Results 21 to 30 of about 17,373 (186)

Scatterer information based indoor NLOS multiple base station cooperative localization algorithm

open access: yesTongxin xuebao, 2021
In indoor environments, the localization accuracy of existing line of sight (LOS) solutions will deteriorate severely in non-line-of-sight (NLOS) environment.In order to solve this problem, an scatterer information based indoor NLOS multiple base ...
Liangbo XIE   +6 more
doaj   +2 more sources

An Advanced Artificial Fish School Algorithm to Update Decision Tree for NLOS Acoustic Localization Signal Identification with the Dual-Receiving Method

open access: yesApplied Sciences, 2023
For indoor sensor systems, it is essential to implement an extra supporting area notification part. To inform the real-time coordinates, the time difference of arrival (TDOA) algorithm can be introduced.
Ruixiang Kan   +4 more
doaj   +1 more source

HMM-Based tracking of moving terminals in dense multipath indoor environments [PDF]

open access: yes, 2005
This paper deals with the problem of radio localization of moving terminals (MTs) for indoor applications with mixed line-of sight/non-line-of-sight (LOS/NLOS) conditions.
C. Morelli   +3 more
core   +1 more source

Research Progress of Non-line-of-sight Underwater Wireless Optical Communication Technology

open access: yesGuangtongxin yanjiu, 2023
Non-Line-of-Sight (NLOS) Underwater Wireless Optical Communication (UWOC) is mainly realized through the air-seawater interface reflection or the scattering of light by particles in seawater.
KONG Mei-wei   +5 more
doaj  

Accurate Empirical Path Loss Models with Route Classification for mmWave Communications

open access: yesInternational Journal of Antennas and Propagation, 2022
This paper presents accurate empirical path loss models with route classification for the high band frequency of 5 G wireless. Propagation path routes are mainly classified into line of sight (LOS) and non-line-of-sight (NLOS).
Supachai Phaiboon, Pisit Phokharatkul
doaj   +1 more source

Target tracking with line-of-sight identification in sensor networks under unknown measurement noises [PDF]

open access: yes, 2009
—Tracking a target is a fundamental and crucial problem in wireless sensor networks. It is well known that non-line-of-sight (NLOS) propagation will significantly degrade the tracking accuracy if its effects are ignored.
H. C. So, H. Q. Liu
core   +1 more source

Non-line-of-sight Imaging

open access: yes, 2020
Emerging single-photon-sensitive sensors combined with advanced inverse methods to process picosecond-accurate time-stamped photon counts have given rise to unprecedented imaging capabilities.
Faccio, D., Velten, A., Wetzstein, G.
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]

open access: yes, 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

2GHz MIMO channel model from experimental outdoor data analysis in UMTS [PDF]

open access: yes, 2003
The key objective of this work was to obtain a MIMO model for a line of sight (LOS) channel component as well as the covariance matrix for a non-LOS deployment.
Beach, MA   +4 more
core   +2 more sources

Hybrid Beamforming With Sub-arrayed MIMO Radar: Enabling Joint Sensing and Communication at mmWave Band [PDF]

open access: yes, 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

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