Results 101 to 110 of about 161,361 (250)

Directive Antenna Clutter Loss in Slant Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper investigates the development of a clutter loss model specifically for slant paths involving directive antennas. Conventionally, clutter loss is characterized by using isotropic antennas to facilitate standard link budget calculations via single antenna gain values.
Fernando Pérez Fontán, Vicente Pastoriza‐Santos, Fernando Machado Domı́nguez, Thomas Prechtl, Pavel Pechac   +4 more
wiley   +1 more source

Genetic algorithm-based PTS with CNN for PAPR and BER reduction in FBMC systems under fading channels

Ain Shams Engineering Journal
The Filter Bank Multicarrier (FBMC) is a promising candidate for next-generation wireless systems because of its superior spectral efficiency and resilience to synchronization errors.
Arun Kumar, Aziz Nanthaamornphong
doaj   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source

Coded Modulation Assisted Radial Basis Function Aided Turbo Equalisation for Dispersive Rayleigh Fading Channels

, 2004
In this contribution a range of Coded Modulation (CM) assisted Radial Basis Function (RBF) based Turbo Equalisation (TEQ) schemes are investigated when communicating over dispersive Rayleigh fading channels.
Yee, M. S., Ng, S. X., Hanzo, L.
core   +1 more source

Programmable Porosity in Polymers via Microfluidic Templating and 3D Printing

Small Methods, EarlyView.
Fluid templating is a powerful way to produce porous polymers. Microfluidic technologies enable fine control over the dimension and packing of bubbles and droplets. Combined with additive manufacturing, microfluidic templating enables the creation of polymeric functionally graded porous materials in which both porosity and three‐dimensional geometry ...
Federico Serpe, Roberta Angelini, Andrea Barbetta, Vanessa Rosciardi   +3 more
wiley   +1 more source

Integrated Wireless Multimedia Turbo-Transceiver Design Approaching the Rayleigh Channel's Capacity: Interpreting Shannon's Lessons in the Turbo-Era

, 2004
Claude Shannon's pioneering work quantified the performance limits of communications systems operating over classic wireline Gaussian channels. However, his source and channel coding theorems were derived for a range of idealistic conditions, which may ...
Ng, S. X., Chung, J. Y., Hanzo, L.
core   +1 more source

A Comparison Between Recursive Least-Squares (RLS) and Extended Recursive Least-Squares (E-RLS) for Tracking Multiple Fast Time Variation Rayleigh Fading Channel

Al-Khawarizmi Engineering Journal, 2017
In order to select the optimal tracking of fast time variation of multipath fast time variation Rayleigh fading channel, this paper focuses on the recursive least-squares (RLS) and Extended recursive least-squares (E-RLS) algorithms and reaches the ...
Ali Salah Mahdi
doaj  

Progress in Explosion Mechanisms and Prevention Technologies for Direct Chill Casting Aluminum Melt Upon Water Contact: A Review

Safety Science and Technology, EarlyView.
Molten aluminum–water explosion triggered by leakage remains the core unresolved safety hazard hindering safe production in aluminum direct chill casting. This review summarizes its explosion mechanism, key influencing factors, prevention technologies, existing gaps, and prospects of intelligent multi‐technology integrated explosion‐proof systems ...
Min Wang, Kang Yang, Jiang Dong, Lidong Xing, Bing Chen, Changke Chen   +5 more
wiley   +1 more source

The Origins of Ploem's Filter Cube: A Pandora's Box

Journal of Microscopy, EarlyView.
Abstract Ploem's filter cube, central to modern epifluorescence microscopy, integrates three matched optical components: an excitation filter, an emission filter, and a dichroic mirror. Together, these elements enable the separation of excitation and emission light paths, producing high‐contrast fluorescence images.
Jack Gordon, Kaleah Balcomb, Vinod Maseedupally, Maitreyee Roy   +3 more
wiley   +1 more source

Translation and discussion of Leon Brillouin's 1922 paper titled: Diffusion of light and X‐rays by a transparent homogeneous body: Influence of thermal agitation

Journal of Microscopy, EarlyView.
Abstract In 1922, Léon Brillouin introduced the idea of light scattering from thermal fluctuations, in a paper titled: ‘Diffusion de la lumière et des rayons X par un corps transparent et homogéne, influence de l'agitation thermique’. Brillouin's mathematical treatment elegantly unifies principles from thermodynamics, optics and electromagnetic theory (
Pierre Bouvet, Kareem Elsayad
wiley   +1 more source