jornet Montaña, Josep Miquel, Lee, Heekwan, Llatser Martí, Ignacio, Mestres Sugrañes, Albert, Solé Pareta, Josep   +6 more
core   +2 more sources

Improving Propagation Channels with Static Scatterers

IEEE Antennas and Wireless Propagation Letters
This study explores the potential enhancement of radio signal propagation in intricate environments through the deployment of basic resonant dipole scatterers. We employ the MATLAB ray tracer algorithm to examine the impact of dipolar scatterers on the power received at the user’s location.
Le Hao, Francisco S. Cuesta, Sergei A. Tretyakov, Markus Rupp   +3 more
openaire   +2 more sources

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source