Results 191 to 200 of about 95,222 (318)

Stress‐to‐Light Conversion in an Earth‐Abundant Oxide Semiconductor

Advanced Science, EarlyView.
Stress‐to‐light conversion in solids represents a unique photonic functionality, yet it has never been realized in a chemically simple and sustainable material. Here, we show that sustainable semiconductor ZnO exhibits strong near‐infrared (NIR) luminescence under elastic stress when defect‐engineered to stabilize the p‐type state.
Tomoki Uchiyama, Koki Otonari, Reona Omori, Guangfa Yang, Eiji Nishibori, Ying Chen, Xu‐Guang Zheng, Chao‐Nan Xu   +7 more
wiley   +1 more source

Rate Optimization of Intelligent Reflecting Surface-Assisted Coal Mine Wireless Communication Systems. [PDF]

Entropy (Basel)
Liu Y, Yang Z, Wang B, Xu Y.
europepmc   +1 more source

Application of wavelets and artificial neural network for indoor optical wireless communication systems

This study investigates the use of error control code, discrete wavelet transform (DWT) and artificial neural network (ANN) to improve the link performance of an indoor optical wireless communication in a physical channel.
Rajbhandari, Sujan
core  

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Editorial for Advanced Antennas for Wireless Communication Systems. [PDF]

Micromachines (Basel)
Upadhyaya T, Singh HS.
europepmc   +1 more source

Toward Long‐Term Reliable Human‐Machine Interaction: A Flexible, Breathable, and Self‐Powered Pressure Sensor System With Firefighting Validation

Advanced Science, EarlyView.
This work develops a breathable potentiometric self‐powered pressure sensor with good wearability, using a non‐woven fabric substrate and hydrogel electrolyte. The sensor is integrated into a five‐channel smart glove to acquire reliable hand motion signals, which are processed by a CNN for identity verification and smart vehicle control in human ...
Qilong Zhang, Zhao Yao, Jiaxu Liu, Yuxuan Hou, Zhongtao Zhang, Jingwei Xue, Leonid Chernogor, Nam Young Kim, Eun Seong Kim, Yuanyue Li, Yang Li   +10 more
wiley   +1 more source

Crypto-coding technique based on polar code and secret key generated from wireless channel characteristics for wireless communication systems. [PDF]

PLoS One
Van Linh D, Van Yem V, Thi Phuong Thao H.   +2 more
europepmc   +1 more source

Wireless Communication Systems [PDF]

, 2007
openaire   +1 more source

Structure and dynamics of wireless communication systems.

, 2013
Wireless networks are going through a fundamental change. User-deployed and self-organizing networks are becoming key technologies to meet the exponentially increasing requirements for capacity. This implies a shift from carefully planned networks, for which basic feedback control techniques suffice for maintaining stability and good performance ...
openaire   +2 more sources