Results 81 to 90 of about 2,298 (193)

A Cascode Pair Based on SiGe HPT for RoF/LiFi Applications

Electronics Letters, Volume 61, Issue 1, January/December 2025.
In this letter, a Si/SiGe phototransistor fully integrated in an industrial 55‐nm node BiCMOS technology is incorporated in a cascode pair for high‐speed photodetection. After having presented the phototranistor structure, the opto‐microwave performances are discussed and compared with a single stage phototransistor.
Thary Valentin, Algani Catherine, Chevalier Pascal, Polleux Jean‐Luc   +3 more
wiley   +1 more source

Investigation of OFDM-Based HS-PON Using Front-End LiFiSystem for 5G Networks

Photonics, 2023
Fifth-generation (5G) technology has enabled faster communication speeds, lower latency, a broader range of coverage, and greater capacity. This research aims to introduce a bidirectional high-speed passive optical network (HS-PON) for 5G applications ...
Meet Kumari, Mai Banawan, Vivek Arya, Satyendra Kumar Mishra   +3 more
doaj   +1 more source

Load balancing in hybrid LiFi and RF networks [PDF]

, 2018
The increasing number of mobile devices challenges the current radio frequency (RF) networks. The conventional RF spectrum for wireless communications is saturating, motivating to develop other unexplored frequency bands.
Wang, Yunlu
core  

An Experimental Assessment of LiFi Data Communication

, 2020
In this paper, two functional light fidelity real-time testbeds implemented on custom Light fidelity (LiFi) kits are presented. This paper evaluates the use of LiFi technology over differ­ent distances and angular placement of illuminating devices and ...
Danquah, P., Gordon, V.
core   +1 more source

Experimental demonstrations of high‐accuracy 3D/2D indoor visible light positioning using imaging multiple‐input multiple‐output receivers and artificial neural networks

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
The paper proposes and demonstrates a high‐precision indoor 2D and 3D visible light positioning system using an imaging MIMO configuration with supervised ANN, achieving positioning accuracies of 3.7 mm (2D) and 51 mm (3D) experimentally. A simulation model verifies the results and optimises the system, improving accuracies to 2 mm (2D) and 14.7 mm (3D)
Juan. A. Apolo, Isaac. N. O. Osahon, Beatriz Ortega, Vicenç Almenar, Jianming Tang, Sujan Rajbhandari   +5 more
wiley   +1 more source

DMIMO and Machine Learning Techniques for Enhanced BER and Data Rates in 5G Free‐Space Optical Communication

IET Optoelectronics, Volume 19, Issue 1, January/December 2025.
This study introduces a dual multiple‐input multiple‐output (MIMO) method to enhance bit error rate (BER) and Q‐factor in 5G free‐space optical (FSO) communication. By integrating spatial diversity, machine learning‐based modulation, and adaptive optical filters, the system achieves data rates up to 120 Gbps while improving signal quality by up to 80%.
Ramanababu Challapalli, Chitra Perumal, S. Ramana Kumar Joga, Chidurala Saiprakash, Theophilus A. T. Kambo Jr   +4 more
wiley   +1 more source

Generalized hybrid LiFi-WiFi UniPHY learning framework towards intelligent UAV-based indoor networks

International Journal of Intelligent Networks
Advancements in unmanned aerial vehicle (UAV) technology, along with indoor hybrid LiFi-WiFi networks (HLWN), promise the development of cost-effective, energy-efficient, adaptable, reliable, rapid, and on-demand HLWN-capable indoor flying networks (IFNs)
Rizwana Ahmad, Dil Nashin Anwar, Haythem Bany Salameh, Hany Elgala, Moussa Ayyash, Sufyan Almajali, Reyad El-Khazali   +6 more
doaj   +1 more source

The geography of collective bargaining in French multi‐establishment companies

Industrial Relations: A Journal of Economy and Society, Volume 64, Issue 1, Page 125-144, January 2025.
Abstract Despite growing interest in the firm bargaining process, little research focuses on the structure of bargaining within multi‐establishment firms. We question whether running negotiations at the workplace level and/or firm level is a strategic choice for employers.
Philippe Askenazy, Clémentine Cottineau
wiley   +1 more source

Advanced LiFi technology: Laser light [PDF]

, 2020
We demonstrate high-speed LiFi data communication of over 20 Gbit/s using visible light from a laser-based white light emitting surface mount device (SMD) product platform that offers 10-100X the brightness of conventional LED sources. Equipped with high
McLaurin, Melvin, Lee, Changmin, Islim, Mohamed Sufyan, Rudy, Paul, Haas, Harald, Raring, James, Videv, Stefan, Sparks, Adrian, Shah, Binith   +8 more
core   +1 more source

Organic photovoltaics for simultaneous energy harvesting and high-speed MIMO optical wireless communications

Light: Science & Applications, 2021
We show that organic photovoltaics (OPVs) are suitable for high-speed optical wireless data receivers that can also harvest power. In addition, these OPVs are of particular interest for indoor applications, as their bandgap is larger than that of silicon,
Iman Tavakkolnia, Lethy K. Jagadamma, Rui Bian, Pavlos P. Manousiadis, Stefan Videv, Graham A. Turnbull, Ifor D. W. Samuel, Harald Haas   +7 more
doaj   +1 more source