Results 41 to 50 of about 66,312 (263)

Multi-Carrier Waveforms and Multiple Access Strategies in Wireless Networks: Performance, Applications, and Challenges

IEEE Access, 2022
Current generation mobile communications require high-quality services. Adopting multiple access (MA) and multi-carrier waveforms potentially enhances the quality of services offered to end-users.
Tewelgn Kebede, Yihenew Wondie, Johannes Steinbrunn, Hailu Belay Kassa, Kevin T. Kornegay   +4 more
doaj   +1 more source

Designing Physical Unclonable Functions From Optically Active Materials

Advanced Materials, EarlyView.
Assigning unforgeable “fingerprints” to manufactured goods is a key strategy to fight global counterfeiting. Optical physical unclonable functions (PUFs) are chemically generated random patterns of optically active materials serving as unique authenticators.
Maxime Klausen, Junfang Zhang, Molly M. Stevens   +2 more
wiley   +1 more source

An Ultra‐Sub‐Wavelength Microwave Polarization Switching Antenna for Covert Communication Implemented With Directed Surface Acoustic Waves in an Artificial Multiferroic Magnonic Crystal

Advanced Materials Technologies, EarlyView.
A surface acoustic wave (SAW) launched in a two‐dimensional periodic array of magnetostrctive nanomagnets on a piezoelectric substrate excites spin waves in the nanomagnets which radiate electromagnetic waves in space. The polarization of the emitted beam in particular directions and at particular frequencies can be switched between horizontal and ...
Raisa Fabiha, Erdem Topsakal, Supriyo Bandyopadhyay   +2 more
wiley   +1 more source

Orthogonal Frequency Division Multiplexing With Generalized Joint Index Modulation

IEEE Open Journal of the Communications Society
Orthogonal frequency division multiplexing with index modulation (OFDM-IM) is a promising multi-carrier technique for next generation wireless communication networks.
Zeng Hu, Yanke Che, Jing Wang, Xuhong Peng, Chaobo He, Dehuan Wan, Yun Liu, Ting Wu   +7 more
doaj   +1 more source

Demonstration of 3D‐Printed Optical Antennas for High‐Speed Optical Wireless Communication Using Market‐Ready Materials

Advanced Materials Technologies, EarlyView.
The feasibility of 3D‐printed optical antennas using commercial, non‐optical materials for Optical Wireless Communications (OWC) is demonstrated. This study combines spectral analysis, anisotropy effects, and telecom‐relevant optical measurements, revealing promising performance and novel insights for low‐cost, customizable photonic components in ...
Mauro Aresti, Marco Meucci, Paolo Foggi, Caterina Credi, Satoshi Iketani, Cristiana Lofrumento, Jacopo Catani   +6 more
wiley   +1 more source

Non‐linear modelling and distortion compensation in optical Fast‐orthogonal frequency division multiplexing systems [PDF]

, 2023
Luis Carlos Vieira, Waseem Ozan, John Mitchell, Izzat Darwazeh   +3 more
openalex   +1 more source

Anisotropic Second‐ and Third‐Harmonic Hermite–Gaussian Beam Generation with NbOI2 Holograms

Advanced Photonics Research, EarlyView.
Anisotropic second‐ and third‐harmonic Hermite–Gaussian (HG) beam generation is demonstrated with ultrathin NbOI2 grating holograms to produce the nonlinear HG01 and HG10 modes with high anisotropy ratios. The relative magnitudes of the second‐ and third‐order nonlinear susceptibility tensor elements of NbOI2 crystal are extracted. These demonstrations
Jayanta Deka, Jie Gao, Xiaodong Yang
wiley   +1 more source

Orthogonal Chirp Division Multiplexing for Underwater Acoustic Communication

Sensors, 2018
The objective of this study is to investigate a novel Underwater Acoustic Communication (UWAC) system based on a modulated chirp signal termed as Orthogonal Chirp Division Multiplexing (OCDM).
Yiqi Bai, Pierre-Jean Bouvet
doaj   +1 more source

CLAE: A High‐Fidelity Nanopore Sequencing Strategy for Read‐Level Viral Variant Detection and Environmental RNA Virus Discovery

Advanced Science, EarlyView.
High‐fidelity Nanopore sequencing offers a cost‐effective, portable path to uncovering viral dark matter in complex environments—but suffers from severe read‐length bias, low throughput, and limited accuracy. This study traces these limitations to core biochemical barriers and introduces CLAE, a foundational high‐fidelity platform that enables accurate,
Hannah Yu, Sarah Golconda, Ga‐Eun Lee, Dantong Xue, Guillermo Domínguez‐Huerta, James M. Wainaina, Benjamin Bolduc, Shashanka Murthy, Shihyoung Kim, Seth Faith, Shan‐Lu Liu, Jiyoung Lee, Michael Oglesbee, Matthew B Sullivan, Sanggu Kim   +14 more
wiley   +1 more source

Modelling the satellite communication links with orthogonal frequency-division multiplexing

Transport, 2016
Global technologies of data transmission in real time are developing constantly. Therefore, modelling of messages transmission through satellite constellations is an actual problem.
Volodymir Kharchenko, Bo Wang, Andrii Grekhov, Anna Leschenko   +3 more
doaj   +1 more source