Results 51 to 60 of about 21,299 (341)

Secrecy Performance Analysis of Hybrid RF/VLC Dual-Hop Relaying Systems

Frontiers in Physics, 2021
In this article, the secrecy performance of a hybrid radio frequency (RF)/visible light communication (VLC) system is studied. In this hybrid system, the source node (i.e., Alice) transmits information to the relay node via the outdoor RF link.
Jiaoli Liu, Jinyuan Wang, Jinyuan Wang, Jinyuan Wang, Bingyuan Zhang, Qinglin Wang   +5 more
doaj   +1 more source

Advances in Sustainable and Wearable Textile Based Soft Robotics

Advanced Functional Materials, EarlyView.
This Review examines advances in wearable textile‐based soft robotics, focusing on sustainable materials, integrated sensing, and scalable actuation. It discusses manufacturing and system integration across healthcare, assistive robotics, prosthetics, and human–machine interfaces, and highlights key challenges in circular design, including life‐cycle ...
Zahir Abbas, Marzia Dulal, Sophia K. Novoselov, Victoria K. Novoselov, Kostya S. Novoselov, Shaila Afroj, Nazmul Karim   +6 more
wiley   +1 more source

Energy-Efficient Emerging Optical Wireless Links

Energies, 2023
In recent years, the tremendous increase in data traffic carried by wireless communication networks has generated the urgent need for establishing more energy-efficient wireless communication systems.
George K. Varotsos, Konstantinos Aidinis, Hector E. Nistazakis, Zoran Gajic   +3 more
doaj   +1 more source

Receiver alignment dependence of a GA controlled optical wireless transmitter [PDF]

, 2009
A genetic algorithm controlled multispot transmitter is demonstrated to be capable of optimizing the received power distribution for single element receivers in fully diffuse mobile indoor optical wireless systems.
Leeson, Mark S., Higgins, Matthew D., Green, Roger   +2 more
core   +1 more source

Experimental study of laser spot tracking for underwater optical wireless communication.

Optics Express
In this paper, a novel laser spot tracking algorithm that incorporates the Kalman filter with the continuously adaptive Meanshift algorithm (Cam-Kalm) is proposed and employed in an underwater optical wireless communication (UOWC) system.
Danyang Chen, Zhao Li, Jianping Wang, Huimin Lu, Rui Hao, Kaigang Fan, Jianli Jin, Qingxuan Wang, Shuai Wu   +8 more
semanticscholar   +1 more source

Engineered AuNPs/fMWCNT Nanocomposite Electrodes for High‐Sensitivity Methylglyoxal Sensing in Saliva and Sweat for Non‐Invasive Diabetes Monitoring

Advanced Healthcare Materials, EarlyView.
An AuNPs/fMWCNT nanocomposite‐modified screen‐printed carbon electrode was engineered via sequential electrodeposition and integrated into a 3D‐printed microfluidic platform for ultrasensitive methylglyoxal detection. The non‐invasive sensing platform enables rapid analysis in saliva and sweat, highlighting strong potential for wearable point‐of‐care ...
Ahadul Amin Soshi, Md Younus Ali, Dadbeh Pazuki, Matiar M.R. Howlader   +3 more
wiley   +1 more source

MIMO MC-CDMA Systems over indoor optical wireless communication channels [PDF]

, 2011
Optical wireless communication systems offer a number of advantages over their radio frequency counterparts. The advantages include freedom from fading, freedom from spectrum regulations and abundant bandwidth.
Alsaadi, Fuad Eid S
core  

Indoor gigabit optical wireless communications: challenges and possibilities

, 2010
Indoor Gigabit optical wireless communication systems have the potential to offer multiple high-speed data services that can be delivered to homes via an optical fibre cable in the near future. In this paper we will discuss the challenges involved in the
Ghassemlooy, Zabih, Dominic O'Brien, Grahame Faulkner, Ghassemlooy, Z, Faulkner, G, O'Brien, Dominic, Faulkner, Grahame, Le Minh, H, Zabih Ghassemlooy, Le Minh, Hoa, O'Brien, D, Hoa Le Minh   +11 more
core   +1 more source

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

Advanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong, You Zhou, Qingxiu Li, Wenyu Zhao, Sunyingyue Geng, Hangfei Li, Yan‐Bing Leng, Shirui Zhu, Guanglong Ding, Yongbiao Zhai, Ziyu Lv, Ye Zhou, Su‐Ting Han   +12 more
wiley   +1 more source

High isolation MIMO antenna based on metasurface for linear-circular polarization conversion and decoupling

Scientific Reports
A multi-layer metasurface (MTS) design is proposed in this paper, which simultaneously enables linear-to-circular (LTC) polarization conversion and decoupling functionality for a 3 × 3 antenna array.The antenna operates in the sub-6 GHz frequency band ...
Ting Wu, Fang Ma, Libin Wang, Jing Wen
doaj   +1 more source