Results 21 to 30 of about 2,077,932 (214)
Fast Beam Training for IRS-Assisted Multiuser Communications [PDF]
IEEE Wireless Communications Letters, 2020 In this letter, we consider an intelligent reflecting surface (IRS)-assisted multiuser communication system, where an IRS is deployed to provide virtual line-of-sight (LoS) links between an access point (AP) and multiple users.
Changsheng You +2 more
semanticscholar +1 more source
Coherent beam-beam interaction with four colliding beams [PDF]
Physical Review E, 1995 The coherent beam-beam interaction in the absence of Landau damping is studied with a computer simulation of four space-charge-compensated colliding beams. Results are presented for the modes, phase space structures, widths, and growth rates of coherent beam-beam resonances.
, Podobedov, , Siemann
openaire +2 more sources
Deep Learning for mmWave Beam and Blockage Prediction Using Sub-6 GHz Channels [PDF]
IEEE Transactions on Communications, 2019 Predicting the millimeter wave (mmWave) beams and blockages using sub-6 GHz channels has the potential of enabling mobility and reliability in scalable mmWave systems.
Muhammad Alrabeiah, A. Alkhateeb
semanticscholar +1 more source
Investigation of the flat beam model of the beam-beam interaction [PDF]
Proceedings of the 2003 Bipolar/BiCMOS Circuits and Technology Meeting (IEEE Cat. No.03CH37440), 2003 At the interaction point of a storage ring collider each beam is subject to perturbations due to the electromagnetic field of the counterrotating beam. For flat beams, a well-known approximation models the beam by a current sheet which is uniform in the horizontal plane, restricting the particle motion to the vertical direction. In this classical model
Bjoern S. Schmekel +2 more
openaire +3 more sources
Simulation of the beam halo from the beam-beam interaction [PDF]
Physical Review E, 1994 A technique for simulating the beam halo in circular ${\mathit{e}}^{+}$${\mathit{e}}^{\mathrm{\ensuremath{-}}}$ colliders is introduced, tested, and applied. Amplitude space is divided into core and halo regions, and only halo particles are tracked saving a factor of 100 or more in CPU time.
, Chen, , Irwin, , Siemann
openaire +2 more sources
Sequence-to-Sequence Learning as Beam-Search Optimization [PDF]
Conference on Empirical Methods in Natural Language Processing, 2016 Sequence-to-Sequence (seq2seq) modeling has rapidly become an important general-purpose NLP tool that has proven effective for many text-generation and sequence-labeling tasks.
Sam Wiseman, Alexander M. Rush
semanticscholar +1 more source
Behavior of reinforced concrete beams loaded by transversal bending forces [PDF]
Facta Universitatis. Series: Architecture and Civil Engineering, 2013 Based on the experimental research on the beams MB 25 and MB 80 to short term load and long term load, the assumption that the truss theory is based on the actual behavior of reinforced concrete beams loaded by bending until failure cannot be ...
Radojičić Vladimir
doaj +1 more source
Vibrations of cracked reinforced and prestressed concrete beams [PDF]
Facta Universitatis. Series: Architecture and Civil Engineering, 2008 The dynamic behaviour of bent reinforced concrete beams in elastic range is significantly influenced by cracks caused by former loads. Considering this fact a more accurate calculation of the eigenfrequencies of the beams is available.
Huszár Zsolt
doaj +1 more source
Electron-beam spectroscopy for nanophotonics [PDF]
Nature Materials, 2019 Progress in electron-beam spectroscopies has recently enabled the study of optical excitations with combined space, energy and time resolution in the nanometre, millielectronvolt and femtosecond domain, thus providing unique access into nanophotonic ...
A. Polman +2 more
semanticscholar +1 more source
Beam-Beam Simulations for Double-Gaussian Beams [PDF]
Proceedings of the 2005 Particle Accelerator Conference, 2006 Electron cooling together with intra-beam scattering results in a transverse distribution that can best be described by a sum of two gaussians, one for the high-density core and one for the tails of the distribution [1]. Simulation studies are being performed to understand the beam-beam interaction of these double-gaussian beams.
Montag, C. +3 more
openaire +1 more source