TELKOMNIKA Telecommunication Computing Electronics and Control
Estimating losses at 40-GHz downlink using non-meteorological techniques in heavy rain areas

TELKOMNIKA Telecommunication Computing Electronics and Control
Estimating losses at 40-GHz downlink using non-meteorological techniques in heavy rain areas

Rain attenuation
Satellite-earth link
Statistical frequency scaling
Tropical regions
V-band

The advancement of satellite communication has arisen tremendously where
higher capacity communications systems are needed. Most satellite
engineers are shifting to Ka, Q, and V-band upcoming since the low
frequencies such as below 10 GHz are already congested. Actual
measurement data at millimetre-wave frequencies in tropical regions are
minimal. The prediction of rain attenuation at frequencies above 10 GHz is
required to determine a reliable fade margin. In this paper, a statistical
frequency scaling technique has been developed as an alternative way of
estimating rain attenuation. The technique was derived based on the
correlation between the attenuation ratio of a higher and lower frequency
against the attenuation at a lower frequency. The attenuations from the
proposed model were compared to the proposed frequency scaling by
International Telecommunication Union-R (ITU-R) as well as the
conventional ITU-R rain prediction model. To deliver a reliable model,
validation methods have been done using a set of data with different years
and locations in tropical regions. A dependent prediction technique with the
lowest root mean square error (RMSE) value and error was produced. This
technique is beneficial in applying suitable mitigation techniques to
moderate rain fade in tropical regions.

Nur Hanis Sabrina Suhaimi, Ahmad Fadzil Ismail, Yasser Asrul Ahmad, Khairayu Badron

http://telkomnika.uad.ac.id

Feb 16, 2023

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