Results 81 to 90 of about 81,206 (179)
Non-line-of-sight-imaging using dynamic relay surfaces
Optics Express, 2020 The non-line-of-sight (NLOS) imaging problem has attracted a lot of interest in recent years. The objective is to produce images of objects that are hidden around a corner, using the information encoded in the time-of-flight (ToF) of photons that scatter multiple times after incidence at a given relay surface.
Marco La Manna +3 more
openaire +3 more sources
Imaging Techniques for 3-Dimensional, Non-Line-of-Sight Structures Fabricated in Silicon Carbide
MetrologyAdvances in silicon carbide fabrication techniques enable the fabrication of high aspect ratio non-line-of-sight structures. The further development of non-line-of-sight fabrication tools and the use of the non-line-of-sight structures requires a set of ...
Jared E. Payne +4 more
doaj +1 more source
Passive non-line-of-sight imaging using plenoptic information
Journal of the Optical Society of America A, 2020 We present a methodology for recovering the perspective imagery of a non-line-of-sight scene based on plenoptic observations of indirect photons scattered from a homogeneous surface. Our framework segregates the visual contents observed along the scattering surface into angular and spatial components.
Di, Lin, Connor, Hashemi, James R, Leger
openaire +2 more sources
Average Error Probability Analysis in mmWave Cellular Networks
, 2015 In this paper, a mathematical framework for the analysis of average symbol error probability (ASEP) in millimeter wave (mmWave) cellular networks with Poisson Point Process (PPP) distributed base stations (BSs) is developed using tools from stochastic ...
Gursoy, M. Cenk, Turgut, Esma
core +1 more source
Ultrawideband Non-Line-of-Sight Classification Using Transformer-Convolutional Neural Networks
IEEE AccessUltrawideband technology enables high-precision indoor positioning, but its performance degrades significantly in non-line-of-sight environments due to signal obstruction.
Hae-Ji Hwang +2 more
doaj +1 more source
Uplink Spectral Efficiency of Massive MIMO with Spatially Correlated Rician Fading
, 2018 This paper considers the uplink (UL) of a multi-cell Massive MIMO (multiple-input multiple-output) system with spatially correlated Rician fading channels.
Björnson, Emil +2 more
core +1 more source
IEEE AccessNon-Line-of-Sight (NLOS) reception is acknowledged as a primary source of positioning error in Global Navigation Satellite System (GNSS) applications, particularly within dense urban settings. When the direct satellite path is obstructed by buildings and
S. Titouni +8 more
doaj +1 more source
Achievable directive antenna gain measurements and modeling for 60 GHz indoor links
Scientific ReportsHighly directive antennas may be a key component in millimeter wave links to offset their inherently high path losses. In cluttered scenarios such as Non-Line-Of-Sight (NLOS) indoor settings, antenna gain is degraded by the interaction of the channel ...
Sebastián Bruna +8 more
doaj +1 more source
Machine learning-based intelligent localization technique for channel classification in massive MIMO
Discover Internet of ThingsMultiple-input multiple-output (MIMO) technology has been widely adopted in wireless communications, which enables the simultaneous transmission of multiple data streams via multiple transmitting and receiving antennas.
Fadhil Ghrabat +2 more
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Учёные записки Казанского университета: Серия Физико-математические наукиUsing a three-dimensional topographic map of a typical microdistrict in Kazan, multipath radio wave propagation in mobile radio communication systems was modeled by the method of ray tracing.
R. F. Khaliullin, A. I. Sulimov
doaj +1 more source