Results 1 to 10 of about 52,732 (293)

A Measurement Based Shadow Fading Model for Vehicle-to-Vehicle Network Simulations

open access: yesInternational Journal of Antennas and Propagation, 2015
The vehicle-to-vehicle (V2V) propagation channel has significant implications on the design and performance of novel communication protocols for vehicular ad hoc networks (VANETs).
Taimoor Abbas   +3 more
doaj   +3 more sources

Measurement, data analysis and modeling of electromagnetic wave propagation gain in a typical vegetation environment. [PDF]

open access: yesPLoS ONE, 2023
This paper takes the specific environment covered by vegetation as the research object, carries out modeling and analysis, takes the large-scale fading model of wireless channel as the basis of data processing, researches the transmission law of ...
Chaoyi Zhang   +5 more
doaj   +3 more sources

Joint Power Allocation and Hybrid Beamforming for Cell-Free mmWave Multiple-Input Multiple-Output with Statistical Channel State Information [PDF]

open access: yesSensors
Cell-free millimeter wave (mmWave) multiple-input multiple-output (MIMO) can effectively overcome the shadow fading effect and provide macro gain to boost the throughput of communication networks.
Jiawei Bai   +3 more
doaj   +2 more sources

Investigation of photoinduced deterioration in shadow puppet artifacts collected from the National Shadow Pupperty Museum in Chengdu, China [PDF]

open access: yesHeliyon
Shadow puppet artifacts are a special type of cultural heritage made from animal skin, possessing significant cultural and artistic value. However, there is insufficient attention to the scientific preservation of these artifacts, and systematic research
Xiangjun Zhang   +3 more
doaj   +2 more sources

Composite Fading Models based on Inverse Gamma Shadowing: Theory and Validation [PDF]

open access: yes, 2021
We introduce a general approach to characterize composite fading models based on inverse gamma (IG) shadowing. We first determine to what extent the IG distribution is an adequate choice for modeling shadow fading, by means of a comprehensive test with ...
Lopez-Martinez, F. Javier   +1 more
core   +3 more sources

Erratum: Spectrum Map Construction Based on Optimized Sensor Selection and Adaptive Kriging Model [PDF]

open access: yesRadioengineering, 2023
In the published version of the paper, there is an error in Fig. 7. Figure 7 should be the results of different construction methods when "the standard deviation of shadow fading is 3 dB", but in the published version it is the result of different ...
Z. Ding   +5 more
doaj  

Network coverage using MI waves for underwater wireless sensor network in shadowing environment

open access: yesIET Microwaves, Antennas & Propagation, 2021
In high permittivity media, such as underground, underwater, and biological tissues the electromagnetic (EM) wave fails to provide reliable communication due to high path loss.
Sunandita Debnath
doaj   +1 more source

Path Loss Model Based on Machine Learning Using Multi-Dimensional Gaussian Process Regression

open access: yesIEEE Access, 2022
For beyond fifth-generation (5G) and future wireless communications, spatial consistency that represents the correlation between propagation channel characteristics in close proximity has become one of the major issues in channel modeling to describe ...
Ki Joung Jang   +6 more
doaj   +1 more source

Spectrum Map Construction Based on Optimized Sensor Selection and Adaptive Kriging Model [PDF]

open access: yesRadioengineering, 2022
Spectrum map (SM) is an important tool to reflect the spectrum usage in the electromagnetic environment. To address the problems of low precision and poor efficiency in the SM construction, this paper develops a novel SM construction approach based on ...
Z. Ding   +5 more
doaj  

Shadow fading cross-correlation of multi-frequencies in curved subway tunnels [PDF]

open access: yes, 2014
Radio propagation characteristics in curved tunnels are important for designing reliable communications in subway systems. In this paper, shadow fading is characterized, and cross-correlation property of shadow fading for different frequency bands is ...
Briso Rodríguez, César   +4 more
core   +1 more source

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