Results 101 to 110 of about 28,552 (197)

Analysis of Machine Learning-Based NLOS Signal Identification Algorithm for UWB Indoor Localization Using CIR Waveform Features [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Ultra-wideband (UWB) technology stands out among numerous indoor positioning techniques due to its high operating frequency, low interception capability, resistance to multipath effects, and strong penetration.
K. Wang, C. Yang
doaj   +1 more source

Thermal‐Stable and High‐Performance Organic Nonlinear Optical Chromophores for Advanced Electro‐Optic Modulators

Advanced Science, Volume 13, Issue 7, 3 February 2026.
To address the challenge of high electro‐optic (EO) activity and thermal stability, four chromophores (BHG1–BHG4) are designed. These incorporate steric hindrance groups into the aniline donor, significantly raising their glass transition temperatures and enhancing alignment stability. The neat BHG2 film achieves an exceptional EO coefficient of 304 pm 
Changqing Ge, Fuyang Huo, Jiangyi Liu, Xiuyou Han, Zhihua Li, Zhuo Chen, Abdul Rahman, Ruonan Li, Pengwei Li, Shuhui Bo   +9 more
wiley   +1 more source

Link Gain and Pulse Width Broadening Evaluation of Non-Line-of-Sight Optical Wireless Scattering Communication Over Broad Spectra

IEEE Photonics Journal, 2017
In addition to large path loss, non-line-of-sight (NLOS) optical wireless scattering communication suffers time dispersion due to the multipath nature of the NLOS scattering channel.
Yu Sun, Chen Gong, Zhengyuan Xu, Yafeng Zhan   +3 more
doaj   +1 more source

Theoretical Study of Electrostatic Embedding and Properties of a Novel Quinolinone‐Chalcone Crystal and a Comparative Analysis with Dihydroquinolinone Analogs

ChemistryOpen, Volume 15, Issue 2, February 2026.
This graphical abstract highlights the molecular framework, electronic features, and nonlinear optical response of the quinolinone–chalcone crystal QCCP. The left panel displays the full molecular structure and the electrostatic environment introduced by iterative charge embedding, illustrating the crystal‐packing–induced dipole enhancement observed in
Clodoaldo Valverde, Nathália M. Pires, Antônio N. Borges, Daphne C. Fernandes, Vitor S. Duarte, Giulio D. C. D’Oliveira, Jean M. F. Custodio, Caridad N. Pérez, Francisco A. P. Osório, Hamilton B. Napolitano   +9 more
wiley   +1 more source

RM-CSTV: An effective high-resolution method of non-line-of-sight millimeter-wave radar 3-D imaging

National Science Open
Non-line-of-sight (NLOS) imaging is a novel radar sensing technology that enables the reconstruction of hidden targets. However, it may suffer from synthetic aperture length reduction caused by ambient occlusion. In this study, a complex total variation (
Liu Xinyuan, Wei Shunjun, Pu Wei, Cai Xiang, Wen Yanbo, Guo Shisheng, Kong Lingjiang   +6 more
doaj   +1 more source

Method 2 at NLO

, 2004
This note describes a theoretical study of Wbb and Wjj final states at the Tevatron using the NLO program MCFM. We extensively study the effect of NLO corrections with respect to variations of input parameters such as the minimum jet p_T and the choice of renormalization and factorization scales.
Campbell, J., Huston, J.
openaire   +2 more sources

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 17-33, January/February 2026.
In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak, Daniel Gaetano Riviello, Alessandro Guidotti, Alessandro Vanelli‐Coralli   +3 more
wiley   +1 more source

Comparison of MIMO channels from multipath parameter extraction and direct channel measurements [PDF]

, 2004
This work presents a MIMO throughput performance analysis of dynamic wideband double-directional channel measurements that were recently obtained by the University of Bristol. Identical 16-element uniform circular arrays (UCAs) were employed at both ends
Beach, MA, Pal, A, Tan, CM
core  

Design of Stimuli‐Responsive Cobalt Tetraphenylporphyrinate‐Chitosan Microspheres for Advanced Biosensors

European Journal of Inorganic Chemistry, Volume 29, Issue 3, January 21, 2026.
We report on new cobalt tetraphenylporphyrinate‐chitosan‐based microspheres developed for biosensing and anticancer therapy applications. We analyzed their second‐harmonic generation (SHG) behavior using a high‐resolution SHG microscope. In addition to the typical porphyrinate fluorescence, the microspheres exhibit a high‐intensity SHG response and ...
Domenica Marabello, Paola Benzi, Carlo Canepa, Leonardo Mortati, Giorgio Volpi, Itzel M. Garnica‐Palafox, Francisco M. Sánchez‐Arévalo, Nadia A. Vázquez‐Torres, Alma Cioci   +8 more
wiley   +1 more source

An NLOS Ranging Error Mitigation Method for 5G Positioning in Indoor Environments

Applied Sciences
Positioning based on wireless signals such as mobile communication networks has become an important means to provide high-precision location services in environments where satellite signals are blocked.
Jingrong Liu, Zhongliang Deng, Enwen Hu
doaj   +1 more source