Results 121 to 130 of about 178,706 (309)
Advanced Science, EarlyView.Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Ranjan Kumar Patel +3 more
wiley +1 more source
Combining 5G New Radio, Wi-Fi, and LiFi for Industry 4.0: Performance Evaluation
SensorsFifth-generation mobile networks (5G) are designed to support enhanced Mobile Broadband, Ultra-Reliable Low-Latency Communications, and massive Machine-Type Communications.
Jorge Navarro-Ortiz +6 more
doaj +1 more source
Mobile broadband: Accountability, populism, and misinformation [PDF]
Mobile broadband has enhanced accountability and boosted political turnover by reducing incumbents' electoral advantage. Mobile broadband has also boosted populist movements, widened partisan divides, and fueled misinformation consumption, weakening ...
Guriev, Sergej +3 more
core
Configuración de transporte multicast IP con calidad de servicio en arquitecturas de red con plano de control IMS [PDF]
, 2008 El proceso de estandarización de la tecnología UMTS como estándar global 3G ha resultado en el desarrollo del Subsistema Multimedia IP (IP Multimedia Subsystem, IMS).
Vidal Fernández, Iván
core
Polymorphic Superparaelectric Engineering Boosting Energy Storage Capacity in BaTiO3‐Based Ceramics
Advanced Science, EarlyView.Herein, Ca2+ incorporation promotes the coexistence of CaTiO3‐/BaTiO3‐derived paraferroelectric states, stabilizing cubic‐orthorhombic‐tetragonal polymorphic superparaelectric phases. This minimizes polarization energy barriers, facilitating full polarization saturation without compromising efficiency.
Pan Liu +9 more
wiley +1 more source
Efficiency of channel codes for different fading models in 5G enhanced mobile broadband scenario
International Journal of Electrical and Computer Engineering (IJECE)In urban environments, 5th generation (5G) signals are subject to interference, multiple propagation and thermal noise, resulting in a significant amount of errors. In this regard, channel coding is applied, which allows to increase the reliability of the transmitted message.
Khmelevsky, Mikhail, Kazakov, Gennady
openaire +1 more source
A Brief History of Mobile Telecommunication in Europe [PDF]
Since the introduction of mobile telephony in the early fifties in Europe, US and Japan the demand for this service exploded. It seems that the latent demand for mobile telecommunication services for decade's continued to be very strong.
Dunnewijk, Theo, Hultén, Staffan
core
Advanced Science, EarlyView.Multidimensional laser‐induced graphene (LIG) spanning from 0D to 3D architectures is comprehensively reviewed for multifunctional biomedical platforms, including biosensing, theranostics, and bioactive interface applications, which highlights its potentials for point‐of‐care diagnostics, wearable health monitoring, smart drug delivery, and tissue ...
Li Zhang +3 more
wiley +1 more source
Proposta de um esquema MIMO-OFDM com máxima diversidade em frequência para canais variantes no tempo [PDF]
, 2007 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.O projeto de sistemas de comunicação sem fio, com o propósito de minimizar a probabilidade de erro de bits, é um ...
Yoshimura, Ricardo Seiti
core
Advanced Science, EarlyView.Hierarchical PP–LSR107–BaTiO3 nanocomposite films are fabricated by one‐step extrusion and stretching for roll‐to‐roll manufacture, combining high energy storage and processing flexibility. LSR107 surrounds BaTiO3‐rich regions, locating amorphous PP, decreasing defects, and introducing deep traps that homogenize the electric field and suppress charge ...
Yi Gao +14 more
wiley +1 more source