Results 51 to 60 of about 4,757,560 (195)

Low-Complexity Autocorrelation-Based OFDM Detection Under Sub-Nyquist Sampling

IEEE Access
Sub-Nyquist sampling has emerged as an attractive approach for reducing the hardware complexity and computational burden associated with orthogonal frequency division multiplexing (OFDM) spectrum sensing. However, sampling below the Nyquist rate modifies
Farwa Ahmed, Pat Chambers, Mathini Sellathurai, Paul O'Leary, Darren F. Kavanagh   +4 more
doaj   +1 more source

A Sub-Nyquist Radar Electronic Surveillance System

IEEE Access, 2018
The modulated wideband converter (MWC) is well-known for a sub-Nyquist wideband sampling capability based on compressed sensing (CS) theory. In this paper, our goal is to use the MWC as a base to design a sub-Nyquist radar electronic surveillance (ES ...
Jeong Park, Jehyuk Jang, Sanghun Im, Heung-No Lee   +3 more
doaj   +1 more source

Ghost edge detection based on HED network

Frontiers of Optoelectronics, 2022
In this paper, we present an edge detection scheme based on ghost imaging (GI) with a holistically-nested neural network. The so-called holistically-nested edge detection (HED) network is adopted to combine the fully convolutional neural network (CNN ...
Shengmei Zhao, Yifang Cui, Xing He, Le Wang   +3 more
doaj   +1 more source

Defect‐Driven Charge Separation in Ba‐Doped SrTiO3: Correlating Photoelectrochemical Performance With Dye‐Selective Photocatalysis

Advanced Materials Interfaces, EarlyView.
Ba‐doped SrTiO3 perovskites establish a direct correlation between photoelectrochemical activity and photocatalytic performance. Optimized Ba0.5Sr0.5TiO3 exhibits enhanced charge separation, photocurrent generation, and visible‐light‐driven dye degradation through defect‐induced oxygen vacancies and lattice distortion.
Sagar A. Nikam, Somnath Ladhane, Vikas P. Mhaske, Gotan H. Jain, Sandesh R. Jadkar, Shashikant P. Patole, Ganesh E. Patil   +6 more
wiley   +1 more source

Property Investigation on the Additive White Gaussian Noise After Sub-Nyquist Sampling

IEEE Access, 2019
The sub-Nyquist sampling (SNS) has emerged as an appealing technique for wideband signal sampling and has found its applications in many areas, such as, cognitive radios, radar and medical imaging, etc..
Tierui Gong, Zhifeng Liu, Chuang Xie, Zhijia Yang   +3 more
doaj   +1 more source

Study of sub-nyquist sampling and noise folding effect

, 2020
Sub-Nyquist sampling, sampling below Nyquist rate, was introduced to reduce the computational load and storage space caused when adhering to the Nyquist-Shannon sampling theorem. Studies over the years resulted in different schemes to achieve sub-Nyquist
Sugunthan, T.
core  

Sub-Nyquist Rate ADC Sampling in Digital Relays and PMUs: Advantages and Challenges

, 2016
Data acquisition unit is the basic building block of any power system protection and monitoring device. Operating principle of data acquisition unit heavily depends on the Nyquist theory.
Das, Sarasij, Sarasij Das
core   +1 more source

Binder‐Free Direct Ink Writing of Li6.4La3Zr1.4Ta0.6O12 Garnet Electrolytes for All‐Solid‐State Batteries

Advanced Materials Interfaces, EarlyView.
Polymer binders and thick pressed LLZTO pellets limit all‐solid‐state battery integration through grain‐boundary carbon and high ohmic losses. A binder‐free capillary suspension ink is direct‐ink‐written and sintered into 254 μm$\mu{\rm m}$, 95.8%‐dense Ta‐stabilized LLZTO with 17.3 mS cm−1$\text{cm}^{-1}$ bulk conductivity, enabling thinner ...
Sri Vaishnavi Thummalapalli, Xiao Sun, Dhanush Patil, Ian Doran, Venkat Kamavaram, Ganesh Arumugam, Kenan Song, Arunachala Nadar Mada Kannan   +7 more
wiley   +1 more source

Life‐Like Ferrous Oxide Microspheres from Kombucha

Advanced Materials Interfaces, EarlyView.
Kombucha bacterial cellulose, sodium alginate, and ferrous nitrate self‐assemble into membrane‐enclosed iron oxide microspheres. These microspheres bud daughter vesicles, sustain 24‐h electrochemical oscillations, and filter theta‐band signals.
Panagiotis Mougkogiannis, Anna Nikolaidou, Andrew Adamatzky   +2 more
wiley   +1 more source

2D Hierarchical Black Phosphorus‐Mn2O3 Heterostructured Composites for High‐Performance Flexible Supercapacitors

Advanced Materials Interfaces, EarlyView.
A sonochemical strategy constructs an ex situ 2D hierarchical black phosphorus–Mn2O3 heterostructure, enabling intimate interfacial coupling, enhanced charge transport, and improved electrochemical stability. The optimized BPM‐37.5% electrode delivers 466 F g−1 with 84% retention after 8000 cycles, while the flexible device exhibits high areal energy ...
Sowmiya Selvaraj, Anand Sreekantan Thampy   +1 more
wiley   +1 more source