Prediction of the tropospheric scintillation for earth to satellite link in tropical climate

Rahim, Nadirah Abdul; Dao, Hassan; Islam, Md. Rafiqul; Ismail, Ahmad Fadzil

doi:10.1109/icom.2011.5937143

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…In order to extract the scintillation from the beacon signal received, a careful selection of the high pass filter cut-off frequency is to be implemented. Authors have extracted the scintillation amplitude in our region from beacon signal, but have used cut-off frequency, which is previously used in the research papers [4] [5]. Weather the cut-off frequency is suitable for our region or not is to be investigated [6].…”

Section: Introductionmentioning

confidence: 99%

Modification of ITU-R Parameters to Improve the Prediction of Tropospheric Scintillation for Tropical Regions

B¹,

Kotamraju²,

Kavya³

2018

IJET

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Scintillation is the rapid fluctuation of the received signal. It is caused by the variation in the refractivity structure of the atmosphere profile. This phenomenon leads to the signal degradation and is significant in low fade margin links and at low elevation angles. So, analyzing the scintillation intensity and its statistics are vital for a system designer to design an efficient system for the satellite communication link. This paper presents the methodology to extract the scintillation intensity from the raw beacon signal and comparison of ITU-R scintillation prediction model with the measured results to test its acceptability over tropical region. When compared with measured results, ITU-R model overestimates the scintillation fade. Hence the parameters of the time percentage factor are modified to obtain near fit to the measured results.

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Section: Introductionmentioning

confidence: 99%

Modification of ITU-R Parameters to Improve the Prediction of Tropospheric Scintillation for Tropical Regions

B¹,

Kotamraju²,

Kavya³

2018

IJET

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show abstract

“…In the future, the communications system will be required to operate at higher frequencies, inevitably in frequencies above 10 GHz. The frequencies are indeed higher than the traditional C-band and Ku-band frequency which is in line with Shannon's capacity theorem, in order to enable the link to meet larger capacity requirements, high data rates and speed for the advance multimedia satellite communication and broadcasting system [4] and [5] However, the propagation of radiowave signal at these frequencies will be subjected to acute attenuation due to precipitation, ice melting layers, clouds, fog, and gaseous absorption [6] and [7]. At high frequency, the propagating signal is undeniably sensitive to rainfall; and rain fade degrades the system availability and performance of satellite communication system [8] and [9].…”

mentioning

confidence: 99%

Assessments of Time Diversity Rain Fade Mitigation Technique for V-band Space-Earth Link Operating in Tropical Climate

Ismail¹,

Badron²,

Sobli³

et al. 2013

IJOEE

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Satellite communication systems are moving towards greater capacity. Millimeter wave frequency offers a large bandwidth allocation, requires small antenna size and should not experience congested spectrum environment. Nonetheless, rain posses a grave threat to such satellite communication links especially in tropical region where the hydrometeors can severely affect the signal. Rain is the factor that typically limits the implementation or use of higher frequencies for satellite communications in this region. Time diversity is a promising mitigation technique to countermeasure such impairments. It is envisioned that the technique will not be requiring extensive auxiliary's equipment. This paper outlines the likely improvement of a future V-band frequency space-Earth link using proposed time diversity (TD) technique. The analyses relating to the performance prediction of a projected satellite communication link in a tropical climate environment assimilating TD scheme are also included. The recovery strategy and its associated equations were deduced reflecting the likely memory capacity requirement of TD. The knowledge will be incorporated accordingly at the receiver with hopes to mitigate attenuation due to rain endured by the propagation path.  Index Terms-satellite communications, fade mitigation techniques, time diversity, and millimeter wave I. INTRODUCTION Since 1965, the reaches and capabilities of satellite communications grow intensively in terms of usages and offered services. At the first preface, satellite communications was used to provide telephony services. The trend of the services provided by satellite then diversifies into the area of broadcasting services. It gradually expanded to TV broadcast distribution, directto-home (DTH), internet trunking, broadband access and fixed satellite services (FSS). HDTV and video-ondemand (VOD), are two of the examples of the current Manuscript

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Impact of Rain Attenuation to Ka-Band Signal Propagation in Tropical Region: A Study of 5-Year MEASAT-5’s Beacon Measurement Data

Samat

Singh

2020

Wireless Pers Commun

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Prediction of the tropospheric scintillation for earth to satellite link in tropical climate

Cited by 6 publications

References 7 publications

Modification of ITU-R Parameters to Improve the Prediction of Tropospheric Scintillation for Tropical Regions

Modification of ITU-R Parameters to Improve the Prediction of Tropospheric Scintillation for Tropical Regions

Assessments of Time Diversity Rain Fade Mitigation Technique for V-band Space-Earth Link Operating in Tropical Climate

Impact of Rain Attenuation to Ka-Band Signal Propagation in Tropical Region: A Study of 5-Year MEASAT-5’s Beacon Measurement Data

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