Evaluation of Diversity and Power Control Techniques for Satellite Communication Systems in Tropical and Equatorial Rain Climates

Pan, Q.W.; Allnutt, J.E.; Tsui, C.

doi:10.1109/tap.2008.929448

Cited by 30 publications

(29 citation statements)

References 14 publications

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“…For analysis, different factors such as frequency, elevation angle and polarization angle can be changed accordingly. After calculating the path attenuation using (2), the site diversity gain at any two locations in the map can be determined in (3).…”

Section: Theoretical Formulation and Modelsmentioning

confidence: 99%

“…In such situations, common mitigation techniques such as power control cannot be used to counteract the large signal fade. The dynamic range generally considered for power variation is about 10 dB [3]. One of the most effective methods to overcome such large signal fades due to rain attenuation is site diversity [4].…”

Section: Introductionmentioning

confidence: 99%

“…Good agreement between the ITU-R predictions and measured diversity gain has been observed at 11.198 GHz with a site separation of 12.3 km. In Pan [3], experiments conducted in Lae, Papua, New Guinea showed that at least 5 dB site diversity gain can be obtained in the tropical region [3]. In 2010, the study of micro rain cell measurements was conducted in India [9].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance of Site Diversity Investigated Through RADAR Derived Results

Yeo

Lee

Ong

2011

IEEE Trans. Antennas Propagat.

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Site diversity is an effective rain attenuation mitigation technique, especially in the tropical region with high rainfall rate. The impact of different factors such as site separation distance, frequency, elevation angle, polarization angle, baseline orientation and wind direction is assessed. Results are compared to those reported in existing literature and also compared to the commonly used ITU-R site diversity prediction models. The effect of the wind direction on site diversity is also presented. It can be observed that diversity gain is highly dependent on the site separation distance, elevation angle and wind direction but independent of the frequency, baseline angle and polarization angle of the signal. This study is useful for the implementation of site diversity as a rain attenuation mitigation technique.

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Section: Theoretical Formulation and Modelsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Performance of Site Diversity Investigated Through RADAR Derived Results

Yeo

Lee

Ong

2011

IEEE Trans. Antennas Propagat.

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“…Due to this great demand and overcongestion of the Ku-frequency band, satellite communication is now exploiting the Ka (20/30 GHz) band (Yeo et al, 2011;Luini et al, 2011;Pan et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Modeling of rain attenuation and site diversity predictions for tropical regions

et al. 2015

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Abstract. Presented in this paper is an empirical model for long-term rain attenuation prediction and statistical prediction of site diversity gain on a slant path. Rain attenuation prediction on a slant path is derived using data collected from tropical regions, and the formula proposed is based on Gaussian distribution. The proposed rain attenuation model shows a considerable reduction in prediction error in terms of standard deviation and root-mean-square (rms) error. The site diversity prediction model is derived as a function of site separation distance, frequency of operation, elevation angle and baseline orientation angle. The novelty of the model is the inclusion of low elevation angles and a high link frequency up to 70 GHz in the model derivation. The results of comparison with Hodge, Panagopoulos and Nagaraja empirical predictions show that the proposed model provides a better performance for site separation distance and elevation angle. The overall performance of the proposed site diversity model is good, and the percentage error is within the allowable error limit approved by International Telecommunication UnionRegion (ITU-R).

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“…In general, there are three rain fade countermeasures for satellite broadcast systems: time diversity, site diversity, and power control. The common advantage of these three techniques is that they do not impose the burden of extra bandwidth allocation, in contrast with digital processing methods such as adaptive modulation or variable symbol rate . Time diversity is the retransmission of a signal several times with an acceptable delay.…”

Section: Introductionmentioning

confidence: 99%

QoS provisioning by power control for video communication via satellite links

Lee

2014

Satell Commun Network

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Summary Video transmissions over satellite links are sensitive to signal fades because of rain, especially in the tropics. We performed a video‐streaming experiment over a satellite link for 24 days distributed over 1 year to investigate the effects of rain fade. Based on the measurements, models for the relationships between rainfall rate, power level, packet loss, and video quality are proposed. Furthermore, for both uplink and downlink channel, an adaptive closed loop power control algorithm, with a Proportional–Integral–Derivative controller is designed. This is used for the mitigation of the rain‐induced attenuation in order to guarantee a certain level of Quality of Service and Quality of Experience. Simulation results show the effectiveness of the proposed power control solution and its ability to sustain video quality levels in spite of rain fades. Copyright © 2014 John Wiley & Sons, Ltd.

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Evaluation of Diversity and Power Control Techniques for Satellite Communication Systems in Tropical and Equatorial Rain Climates

Cited by 30 publications

References 14 publications

Performance of Site Diversity Investigated Through RADAR Derived Results

Performance of Site Diversity Investigated Through RADAR Derived Results

Modeling of rain attenuation and site diversity predictions for tropical regions

QoS provisioning by power control for video communication via satellite links

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