Results 21 to 30 of about 264,735 (274)
IEEE Access, 2019 This paper presents a measurement-based analysis of wideband 39 GHz millimeter wave (mm-wave) dual-polarized propagation channel under the impact of foliage presence between a transmitter (Tx) and a receiver (Rx).
Yejian Lv +3 more
doaj +1 more source
Fourier relationship between angular position and optical orbital angular momentum [PDF]
, 2006 We demonstrate the Fourier relationship between angular position and angular momentum for a light mode. In particular we measure the distribution of orbital angular momentum states of light that has passed through an aperture and verify that the orbital ...
Barnett, Stephen +4 more
core +2 more sources
3-D Spatial Modeling of Network Interference in Two-Tier Heterogeneous Networks
IEEE Access, 2017 The multi-tier heterogeneous network (HetNet) architecture can potentially address the massive connectivity and high throughput demands of the emerging fifth generation (5G) of wireless networks.
Syed Junaid Nawaz +4 more
doaj +1 more source
IET Microwaves, Antennas & Propagation, 2023 A reliable train‐to‐ground wireless communication system is proposed for the foundation of the safe operation of Hyperloop. The wireless channel characteristics of Hyperloops at millimetre‐wave (mmWave) bands are analysed based on the ray‐tracing method.
Kai Wang +5 more
doaj +1 more source
IEEE Access, 2017 We consider the challenging problem of joint angle estimation and signal reconstruction for coherently distributed (CD) sources in massive multiple-input-multiple-output (MIMO) systems employing uniform rectangular arrays. A simplified method inspired by
Yuan Zhou +5 more
doaj +1 more source
An Indoor Channel Model for High Data-Rate Communications in D-Band
IEEE Access, 2020 This paper proposes a measurement based modeling of D-band indoor channels. Different indoor environments were considered including Line-of-Sight (LOS) and Non Line-of-Sight (NLOS) conditions.
L. Pometcu, R. D'Errico
doaj +1 more source
Matter and Radiation at Extremes, 2023 Laser–plasma instability (LPI) is one of the main obstacles to achieving predictable and reproducible fusion at high gain through laser-driven inertial confinement fusion (ICF).
Yi Guo +5 more
doaj +1 more source
Effects of energy spread on Brightness and Coherence of undulator sources [PDF]
, 2018 The (spectral) brightness for partially transverse coherent sources as Synchrotron Radiation (SR) and Free-Electron Laser (FEL) sources can be defined as the maximum of the Wigner distribution.
Geloni, Gianluca +4 more
core +2 more sources
Angular motion point spread function model considering aberrations and defocus effects [PDF]
Journal of the Optical Society of America A, 2006 When motion blur is considered, the optics point spread function (PSF) is conventionally assumed to be fixed, and therefore cascading of the motion optical transfer function (OTF) with the optics OTF is allowed. However, in angular motion conditions, the image is distorted by space-variant effects of wavefront aberrations, defocus, and motion blur. The
Iftach, Klapp, Yitzhak, Yitzhaky
openaire +2 more sources
Wideband Hybrid Precoding with Angular Spread for THz Massive MIMO
Journal of Engineering Science and Technology ReviewA. Sammaiah, M. Pranay Kumar
openaire +2 more sources