Results 41 to 50 of about 950,179 (281)
IEEE Access, 2019 The fifth generation (5G) wireless network technology is set to be standardized by 2020, where the main goals are to improve capacity, reliability, and energy efficiency while reducing latency and massively increasing connection density.
Daniel Peethala +2 more
doaj +1 more source
Mass-Galaxy offsets in Abell 3827, 2218 and 1689: intrinsic properties or line-of-sight substructures? [PDF]
, 2014 We have made mass maps of three strong-lensing clusters, Abell 3827, Abell 2218 and Abell 1689, in order to test for mass-light offsets. The technique used is GRALE, which enables lens reconstruction with minimal assumptions, and specifically with no ...
Liesenborgs, Jori +3 more
core +1 more source
International Journal of Distributed Sensor Networks, 2018 The mitigation of non-line-of-sight propagation conditions is one of main challenges in wireless signal–based indoor localization. When radio frequency identification localization technology is applied in applications, the received signal strength ...
Jie Wu, Minghua Zhu, Bo Xiao, Wei He
doaj +1 more source
Accurate but fragile passive non-line-of-sight recognition
Communications Physics, 2021 Non-line-of-sight imaging allows reconstruction and recognition of an obscured object, but external manipulation of the data can lead to inaccurate results.
Yangyang Wang +7 more
doaj +1 more source
Hybrid Beamforming With Sub-arrayed MIMO Radar: Enabling Joint Sensing and Communication at mmWave Band [PDF]
, 2018 In this paper, we propose a beamforming design for dual-functional radar-communication (DFRC) systems at the millimeter wave (mmWave) band, where hybrid beamforming and sub-arrayed MIMO radar techniques are jointly exploited.
Liu, Fan, Masouros, Christos
core +2 more sources
Semi-Definite Programming Relaxation for Non-Line-of-Sight Localization
, 2012 We consider the problem of estimating the locations of a set of points in a k-dimensional euclidean space given a subset of the pairwise distance measurements between the points.
Ekambaram, Venkatesan +2 more
core +1 more source
Indoor wireless channel modeling from 2.4 to 24 GHz using a combined E/H-Plane 2D ray tracing method [PDF]
, 2004 Future wireless systems are moving to high frequencies for additional bandwidth and frequency reuse. This makes it very important to have accurate and time-efficient models for system planning.
Lu, Dai, Rutledge, David
core +1 more source
Non-line-of-sight reconstruction via structure sparsity regularization
Optics Letters, 2023 Non-line-of-sight (NLOS) imaging allows for the imaging of obje¬¬cts around a corner, which enables potential applications in various fields such as autonomous driving, robotic vision, medical imaging, security monitoring, etc. However, the quality of reconstruction is challenged by low signal-noise-ratio (SNR) measurements. In this study, we present a
Duolan Huang +3 more
openaire +3 more sources
Non-line-of-sight Reconstruction Using Efficient Transient Rendering [PDF]
ACM Transactions on Graphics, 2020 Being able to see beyond the direct line of sight is an intriguing prospect and could benefit a wide variety of important applications. Recent work has demonstrated that time-resolved measurements of indirect diffuse light contain valuable information for reconstructing shape and reflectance properties of objects located around a corner.
Julian Iseringhausen, Matthias B. Hullin
openaire +2 more sources
Volatile-Rich Circumstellar Gas in the Unusual 49 Ceti Debris Disk
, 2014 We present Hubble Space Telescope STIS far-UV spectra of the edge-on disk around 49 Ceti, one of the very few debris disks showing sub-mm CO emission.
Grady, Carol A. +4 more
core +1 more source