A Systemic Approach to the Compensation of Rain Attenuation in Ka-Band Communication Satellites

Angeletti, Piero; Lisi, Marco

doi:10.1155/2012/791635

Cited by 8 publications

(3 citation statements)

References 14 publications

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“…Step 9: Calculation of the attenuation exceeded for 0.01% of an average year 𝐴 0.01 = 𝛾 𝑅 𝐿 𝐸 dB (13) Step 10: Estimation of attenuation value exceeded for other percentages of an average year, in the range 0.001% to 5%, done by the expression below: If p 1% or ≥ |𝜑| ≥ 36: ) −(0.655+0.33 ln(p)−0.045 ln(A 0.01 )−β(1−p) sin θ dB [22] (17)…”

Section: Model Description 341 Itu-r Rain Attenuation Modelmentioning

confidence: 99%

Evaluation of rainfall rates and rain-induced signal attenuation for satellite communication in the South-South Region of Nigeria

Ukommi,

Ekanem,

Ubom

et al. 2024

Nig. J. Tech.

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Rain fade causes signal attenuation which can relatively results in signal quality performance degradation, increased pathloss and coverage area reduction in satellite communication networks, most especially in the tropics and at higher operational frequencies above 10GHz. Analysis of rain attenuation provides useful insight for satellite communication engineers for efficient network planning and design within the region of study. Hence this paper presents threeyear analysis of signal-induced attenuation in the South-South States of Nigeria for the cities of Port-Harcourt, Uyo, Calabar and Eket, whose terrain characteristics could be generalized to represent urban, sub-urban and rural terrains in Nigeria. The International Telecommunications Union Radio-wave propagation (ITU-R P618-13) model was used to estimate the long-term rain attenuation at 10GHz, 20GHz and 30GHz for satellite communication applications. Results obtained at 10GHz, 20GHz and 30GHz operational frequencies show that at high frequency, rain fade can cause signal attenuation levels in the south-south region of Nigeria. In all, Calabar recorded the highest rain rate and corresponding highest attenuation level of 96.13dB at 30GHz compared to 50.29dB at 20GHz for the period under review.

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Section: Model Description 341 Itu-r Rain Attenuation Modelmentioning

confidence: 99%

Evaluation of rainfall rates and rain-induced signal attenuation for satellite communication in the South-South Region of Nigeria

Ukommi,

Ekanem,

Ubom

et al. 2024

Nig. J. Tech.

View full text Add to dashboard Cite

show abstract

“…In the following, for notation simplicity, we assume that the receiver noise temperature is independent from the atmospheric attenuation. The more general formulation for the user terminal noise temperature dependency on the atmospheric attenuation can be found in [19] and [20]. We also neglect the effect of atmospheric fading which has been shown to have negligible impact on the average system throughput [19].…”

Section: ) Link Budget Modelmentioning

confidence: 99%

A Pragmatic Approach to Massive MIMO for Broadband Communication Satellites

Angeletti

Gaudenzi

2020

IEEE Access

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In this paper, we analyze the performance of Massive Multiple Input Multiple Output (M-MIMO) techniques aiming at increasing the throughput of broadband satellites. In particular, we investigate a "pragmatic" approach to the design of the M-MIMO to ease its implementation both at system and satellite payload level. We compare the performance of optimized classical Minimum Mean Square Error (MMSE), Zero Forcing (ZF), Matched Filter (MF) schemes with the proposed "pragmatic" M-MIMO one dubbed fixed Multi-Beam (MB). To further boost the M-MIMO performance, a novel radio resource management approach based on Mixed Integer Quadratic Programming (MIQDP-RRM) is proposed. The adoption of MIQDP-RRM is shown to greatly enhance the M-MIMO throughput performance. It is shown that the MB scheme closely approximate the MF, ZF and MMSE performance with a much simpler active antenna-based payload architecture and without requiring any user channel estimation. The MB MIQDP-RRM M-MIMO pragmatic solution allows to achieve higher satellite broadband throughput compared to a conventional four colors frequency reuse scheme (CFR) with affordable complexity for both space and ground segments. At the same time we show that by non-conventional CFR multi-beam array design, the performance gap compared to MB MIQDP-RRM M-MIMO can be significantly reduced.

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“…But Ka-Band has a higher rain attenuation factor which requires further enhancement in system level to cater for the same [7]. Further advancement in DVBS2 is now being considered for an application like satellite to mobile devices communication, where the receiver will be inside railway coach so that passengers can enjoy TV while on move also [8].…”

Section: Introductionmentioning

confidence: 99%

DVBS2 System Using SDR in Hardware-in-Loop Mode

Bera¹,

Sur²

2017

IJWMT

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Digital Video Broadcasting-Satellite 2 nd generation (DVBS2) is one of the popular source of entertainment in today's world. It has made TV viewing superb experience due to its ability of sharing high quality picture (i.e. High Definition). But the satellite channel basically follows AWGN type of response as there is lesser chances of multipath generation. The following paper deals with the implementation of the DVBS2 system in Software Defined Radio (SDR) platform and further analysis of its performance both in terms of bit error rate (BER) and actual multimedia transfer capability over different channel conditions like AWGN, and also under multipath condition i.e. Rician channel. All the analysis in the paper is done in hardware-in-loop mode.

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A Systemic Approach to the Compensation of Rain Attenuation in Ka-Band Communication Satellites

Cited by 8 publications

References 14 publications

Evaluation of rainfall rates and rain-induced signal attenuation for satellite communication in the South-South Region of Nigeria

Evaluation of rainfall rates and rain-induced signal attenuation for satellite communication in the South-South Region of Nigeria

A Pragmatic Approach to Massive MIMO for Broadband Communication Satellites

DVBS2 System Using SDR in Hardware-in-Loop Mode

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