Results 31 to 40 of about 42,492 (267)

PAM-8 IM/DD Transmission Based on Modified Lookup Table Nonlinear Predistortion

IEEE Photonics Journal, 2018
In this paper, a modified lookup table (LUT) nonlinear predistortion method is proposed. With the modified LUT method, the number of patterns and the computational complexity can be reduced by half with a similar system performance comparing with normal ...
Jiao Zhang, Pengqi Gou, Miao Kong, Kaibo Fang, Jiangnan Xiao, Qi Zhang, Xiangjun Xin, Jianjun Yu   +7 more
doaj   +1 more source

A Four-leaf Clover-shaped Coding Metasurface For Ultra-wideband Diffusion-like Scattering

Leida xuebao, 2021
In this paper, a novel four-leaf clover-shaped coding metasurface is proposed and applied to achieve an ultra-wideband diffusion-like scattering.
Saifullah YASIR, Guomin YANG, Feng XU
doaj   +1 more source

Gradient‐Conductivity Architecture Enables Synchronous Enhancement of Sensitivity and Detection Range in Multifunctional All‐Paper Sensors

Advanced Functional Materials, EarlyView.
A gradient‐engineered all‐paper sensor is fabricated by integrating MXene and in situ grown AgNPs within hierarchical cellulose networks. The device breaks the sensitivity–detection range trade‐off through cascaded conductive pathways, enabling ultrahigh pressure sensitivity, humidity–pressure decoupled dual‐mode sensing, and outstanding EMI shielding,
Ao Li, Jun Xu, Dezhong Xu, Zhaohui Zhang, Jiyi Li, Daxian Cao, Kefu Chen, Mizi Fan   +7 more
wiley   +1 more source

NPA2Net: A Nested Path Aggregation Attention Network for Oriented SAR Ship Detection

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
Ship detection in synthetic aperture radar (SAR) images is crucial for various applications in both civilian and military domains. In recent years, there has been substantial progress in SAR ship detection, largely driven by advancements in deep learning-
Chunjie Zhang, Peng Liu, Haipeng Wang, Yaqiu Jin   +3 more
doaj   +1 more source

Rapid Microwave Plasma Engineering of HfO2/C@C Core‐Shell Fibrous Membrane Toward Flexible High‐Performance Electromagnetic Wave Absorption

Advanced Functional Materials, EarlyView.
Rapid microwave plasma torch engineering tunes crystal phases, carbon graphitization and oxygen‐vacancy defects in HfO2/C@C core‐shell fibrous membranes. Synergistic multi‐loss effects optimize impedance matching to deliver −65.75 dB reflection loss and a 7.37 GHz effective bandwidth for flexible electromagnetic wave absorption.
Qichao Ding, Limeng Song, Wei Li, Jiangtao Hao, Xuewen Jiang, Mengru Li, Xinglai Yuan, Gang Wang, Yanqiu Zhu, Mi Tian, Hailong Wang, Hongxia Li, Biao Zhao, Rui Zhang, Bingbing Fan   +14 more
wiley   +1 more source

3D Virtual Urban Scene Reconstruction From a Single Optical Remote Sensing Image

IEEE Access, 2019
This paper presents a low-cost and efficient method for 3D virtual urban scene reconstruction based on multi-source remote sensing big data and deep learning.
Suo Li, Zhanyu Zhu, Haipeng Wang, Feng Xu   +3 more
doaj   +1 more source

Comparison of Geometrically Shaped and Probabilistically Shaped Bit-Loading DMT for Optical Interconnect System

IEEE Photonics Journal, 2020
We experimentally demonstrate the transmission performance of the bit-loading discrete multi-tone (DMT) signal in intensity modulation and direct detection (IM-DD) system with a transmission distance of 2km and a net data rate of 108-Gb/s by two ...
Junjie Ding, Jiao Zhang, Jianjun Yu
doaj   +1 more source

Few-Shot Object Detection With Self-Adaptive Global Similarity and Two-Way Foreground Stimulator in Remote Sensing Images

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Few-shot object detection (FSOD) aims to localize and recognize potential objects of interest only by using a few annotated data, and it is beneficial for remote sensing images (RSIs) based applications, such as urban monitoring. Previous RSIs-based FSOD
Yuchen Zhang, Bo Zhang, Bin Wang
doaj   +1 more source

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Integrated sensing and communication based on space-time-coding metasurfaces

Nature Communications
Programmable metasurfaces (PMs), also called reconfigurable intelligent surfaces (RISs), are planar structures capable of dynamically manipulating electromagnetic waves in real-time.
Xiao Qing Chen, Lei Zhang, Yi Ning Zheng, Shuo Liu, Zhuo Ran Huang, Jing Cheng Liang, Marco Di Renzo, Vincenzo Galdi, Tie Jun Cui   +8 more
doaj   +1 more source