Results 21 to 30 of about 4,483,702 (282)

Visible Light Positioning: A Machine Learning Approach

2022 7th South-East Europe Design Automation, Computer Engineering, Computer Networks and Social Media Conference (SEEDA-CECNSM), 2022
Visible light positioning (VLP) systems have experienced substantial revolutionary progress over the past year because they can offer great positioning accuracy without needing any additional infrastructure, as conventional radio-frequency (RF)-based systems.
Vasileios P. Rekkas, Sotirios P. Sotiroudis, David Plets, Wout Joseph, Sotirios K. Goudos   +4 more
openaire   +1 more source

Fasys: Visible-Light-Based Communication and Positioning Services towards Smart Cities

Sensors, 2023
Visible-light-based transmission application plays an important role in various types of sensor services for the Internet of Things (IoTs). However, in big data scenarios, current visible-light-based systems cannot achieve concurrent high-speed ...
Baozhu Yu, Xiangyu Liu, Lei Guo, Xuetao Wei, Song Song   +4 more
doaj   +1 more source

Effects of cooperation on visible light positioning [PDF]

2017 IEEE International Black Sea Conference on Communications and Networking (BlackSeaCom), 2017
In this paper, cooperative localization is proposed for visible light systems. The effects of cooperation on the localization accuracy of visible light positioning systems are illustrated based on a Cramer-Rao lower bound expression. The obtained expression is generic for any three-dimensional configuration and covers all possible cooperation scenarios
Erdem, Osman, Keskin, Musa Furkan, Gezici, Sinan   +2 more
openaire   +3 more sources

Joint Visible Light Communications and Positioning with Dimming

2023 31st Signal Processing and Communications Applications Conference (SIU), 2023
In this paper, a novel visible light communication (VLC) and three-dimensional (3D) positioning (VLP) algorithm based on spatial modulation (SM) with dimming capability is proposed. With the help of the signal and pilot symbols observed by a user with two photodetectors (PD) on the receiver, the detection of the transmitted data with the estimated ...
Arsan, Taner, Bayman, Irem Ozgur, Cicek, Murat Akin, Kumas, Mete Berk, Demiryurek, Tan, Arsan, Taner, Panayırcı, Erdal   +6 more
openaire   +1 more source

Visible-Light-Driven Chlorotrifluoromethylative and Chlorotrichloromethylative Cyclizations of Enynes

, 2019
Described herein is a visible-light-driven chlorotrifluoromethylative and chlorotrichloromethylative cyclization reaction to synthesize chlorotrifluoromethylated and chlorotrichloromethylated cyclic compounds. Visible-light photochemistry was utilized to
Chaoguo Yan (2408521), Xiaoyun Chen (222968), Yue Xu (246925), Daliang Tang (6728339), Hong Hou (697744), Hengxue Li (6728342), Yaocheng Shi (6168446), Shaoqun Zhu (1796116)   +7 more
core   +4 more sources

Visible-Light-Active Titanium Sulfonate Framework for Photocatalytic Organic Synthesis

, 2023
In this work, the first visible-light-active titanium sulfonate metal–organic framework (denoted as FIR-138) with 2-fold interpenetrated srs topology was synthesized by employing 2,5-dihydroxy-1,4-benzenedisulfonic acid (H4DOBSC) as ligands.
Yayong Sun (6531077), Xin Wu (10164), Shangda Li (4012301), Yu-Peng Han (13876892), Ming-Xue Guan (17019548), Dong-Fei Lu (3691483), Fei Wang (19534), Jian Zhang (1682)   +7 more
core   +4 more sources

Indoor Visible Light Positioning Algorithm based on BPNN-MLR

Guangtongxin yanjiu, 2022
Aiming at the problems of low positioning accuracy and high computational complexity of the traditional location fingerprint algorithm, this paper proposes a single Light Emitting Diode (LED) indoor positioning algorithm based on Back Propagation Neural ...
QIN Ling, LIU Zhe, WANG Feng-ying, GUO Ying, XU Yan-hong, HU Xiao-li   +5 more
doaj   +3 more sources

Visible Light Positioning Using Bayesian Filters [PDF]

Journal of Lightwave Technology, 2020
Visible light positioning has the potential to be a cost-effective technology for accurate indoor positioning. However, existing approaches often require large amounts of incoming data, usually in the form of high resolution images or dense lighting distributions.
Amsters, Robin, Holm, Dimiter, Joly, Joren, Demeester, Eric, Stevens, Nobby, Slaets, Peter   +5 more
openaire   +2 more sources

Synthesis of visible-light-activated yellow amorphous TiO2 photocatalyst [PDF]

, 2008
Visible-light-activated yellow amorphous TiO2 (yam-TiO2) was synthesised by a simple and organic-free precipitation method. TiN, an alternative precursor for TiO2 preparation, was dissolved in hydrogen peroxide under acidic condition ( pH similar to 1 ...
Randorn, Chamnan, John T. S. Irvine, Robertson, Peter; id_orcid, Irvine, John Thomas Sirr, Chamnan Randorn, Robertson, Peter, Irvine, John T S, Peter Robertson   +7 more
core   +1 more source

Visible-Light-Promoted Iridium(III)-Catalyzed Acceptorless Dehydrogenation of N‑Heterocycles at Room Temperature

, 2022
An effective visible-light-promoted iridium­(III)-catalyzed hydrogen production from N-heterocycles is described. A single iridium complex constitutes the photocatalytic system playing a dual task, harvesting visible-light and facilitating C–H cleavage ...
Gregorio Guisado-Barrios (1737748), Laura Ibáñez-Ibáñez (12525343), Jose A. Mata (1709563), Carmen Mejuto (1709593)   +3 more
core   +2 more sources