Results 41 to 50 of about 12,357 (334)
EnergiesOptical wireless power transmission systems are attracting attention as a new power transmission technology because they can supply power wirelessly over long distances.
Masahiro Koga +4 more
doaj +1 more source
Optimisation of transmission bandwidth for indoor cellular OWC system using a dynamic handover decision-making algorithm [PDF]
, 2012 In this paper, we propose a novel cellular optical wireless communications (COWC) system with four diffused cells. A dynamic handover scheme is proposed to make the link more flexible by the way of adaptive channel allocation in different environments ...
Rajbhandari, S +14 more
core +1 more source
Mine emergency communication system
Gong-kuang zidonghua, 2019 Feasibility of using existing mine communication system as emergency communication system was analyzed. Leakage communication system, inductive communication system, multi-base station mobile communication system, broadcast communication system and ...
Mine emergency communication system
doaj +1 more source
Investigation on a 220 GHz Quasi-Optical Antenna for Wireless Power Transmission
Electronics, 2021 This paper investigates a 220 GHz quasi-optical antenna for millimeter-wave wireless power transmission. The quasi-optical antenna consists of an offset dual reflector, and fed by a Gaussian beam that is based on the output characteristics of a high ...
Meng Han +4 more
semanticscholar +1 more source
Free Space Optical Link for Simultaneous Power and 1 Gb/s Data Transmission
, 2021 S.23-24We study the trade-off between power and data transfer for a two-meter wireless gallium-arsenide laser and photovoltaic link. The use of orthogonal frequency-division multiplexing with adaptive bit and power loading results in a peak data rate of ...
Haas, H., Fakidis, J., Helmers, Henning
core +1 more source
IEEE Photonics Journal, 2021 The most significant challenge of underwater optical wireless communication (UOWC) system is to overcome its limited coverage. To expand the achievable communication range, we investigate the performance of the dual-hop UOWC system with simultaneous ...
Kuan Ye, Cong Zou, Fang Yang
doaj +1 more source
Physica Status Solidi (a)Herein, InGaAsP photovoltaic devices are fabricated for 1.06 μm band optical wireless power transmission. The fabrication process incorporates multi‐junctions through the introduction of tunnel junctions, an increase in the thickness of the surface ...
Takaya Oshimo +16 more
semanticscholar +1 more source
Optical Wireless Power Transfer for Implanted and Wearable Devices
Sustainability, 2023 Optical wireless power transfer (OWPT) has been employed in the literature as a wireless powering approach for implanted and wearable devices. However, most of the existing studies on this topic have not studied the performances of OWPT systems when ...
Dinh Hoa Nguyen
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele +2 more
wiley +1 more source
Reliable low-power wireless networks over unstable transmission power
, 2017 Internet of Things promises large scale interconnected sensing and actuation capabilities in domains, areas, applications and activities never accessed before by Internet.
Liotta, Antonio +9 more
core +1 more source