Results 21 to 30 of about 52,732 (293)

A Double-Shadowed Rician Fading Model: A Useful Characterization [PDF]

open access: yes2019 22nd International Symposium on Wireless Personal Multimedia Communications (WPMC), 2019
In this paper, we provide an alternative characterization for format 1 of the recently proposed double shadowed Rician fading model. Unlike the original definition, both the dominant component and the rms signal are impacted by Nakagami-m processes. For this exposition, we derive analytical expressions for the envelope probability density function (PDF)
Browning, Jonathan W.   +4 more
openaire   +4 more sources

Wayang Kulit Kelantan: The Challenges Between Traditional and Digital Media

open access: yesArte, Individuo y Sociedad, 2012
Traditional Malay theatre arts such as Wayang Kulit Kelantan or Shadow Play puppet Kelantan in Malaysia has been a form of entertainment. Unfortunately, this shadow play puppet has lost it touch and is slowly fading among the society in Malaysia.
Dahlan Bin Abdul Ghani
doaj   +1 more source

Millimeter Wave Based Real-Time Sag Measurement and Monitoring System of Overhead Transmission Lines in a Smart Grid

open access: yesIEEE Access, 2020
Overhead transmission line sag is a crucial parameter that needs to be measured for safe and efficient power transmission. Due to this reason, real time measurement of transmission line sag is necessary in a smart power grid. The ability of smart grid to
Ayman Uddin Mahin   +4 more
doaj   +1 more source

Modeling and Performance Optimization of Unmanned Aerial Vehicle Channels in Urban Emergency Management

open access: yesISPRS International Journal of Geo-Information, 2021
With the development of smart cities, the use of unmanned aerial vehicles (UAVs) for interactive information exchange between air and ground can provide effective support for the deployment of emergency work.
Bing Han   +4 more
doaj   +1 more source

Comparison of predictions from a ray tracing microcellular model with narrowband measurements [PDF]

open access: yes, 1997
In this paper predictions from a 3-D 'image-based' ray tracing model for microcellular environments are compared with three sets of narrowband measurements performed in a typical urban area. The comparisons illustrate that good agreement can be obtained,
Athanasiadou, G, McGeehan, JP, Nix, AR
core   +2 more sources

The Double Shadowed κ-µ Fading Model

open access: yes2019 International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), 2019
In this paper, we introduce a new fading model which is capable of characterizing both the shadowing of the dominant component and composite shadowing which may exist in wireless channels. More precisely, this new model assumes a κ-µ envelope where the dominant component is fluctuated by a Nakagami-m random variable (RV) which is preceded (or succeeded)
Simmons, Nidhi   +5 more
openaire   +3 more sources

Inter- and Intrasite Correlations of Large-Scale Parameters from Macrocellular Measurements at 1800 MHz

open access: yesEURASIP Journal on Wireless Communications and Networking, 2007
The inter- and intrasite correlation properties of shadow fading and power-weighted angle spread at both the mobile station and the base station are studied utilizing narrowband multisite MIMO measurements in the 1800 MHz band.
Laura Garcia   +3 more
doaj   +1 more source

An Empirical Air-to-Ground Channel Model Based on Passive Measurements in LTE [PDF]

open access: yes, 2019
In this paper, a recently conducted measurement campaign for unmanned-aerial-vehicle (UAV) channels is introduced. The downlink signals of an in-service long-time-evolution (LTE) network which is deployed in a suburban scenario were acquired.
Ai, Bo   +6 more
core   +2 more sources

Multi-Frequency Air-to-Ground Channel Measurements and Analysis for UAV Communication Systems

open access: yesIEEE Access, 2020
In order to implement unmanned aerial vehicle (UAV)-based wireless communications, a better understanding of wireless channels and the corresponding channel characterizations are critical.
Zhuangzhuang Cui   +4 more
doaj   +1 more source

Wireless Signal Propagation Prediction Based on Computer Vision Sensing Technology for Forestry Security Monitoring

open access: yesSensors, 2021
In this paper, Computer Vision (CV) sensing technology based on Convolutional Neural Network (CNN) is introduced to process topographic maps for predicting wireless signal propagation models, which are applied in the field of forestry security monitoring.
Jialuan He   +6 more
doaj   +1 more source

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