Results 61 to 70 of about 812 (180)

Adaptive Postdistortion for Nonlinear LEDs in Visible Light Communications

IEEE Photonics Journal, 2014
In a visible light communication (VLC) system, the light-emitting diode (LED) is the major source of nonlinearity. The nonlinear effects in the VLC system are different from the conventional wireless communications system.
H. Qian, S. J. Yao, S. Z. Cai, T. Zhou
doaj   +1 more source

Exploring the Effects of LED-Based Visible Light Communication on Reading and Color Perception in Indoor Environments: An Experimental Study

Sensors, 2023
Visible light communications (VLC) is a technology that enables the transmission of digital information with a light source. VLC is nowadays seen as a promising technology for indoor applications, helping WiFi to handle the spectrum crunch.
Stefano Caputo, Lorenzo Mucchi, Regina Comparetto, Vittoria D’Antoni, Alessandro Farini, Valentina Orsi, Elisabetta Baldanzi   +6 more
doaj   +1 more source

Multidimensional Constellation Design Based on Geometric Shaping for MISO VLC With Per-LED Optical Power Constraints

IEEE Photonics Journal
Visible light communication (VLC) integrates illumination and communication, offering significant potential for 6G mobile communications. In 6G communications, reliability and low latency are critical.
Bo Gao, Jia-Ning Guo, Jian Zhang, Yan-Yu Zhang, Dun Li   +4 more
doaj   +1 more source

Hybrid Radio over Fiber and Visible Light (RoF-VLC) Communication System [PDF]

37th European Conference and Exposition on Optical Communications, 2011
We experimentally demonstrate the integration of Radio-over-Fiber and Visible Light Communication technologies, into a hybrid system for indoor communication. The system, realized according to IEEE 802.11g standard, works effectively at typical office luminance level.
A. M. Khalid, COSSU, GIULIO, CORSINI, Raffaele, PRESI, Marco, CIARAMELLA, ERNESTO   +4 more
openaire   +2 more sources

Engineered Growth of Perovskite Nanocrystals on Graphene with Subsequent TiO2 Integration for Enhanced Photodetection and Environmental Catalysis

Advanced Optical Materials, Volume 13, Issue 22, August 5, 2025.
The growth of perovskite nanocrystals on graphene, coupled with an optically active and protective oxide interface, enhances photodetection and environmental catalysis by facilitating efficient charge separation, improved light absorption, and enhanced structural stability, offering a promising approach for advanced optoelectronic and catalytic ...
Thi Thuong Thuong Nguyen, Sangmin Kim, Minseong Ju, Haney Lee, Cuong Van Le, Changjun Kim, Inseo Hwang, Changhun Yun, Hyeonseok Yoon   +8 more
wiley   +1 more source

Optical Wireless Communications with Metasurfaces: Current Status and Potential for Intelligent Communications

Advanced Photonics Research, Volume 6, Issue 7, July 2025.
Optical wireless communications (OWCs) provide a promising alternative to spectrum‐congested microwave wireless communications. Recently, the use of metasurfaces with sub‐wavelength features for dynamic beam steering, beam manipulation, and spatial or optical‐angular‐momentum mode generation, conversion, and multiplexing in OWCs is proposed and ...
Ke Wang, Chengwei Fang, Md Osman Ali, Xiaojun Chen, Safa Alghadi, Shuo Li, Jiayuan He, Sithamparanathan Kandeepan   +7 more
wiley   +1 more source

The Spatial Dimming Scheme for the MU-MIMO-OFDM VLC System

IEEE Photonics Journal, 2018
Multiuser visible light communication (MU-VLC) systems utilizing multiple-input multiple-output (MIMO) and orthogonal frequency-division multiplexing (OFDM) are gaining increased attentions recently.
Zhen Feng, Caili Guo, Zabih Ghassemlooy, Yang Yang   +3 more
doaj   +1 more source

Color-Selective Channel Modeling for Visible Light Communication (VLC)

IEEE Access
Color-selective attenuation, a specific case of wavelength- or frequency-selective attenuation, is an under-investigated but significant factor affecting the performance of color-modulated systems, particularly in Non-Line-of-Sight (NLOS) links.
Igor S. C. Rodrigues, Leandro R. Ximenes, Rangel Arthur, Rafael Perez-Jimenez   +3 more
openaire   +2 more sources

Comparative Test of Novel Fluorescent Optical Antennas for LED‐ and Laser‐Based Optical Wireless Communications

Advanced Optical Materials, Volume 13, Issue 13, May 5, 2025.
New fluorescent optical antennas are realized and tested for diverse Optical Wireless Communication (OWC) applications. The fluorescent concentrator slabs, based on different organic fluorophores, convert and convey the digital data conveyed through intensity modulation of incoming light toward a small‐area photodiode.
Marco Meucci, Mauro Aresti, Giulio Cossu, Lorenzo Gilli, Luca Oliviero, Matteo Bartolini, Andrea Pucci, Ernesto Ciaramella, Jacopo Catani   +8 more
wiley   +1 more source

Debunking war information disorder: A case study in assessing the use of multimedia verification tools

Journal of the Association for Information Science and Technology, Volume 76, Issue 5, Page 752-769, May 2025.
Abstract This paper investigates the use of multimedia verification, in particular, computational tools and Open‐source Intelligence (OSINT) methods, for verifying online multimedia content in the context of the ongoing wars in Ukraine and Gaza. Our study examines the workflows and tools used by several fact‐checkers and journalists working at Faktisk,
Sohail Ahmed Khan, Laurence Dierickx, Jan‐Gunnar Furuly, Henrik Brattli Vold, Rano Tahseen, Carl‐Gustav Linden, Duc‐Tien Dang‐Nguyen   +6 more
wiley   +1 more source