Results 131 to 140 of about 55,834 (286)

Centralised dynamic spectrum sharing in wireless networks.

, 2018
The static method of allocating fixed blocks of spectrum, over a considerable period of time is gradually giving way to a more flexible method of using the spectrum.
Salami, G. K.
core   +1 more source

Multimodal Data‐Driven Microstructure Characterization

Advanced Engineering Materials, EarlyView.
A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang, Santiago Benito, Özge Özgün, Sebastian Weber, Markus Stricker   +4 more
wiley   +1 more source

Spectrum Sharing Methods in Coexisting Wireless Networks [PDF]

, 2012
Radio spectrum, the fundamental basis for wireless communication, is a finite resource. The development of the expanding range of radio based devices and services in recent years makes the spectrum scarce and hence more costly under the paradigm of ...
Siddique, Mohammad Muttakin
core  

Dynamic spectrum sharing in hybrid satellite-terrestrial systems

, 2018
The focus of this chapter is on dynamic spectrum sharing in hybrid satellite-terrestrial systems. We start by classifying the scenarios for those systems.
Höyhtyä, Marko, Boumard, Sandrine; id_orcid   +1 more
core   +1 more source

Toward Fair Spectrum Sharing: An Enhanced Fixed Waiting Time Model for LAA and Wi-Fi Networks Coexistence

IEEE Access
This study addresses the challenge of fair spectrum sharing in unlicensed bands for Licensed Assisted Access (LAA) and Wi-Fi coexistence. Existing methods, particularly the 3GPP Category 4 Listen Before Talk (Cat 4 LBT) algorithm, fail to fully meet the ...
Moawiah Alhulayil, Miguel Lopez-Benitez, Mohammed Alammar, Abdulrahman Al Ayidh   +3 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Research on key technologies for spectrum sharing in satellite-terrestrial integrated networks

Dianxin kexue
With the increasing demand for ubiquitous broadband communication and the continuous evolution of space-terrestrial integrated communication technology, satellite communication and terrestrial mobile communication networks have gradually shifted from ...
YI Pengfei, DU Qin, ZHANG Peng, WU Zehua, WANG Rui, CHENG Jinxia, DENG Wei   +6 more
doaj  

Opportunistic Throughput Optimization in Energy Harvesting Dynamic Spectrum Sharing Wireless Networks

IEEE Open Journal of the Communications Society
We investigate opportunistic transmissions in a time-slotted wireless network, emphasizing constraints arising from finite durations allocated to various network operations and the availability of energy for these operations.
Amirhossein Taherpour, Abbas Taherpour, Tamer Khattab, Mohamed Abdallah   +3 more
doaj   +1 more source

Encyclopedia of 2D β′‐In2Se3 Growth Using Chemical Vapor Deposition: The Effects of Synthesis Parameters Onto Material Quality

Advanced Engineering Materials, EarlyView.
A distinct semi‐confined inner‐tube chemical vapor deposition geometry enables reproducible, large‐area growth of phase‐pure 2D β′‐In2Se3 from InI + Se precursors. Engineering local vapor transport and optimizing precursor delivery and temperature–time conditions yield uniform continuous films.
Dasun P. W. Guruge, P. Sanju S. Panawala, Joseph F. S. Fernando, Zhenhuan Chen, Chao Zhang, Dong‐Chen Qi, Liangzhi Kou, Konstantin L. Firestein, Dmitri V. Golberg   +8 more
wiley   +1 more source

Designing Polymer Nanocomposites for X‐Ray Shielding: Mechanisms, Architectures, and Scalable Processing

Advanced Engineering Materials, EarlyView.
This review highlights advances in lightweight, lead‐free polymer nanocomposites for diagnostic X‐ray shielding. By linking filler chemistry, dispersion, architecture, and photon interaction mechanisms, it establishes structure–performance relationships guiding material design.
Aklilu G. Messele, Hossein Ipakchi, Tizazu H. Mekonnen   +2 more
wiley   +1 more source