Reducing Propagation Losses in Ku-Band Satellite Communication Using ITU-R Model
Research Area: | Volume 3,Issue 6, Nov. 2014 | Year: | 2014 |
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Type of Publication: | Article | Keywords: | Rain Attenuation, Elevation Angle, Slant Path, Ku-band, ITU-R, Model |
Authors: |
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Journal: | IJEIR | Volume: | 3 |
Number: | 6 | Pages: | 936-942 |
Month: | Nov.-Dec. | ||
ISSN: | 2277-5668 | ||
Abstract: | In this work, a modified ITU-R model that
maximizes the slant-path reduction, increases elevation angle and as
a result, minimizes the rain attenuation has been developed.
Attenuation losses are predominant phenomena in any signal
propagation. These losses are more severe in wireless propagation,
in which communication satellite is categorized. Various factors,
such as rain attenuation, cloud attenuation, tropospheric
scintillation, ionospheric scintillation, water vapour
attenuation, rain and ice depolarization, contribute to these
losses in different magnitude depending on the frequency of the
signal propagation. In Satellite communication propagation above
10GHz, eg ku-band, Rain is the most outstanding contributor to the
major signal impairment. ITU-R has put up models for predicting
and/or reducing individual causes of propagation impairment.
However, the existing ITU-R model for rain attenuation is “static”
meaning that the modeling parameters of the ground stations are
referenced to the longitude of the space segment. This, however,
does not optimize the goal of reducing the slant-path, increasing the
elevation angle and consequently reducing the rain attenuation
efficiently. In this paper, rain attenuation is calculated using
Modified ITU-R rain attenuation model. The outputs of the
work are used to calculate the rain attenuation and
comparison are made with the existing ITU-R model. The
result shows that the proposed modified ITU-R model
achieves significant improvement in rain attenuation
reduction. |
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Full text: IJEIR-1303_final.pdf
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