Results 81 to 90 of about 351,545 (187)

A Gaussian Process-Enhanced Non-Linear Function and Bayesian Convolution–Bayesian Long Term Short Memory Based Ultra-Wideband Range Error Mitigation Method for Line of Sight and Non-Line of Sight Scenarios

Mathematics
Relative positioning accuracy between two devices is dependent on the precise range measurements. Ultra-wideband (UWB) technology is one of the popular and widely used technologies to achieve centimeter-level accuracy in range measurement.
A. S. M. Sharifuzzaman Sagar, Samsil Arefin, Eesun Moon, Md Masud Pervez Prince, L. Minh Dang, Amir Haider, Hyung Seok Kim   +6 more
doaj   +1 more source

N$^2$LoS: Single-Tag mmWave Backscatter for Robust Non-Line-of-Sight Localization

The accuracy of traditional localization methods significantly degrades when the direct path between the wireless transmitter and the target is blocked or non-penetrable. This paper proposes N2LoS, a novel approach for precise non-line-of-sight (NLoS) localization using a single mmWave radar and a backscatter tag.
Shi, Zhenguo, Yan, Yihe, Wang, Yanxiang, Hu, Wen, Chou, Chun Tung   +4 more
openaire   +2 more sources

Measurement-Based LoS/NLoS Channel Modeling for Hot-Spot Urban Scenarios in UMTS Networks

International Journal of Antennas and Propagation, 2014
A measurement campaign is introduced for modeling radio channels with either line-of-sight (LoS) or non-line-of-sight (NLoS) connection between user equipment (UE) and NodeB (NB) in an operating universal mobile telecommunications system.
Jiajing Chen, Xuefeng Yin, Li Tian, Nan Zhang, Yongyu He, Xiang Cheng, Weiming Duan, Silvia Ruiz Boqué   +7 more
doaj   +1 more source

Control Line of Sight (LOS) using Robust Control Technique

International Journal of Control and Automation, 2017
Deepti Thapliyal, Deepak Punetha
openaire   +1 more source

Adaptive Beam Pairing and Local Interpolation for Robust Analytical Beam Training in RIS-Assisted Wideband THz Systems

IEEE Open Journal of the Communications Society
Wideband terahertz (THz) communication systems offer ultra-high data rates and low latency for future sixth-generation (6G) networks, but they face severe path loss and beam split effects that degrade direction estimation in reconfigurable intelligent ...
Zaid Albataineh, Haythem Bany Salameh, Mohammad Al Bataineh, Ahmed Musa Alshorman   +3 more
doaj   +1 more source

Correction Method for Thermal Deformation Line-of-Sight Errors of Low-Orbit Optical Payloads Under Unstable Illumination Conditions

Remote Sensing
Accurate optical axis pointing of optical payloads in low orbits is essential for sustained indication and high-precision positioning of motion targets.
Yao Li, Xin Chen, Guangsen Liu, Peng Rao
doaj   +1 more source

MIMO Channel Capacity in an Indoor Line-Of-Sight (LOS) Environment

MIMO Channel Capacity in an Indoor Line-Of-Sight (LOS) Environment
identifier:oai:t2r2.star.titech.ac.jp ...
openaire  

On the Application of a Sparse Data Observers (SDOs) Outlier Detection Algorithm to Mitigate Poisoning Attacks in UltraWideBand (UWB) Line-of-Sight (LOS)/Non-Line-of-Sight (NLOS) Classification

Future Internet
The classification of the wireless propagation channel between Line-of-Sight (LOS) or Non-Line-of-Sight (NLOS) is useful in the operation of wireless communication systems. The research community has increasingly investigated the application of machine learning (ML) to LOS/NLOS classification and this paper is part of this trend, but not all the ...
openaire   +2 more sources

Adaptive Kalman Filter-Based UWB Location Tracking with Optimized DS-TWR in Workshop Non-Line-of-Sight Environments. [PDF]

Sensors (Basel)
Wu J, Xiong Y, Li W, Xia W.
europepmc   +1 more source

A Study on a Low-Cost IMU/Doppler Integrated Velocity Estimation Method Under Insufficient GNSS Observation Conditions. [PDF]

Sensors (Basel)
Wang Y, Zhang H, Li K, Xu H, Chen Y.
europepmc   +1 more source