Results 61 to 70 of about 7,361,986 (367)

Heuristics for Network Coding in Wireless Networks [PDF]

open access: yes, 2007
Multicast is a central challenge for emerging multi-hop wireless architectures such as wireless mesh networks, because of its substantial cost in terms of bandwidth. In this report, we study one specific case of multicast: broadcasting, sending data from
Adjih, Cédric   +2 more
core   +4 more sources

Micropatterned Biphasic Printed Electrodes for High‐Fidelity on‐Skin Bioelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Micropatterned biphasic printed electrodes achieve unprecedented skin conformity and low impedance by combining liquid‐metal droplets with microstructured 3D lattices. This scalable approach enables high‐fidelity detection of ECG, EMG, and EEG signals, including alpha rhythms from the forehead, with long‐term comfort and stability.
Manuel Reis Carneiro   +4 more
wiley   +1 more source

Wireless Charging Technologies: Fundamentals, Standards, and Network Applications [PDF]

open access: yesIEEE Communications Surveys and Tutorials, 2015
Wireless charging is a technology of transmitting power through an air gap to electrical devices for the purpose of energy replenishment. The recent progress in wireless charging techniques and development of commercial products have provided a promising
Xiao Lu   +4 more
semanticscholar   +1 more source

Energy-Efficient Dual-Iteration Power Allocation for Two-Phase Relay System with Massive Antennas

open access: yesInternational Journal of Antennas and Propagation, 2014
This paper considers the scenario where multiple source nodes communicate with multiple destination nodes simultaneously with the aid of an amplify-and-forward relay equipped with massive antennas.
Long Zhao   +5 more
doaj   +1 more source

Passive security threats and consequences in IEEE 802.11 wireless mesh networks [PDF]

open access: yes, 2008
The Wireless Mesh Network (WMN) is ubiquitous emerging broadband wireless network. However, the open wireless medium, multi-hop multi-radio architecture and ad-hoc connectivity amongst end-users are such characteristics which increases the ...
Khan, S, Loo, KK, Mast, N, Silahuddin, A
core  

Rapid Diagnostics of Reconfigurable Intelligent Surfaces Using Space‐Time‐Coding Modulation

open access: yesAdvanced Functional Materials, EarlyView.
A fast reconfigurable‐intelligent‐surface (RIS) diagnostics method is proposed based on spatio‐temporal modulation with orthogonal codes. Theoretical analysis demonstrates a clear distinction in code channel power between normal and faulty elements. Simulations validate its feasibility under high fault ratios and varying receiving angles.
Yi Ning Zheng   +7 more
wiley   +1 more source

A Robust Dual‐mode Self‐Monitoring Battery Thermal Management System via Bilayer Structural Design

open access: yesAdvanced Functional Materials, EarlyView.
An adaptive dual‐mode material capable of both evaporative cooling and photothermal preheating is developed. It achieves a cooling efficiency of 53.9%, surpassing existing evaporative cooling counterparts, and a self‐monitoring capability, making it ideal for electric vehicles, portable electronics, and grid‐scale energy storage.
Shanchi Wang   +7 more
wiley   +1 more source

Dynamic Beamforming for Three-Dimensional MIMO Technique in LTE-Advanced Networks

open access: yesInternational Journal of Antennas and Propagation, 2013
MIMO system with large number of antennas, referred to as large MIMO or massive MIMO, has drawn increased attention as they enable significant throughput and coverage improvement in LTE-Advanced networks.
Yan Li, Xiaodong Ji, Dong Liang, Yuan Li
doaj   +1 more source

On distributed scheduling in wireless networks exploiting broadcast and network coding [PDF]

open access: yes, 2010
In this paper, we consider cross-layer optimization in wireless networks with wireless broadcast advantage, focusing on the problem of distributed scheduling of broadcast links. The wireless broadcast advantage is most useful in multicast scenarios.
Chen, Lijun, Cui, Tao, Ho, Tracey
core   +1 more source

Printing Nacre‐Mimetic MXene‐Based E‐Textile Devices for Sensing and Breathing‐Pattern Recognition Using Machine Learning

open access: yesAdvanced Functional Materials, EarlyView.
This study presents a Ti3C2Tx MXene/WPU nacre‐mimetic nanomaterial as a printable ink for direct‐write printing onto textiles‐based sensors. The resulting wearable device demonstrates high sensitivity, biocompatibility, and mechanical strength. Furthermore, NFC‐enabled humidity sensor produces time‐series data, which informs a machine learning ...
Lulu Xu   +6 more
wiley   +1 more source

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