Results 21 to 30 of about 52,986 (291)

Opportunistic Relay in Multicast Channels With Generalized Shadowed Fading Effects: A Physical Layer Security Perspective

open access: yesIEEE Access, 2021
Through ordinary transmissions over wireless multicast networks are greatly hampered due to the simultaneous presence of fading and shadowing of wireless channels, secure transmissions can be enhanced by properly exploiting random attributes of the ...
S. M. Saumik Shahriyer   +4 more
doaj   +1 more source

Estimation of wireless channel fading model in maritime communication for complex meteorological environment

open access: yesDianxin kexue, 2022
Due to the influence of complex marine environmental factors such as sparse scattering of electromagnetic wave on the ocean surface, wave shadow fading, complex meteorological environment.It is extremely hard to model the fading of wireless channel in ...
Yasheng DAI, Bolin MA, Guangxue YUE
doaj   +2 more sources

Efficient modeling of correlated shadow fading in dense wireless multi-hop networks [PDF]

open access: yes, 2014
Correlated shadow fading has a detrimental effect on the performance of wireless systems. Neglecting shadowing correlations could lead to inaccurate simulation results and unreliable wireless system design.
Haines, Russell, Lu, Shani, May, John
core   +3 more sources

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

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