Results 141 to 150 of about 9,359,534 (311)

Space‐Time Metasurface Antenna Enabled High‐Dimensional Electromagnetic Modulation for Intrinsic Physical Layer Security

Advanced Science, EarlyView.
The concept of high‐dimensional EM modulation using the STMA for physical layer secure communication is illustrated in figure. The STMA consists of a series of programmable unit cells, with 1‐bit reconfigurable phase states (0/π). The STMA is excited by a monochromatic continuous wave (CW) at frequency fc and controlled by a field‐programmable gate ...
Xinyu Fang, Yiqing Sun, Chenfeng Yang, Siran Wang, Zheng Xing Wang, Kaixu Wang, Geng‐Bo Wu   +6 more
wiley   +1 more source

Performance optimization of nonlinear EH technology in green cognitive WPCN

Scientific Reports
A green cognitive Wireless Powered Communication Network (WPCN) is studied in this paper, which uses nonlinear energy harvesting technology and serves as a liner network for the main peer-to-peer communication pathway. The network is composed of a Hybrid
Huajun Chen, Lina Yuan, Linjie Wang, Jing Gong   +3 more
doaj   +1 more source

Hierarchical Physical‐Cyber Encryption via Metasurface‐Encoded Holographic Keys

Advanced Science, EarlyView.
ABSTRACT Physical‐layer encryption based on metasurfaces has emerged as a promising alternative to conventional algorithmic cryptography by embedding security into physical processes. However, most existing metasurface‐based encryption schemes operate within single‐stage or static frameworks, where correct physical illumination directly reveals the ...
Zhen Liu, Changhong Dai, Wei Zhu, Ruisheng Yang, Bohan Zhang, Lei Zhang, Bobo Du, Shengxiang Wang, Guangwei Hu   +8 more
wiley   +1 more source

Correction to: Power and Resource Allocation in Wireless Communication Network [PDF]

Wireless Personal Communications, 2021
Mohsin Nazir, Aneeqa Sabah, Sana Sarwar, Azeema Yaseen, Anca Jurcut   +4 more
openaire   +2 more sources

Highly Repeatable Fibrous Crack‐Based Strain Sensor for Multichannel Continuous Tremor Monitoring in Parkinson's Disease and Essential Tremor

Advanced Science, EarlyView.
This study proposes a patch‐type tremor monitoring system based on high‐repeatable fibrous crack‐based strain sensor, capable of simultaneously measuring tremor in multiple locations such as thumb, index, and wrist. Through clinical trials involving Parkinson's disease and essential tremor patients, the proposed system demonstrates its potential as a ...
Chiwon Song, Chan Park, Juyoun Lee, Hojoong Kim, Jeongbeom Kang, Byeongjun Lee, Cheoljeong Park, Jungmin Kim, Haran Lee, Yoon Jae Lee, Min‐Kyung Yeo, Woon‐Hong Yeo, Seong J. Cho   +12 more
wiley   +1 more source

Network Coding-aware Lifetime Maximal routing in Multi-hop Static Wireless Ad-hoc Networks

Journal of Communications Software and Systems, 2014
In this paper, we address the issue of maximizing the lifetime of a static wireless ad-hoc network wherein the nodes are battery powered and have limited energy.
Rigil Salim, Rajarshi Roy
doaj  

Soft, Multi‐Wavelength Photoplethysmography Enables Reliable Neonatal Blood Pressure Monitoring Via Error Stratification

Advanced Science, EarlyView.
A soft hybrid multi‐wavelength PPG wearable acquires neonatal signals. Synchronized PPG and invasive ABP data are segmented into fixed windows. A 1D‐EfficientNet model predicts segment‐level SBP and DBP. Model performance is examined with retrospective subgroup analysis across acquisition conditions.
Wenqi Shi, Lanlan Mi, Jiarong Chen, Biao Liu, Min Wang, Zisheng Dai, Bin Liu, Ruize Gao, Yunfeng Lin, Weiwei Guo, Guoxing Wang, Wenyi Luo, Cheng Chen   +12 more
wiley   +1 more source

Adaptive wireless-powered network based on CNN near-field positioning by a dual-band metasurface

Nature Communications
With the improvement of industry, the connectivity of electronic devices gradually shift from wired to wireless. As a solution for power delivery, the non-contact power transfer holds promising ways to charge for moving terminals, enabling battery-free ...
De Xiao Xia, Jia Qi Han, Ya Jie Mu, Lei Guan, Xin Wang, Xiang Jin Ma, Li Hao Zhu, Tian Guang Lv, Hai Xia Liu, Yan Shi, Long Li, Tie Jun Cui   +11 more
doaj   +1 more source

Review of Gastrointestinal Capsule Robots: Materials, Actuation, Diagnostics, and Therapeutics

Advanced Science, EarlyView.
This review examines gastrointestinal capsule robots through a systems engineering lens, covering shell materials, actuation and localization strategies, diagnostic modalities, therapeutic interventions, and commercialization status. By mapping the complete technological chain from fabrication to clinical deployment, this work identifies critical gaps ...
Zengsheng Li, Zhongguo Ren, Yiliang Lin, Xianfeng Xia, Tianlong Li, Kai Fung Chan, Philip Wai Yan Chiu, Wei Peng Yong, Mengmeng Sun   +8 more
wiley   +1 more source

Enhancing TCP delivery over wireless networks

, 2009
Wireless communication has become a significant life style in the daily use. The wireless communication can be used to extend the service of wired communication.
Lien, Kai-Wen
core   +1 more source