Results 11 to 20 of about 145,078 (261)
Joint time and beam domain non-orthogonal multiple access
Tongxin xuebao, 2021 In order to improve the system’s ability to accommodate connected devices, a joint time and beam domain non-orthogonal multiple access (NOMA) scheme was proposed, which was suitable for millimeter wave massive multiple-input multiple-output (MIMO ...
Zhaoyang ZHANG +3 more
doaj +2 more sources
Manipulating Ferroelectric Domains in Nanostructures Under Electron Beams [PDF]
Physical Review Letters, 2013 Freestanding BaTiO3 nanodots exhibit domain structures characterized by distinct quadrants of ferroelastic 90° domains in transmission electron microscopy (TEM) observations. These differ significantly from flux-closure domain patterns in the same systems imaged by piezoresponse force microscopy. Based upon a series of phase field simulations of BaTiO3
Ahluwalia, R. +7 more
openaire +5 more sources
IEEE Access, 2018 We investigate non-orthogonal unicast and multicast (NOUM) transmission for massive multiple-input multiple-output systems, where only statistical channel state information of all user terminals is available at the base station.
Li You +4 more
doaj +1 more source
Joint Deblurring and Denoising of THz Time-Domain Images
IEEE Access, 2021 Terahertz (THz) pulse/time-domain imaging attracted increased interest in recent years mostly due to its ability to extract dielectric properties of sample materials (i.e., absorption coefficient and the refraction index) from the amplitude and phase of ...
Marina Ljubenovic +3 more
doaj +1 more source
Study on Coupled Vertical Vehicle-Bridge Dynamic Performance of Medium and Low-Speed Maglev Train
Applied Sciences, 2021 The levitation stability of maglev trains is determined by the interaction of vehicle-bridge dynamic characteristics. The state change of vehicle and track beam will affect the dynamic performance of maglev trains.
Yifeng Song +4 more
doaj +1 more source
A Novel Massive MIMO Beam Domain Channel Model [PDF]
2020 IEEE Wireless Communications and Networking Conference (WCNC), 2020 A novel beam domain channel model (BDCM) for massive multiple-input multiple-output (MIMO) communication systems has been proposed in this paper. The near-field effect and spherical wavefront are firstly assumed in the proposed model, which is different from the conventional BDCM for MIMO based on the far-field effect and plane wavefront assumption ...
Fan Lai 0002 +4 more
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Electron beam driven ion-acoustic solitary waves in plasmas with two kappa-distributed electrons
Scientific Reports, 2023 Formation and the basic features of arbitrary amplitude ion-acoustic solitary waves (IASWs) in a plasma consisting of warm positive ions, two $$\kappa$$ κ -distributed electrons and an electron beam are investigated by using the Sagdeev pseudopotential ...
M. M. Hatami
doaj +1 more source
Spatial Domain Interactions between Ultraweak Optical Beams [PDF]
Physical Review Letters, 2013 17 pages, 5 ...
Khadka, Utsab, Sheng, Jiteng, Xiao, Min
openaire +3 more sources
Beam-domain hybrid time-switching and power-splitting SWIPT in full-duplex massive MIMO system
EURASIP Journal on Wireless Communications and Networking, 2018 In this paper, we consider the beam-domain hybrid time-switching (TS) and power-splitting (PS) simultaneous wireless information and power transfer (SWIPT) protocol design in full-duplex (FD) massive multiple-input multiple-output (MIMO) system, where ...
Kui Xu +3 more
doaj +1 more source
Proton beam therapy should remain in the public domain [PDF]
Canadian Medical Association Journal, 2019 We would like to respond to the article “Proton beam therapy for cancer” by Tsang and Patel that was published recently in CMAJ .[1][1] As the authors state, radiotherapy is a critical element of treatment for one-third to half of all patients with cancer.
Tarek, Hijal +2 more
openaire +2 more sources