A cross-layer bandwidth request algorithm based on chaotic prediction model for broadband multimedia satellite communications

2013 ◽  
Author(s):  
Houtian Wang ◽  
Qi Zhang ◽  
Yongjun Wang ◽  
Naijin Liu ◽  
Xiangjun Xin ◽  
...  
Keyword(s):  
Prediction Model ◽  
Satellite Communications ◽  
Cross Layer ◽  
Bandwidth Request

scholarly journals Investigation of accuracy of rain-rate and rain-attenuation prediction models in satellite communications based on meteorological skills

MAUSAM ◽  
2021 ◽  
Vol 68 (4) ◽  
pp. 621-632
Author(s):  
MEHRAN BEHJATI ◽  
JIT SINGH MANDEEP ◽  
MAHAMOD ISMAIL ◽  
ROSDIADEE NORDIN
Keyword(s):  
Prediction Model ◽  
Rain Rate ◽  
Prediction Models ◽  
Satellite Communications ◽  
Rain Attenuation ◽  
Vital Role ◽  
Measured Data ◽  
Radio Link ◽  
Communication Link ◽  
Specific Prediction

Rainfall is a major destructive factor which severely reduces the quality and reliability of propagated signals in satellite communications. Hence, rain-attenuation prediction plays a vital role in the satellite radio link planning and engineering. The accuracy of the rain-attenuation prediction models depends on two things; (i) the accuracy of rain-rate information and (ii) the area of study. Therefore, selecting an appropriate rain-attenuation prediction model for a new site without having any specific prediction model and experimental measured rain-rate would be challenging. In this regard, this letter takes advantage of climatology skills to find an accurate model for such kind of areas. To do so, we study the Urmia-site (37.55° N, 45.1° E) and its communication link with the Eutelsat 25A (25.5° E), where there is no available experimental measured data and specific prediction models for that site. Therefore, based on the meteorological skills, the Yong-in site in South-Korea (37.43° N, 126.93° E) was chosen, as a homogeneous area with Urmia, which has available measured data of rainfall and rain-attenuation. Afterward, the most common used global prediction models are applied to Yong-in and the results are compared with the existing measurements. Consequently, the more accurate rain-rate and rain-attenuation prediction models are investigated and generalized to Urmia, which are the ITU-R P.837-5 model with 34% r.m.s. and the Joo-Hwan model with 18% r.m.s., respectively. Finally, the amount of rain-attenuation in different useful frequency bands (10-50 GHz) is investigated for Urmia by the Joo-Hwan model.

Rain Attenuation Prediction Model Based on Hyperbolic Cosecant Copula for Multiple Site Diversity Systems in Satellite Communications

2017 ◽  
Vol 65 (9) ◽  
pp. 4768-4779 ◽  
Author(s):  
Arsim Kelmendi ◽  
Gorazd Kandus ◽  
Andrej Hrovat ◽  
Charilaos I. Kourogiorgas ◽  
Athanasios D. Panagopoulos ◽  
...  
Keyword(s):  
Prediction Model ◽  
Satellite Communications ◽  
Rain Attenuation ◽  
Multiple Site ◽  
Model Based ◽  
Diversity Systems ◽  
Site Diversity

Prediction Model of Fade Duration Statistics for Satellite Communications at Ka- and $Q$ -Bands

2019 ◽  
Vol 67 (8) ◽  
pp. 5519-5531
Author(s):  
Arsim Kelmendi ◽  
Andrej Hrovat ◽  
Mihael Mohorcic ◽  
Andrej Vilhar
Keyword(s):  
Prediction Model ◽  
Satellite Communications

1575: External Validation of Outcome Prediction Model for Ureteral/Renal Calculi

2005 ◽  
Vol 173 (4S) ◽  
pp. 427-427
Author(s):  
Sijo J. Parekattil ◽  
Udaya Kumar ◽  
Nicholas J. Hegarty ◽  
Clay Williams ◽  
Tara Allen ◽  
...  
Keyword(s):  
Prediction Model ◽  
Outcome Prediction ◽  
External Validation ◽  
Renal Calculi

Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications

2018 ◽  
Author(s):  
Karl F. Warnick ◽  
Rob Maaskant ◽  
Marianna V. Ivashina ◽  
David B. Davidson ◽  
Brian D. Jeffs
Keyword(s):  
Remote Sensing ◽  
Radio Astronomy ◽  
Phased Arrays ◽  
Satellite Communications

Development of a headlamp dimming request prediction model

1975 ◽  
Author(s):  
Vivek D. Bhise ◽  
Thomas F. Swigart ◽  
Eugene I. Farber
Keyword(s):  
Prediction Model
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