Adaptive Resources Allocation for Flexible Payload Enabling VHTS Systems: Methodology and Architecture

Ortíz, Flor; Rodríguez-Osorio, Ramón Martínez; Natera, Miguel Alejandro Salas; Landeros‐Ayala, Salvador

doi:10.1049/cp.2018.1694

Cited by 14 publications

(24 citation statements)

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“…The uplink is not considered in the forward link because there are different technologies to guarantee a value not affecting the total link budget, such as ULPC (Uplink Power Control), or gateway diversity [24,25]. The total CINR (in dB) in the downlink of the user link is calculated for each geographical position using (9):…”

Section: Spot Beam Model and Link Budget Calculationmentioning

confidence: 99%

Forward Link Optimization for the Design of VHTS Satellite Networks

et al. 2020

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The concept of geostationary VHTS (Very High Throughput Satellites) is based on multibeam coverage with intensive frequency and polarization reuse, in addition to the use of larger bandwidths in the feeder links, in order to provide high capacity satellite links at a reduced cost per Gbps in orbit. The dimensioning and design of satellite networks based on VHTS imposes the analysis of multiple trade-offs to achieve an optimal solution in terms of cost, capacity, and the figure of merit of the user terminal. In this paper, we propose a new method for sizing VHTS satellite networks based on an analytical expression of the forward link CINR (Carrier-to-Interference-plus-Noise Ratio) that is used to evaluate the trade-off of different combinations of system parameters. The proposed method considers both technical and commercial requirements as inputs, including the constraints to achieve the optimum solution in terms of the user G/T, the number of beams, and the system cost. The cost model includes both satellite and ground segments. Exemplary results are presented with feeder links using Q/V bands, DVB-S2X and transmission methods based on CCM and VCM (Constant and Variable Coding and Modulation, respectively) in two scenarios with different service areas.

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Section: Spot Beam Model and Link Budget Calculationmentioning

confidence: 99%

Forward Link Optimization for the Design of VHTS Satellite Networks

et al. 2020

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“…Finally, to achieve flexibility in beamwidth, the output multiplexer of the traditional payload must be replaced by beam forming networks (BFNs). The BFN configuration change is halfway between the possibility of synthesizing any beam and the possibility of choosing from a set of configurations for the same coverage [7].…”

Section: A System Architecturementioning

confidence: 99%

“…On the other hand, operators claim that one of the main challenges in the design of future satellite broadband systems is the way to increase the satellite revenues while addressing uneven and dynamic traffic demands. In that sense, flexible payload is a promising solution to meet changing traffic demand patterns [3], [7]- [9].…”

Section: Introductionmentioning

confidence: 99%

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Convolutional Neural Networks for Flexible Payload Management in VHTS Systems

Ortíz

Tarchi

Martínez

et al. 2021

IEEE Systems Journal

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Very high throughput satellite (VHTS) systems are expected to have a large increase in traffic demand in the near future. However, this increase will not be uniform throughout the service area due to the nonuniform user distribution, and the changing traffic demand during the day. This problem is addressed using flexible payload architectures, enabling the allocation of the payload resources in a flexible manner to meet traffic demand of each beam, leading to dynamic resource management (DRM) approaches. However, DRM adds significant complexity to the VHTS systems, which is why in this article, we are analyzing the use of convolutional neural networks (CNNs) to manage the resources available in flexible payload architectures for DRM. The VHTS system model is first outlined, for introducing the DRM problem statement and the CNN-based solution. A comparison between different payload architectures is performed in terms of DRM response, and the CNN algorithm performance is compared by three other algorithms, previously suggested in the literature to demonstrate the effectiveness of the suggested approach and to examine all the challenges involved.

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“…From a system design perspective, the use of link adaptation techniques is motivated by the need to select the most appropriate modulation and coding scheme to meet the link budget conditions and availability requirements of each user terminal in the service area. A worst-case scenario satellite-link-based system design involves an inefficient approach and expenditure of valuable communication resources [8].…”

Section: Introductionmentioning

confidence: 99%

Forward Link Optimization for the Design of VHTS Satellite Networks

Ortíz¹,

Martínez²,

Natera³

et al. 2020

Preprint

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The concept of geostationary VHTS (Very High Throughput Satellites) is based on multibeam coverage with intensive frequency and polarization reuse in addition to the use of larger bandwidths in the feeder links, in order to provide high capacity satellite links at a reduced cost per Gbps in orbit. The dimensioning and design of satellite networks based on VHTS imposes the analysis of multiple trade-offs to achieve an optimal solution in terms of cost, capacity and figure of merit of the user terminal. In this paper, we propose a new method for sizing VHTS satellite networks based on an analytical expression of the forward link CINR (Carrier-to-Interference-plus-Noise Ratio) that is used to evaluate the trade-off of different combinations of system parameters. The proposed method considers both technical and commercial requirements as inputs including the constraints to achieve the optimum solution in terms of the user G/T, the number of beams and the system cost. The cost model includes both satellite and ground segments. Exemplary results are presented with feeder links using Q/V bands, DVB-S2X and transmission methods based on CCM and VCM (Constant and Variable Coding and Modulation, respectively) in two scenarios with different service areas.

show abstract

Adaptive Resources Allocation for Flexible Payload Enabling VHTS Systems: Methodology and Architecture

Cited by 14 publications

References 0 publications

Forward Link Optimization for the Design of VHTS Satellite Networks

Forward Link Optimization for the Design of VHTS Satellite Networks

Convolutional Neural Networks for Flexible Payload Management in VHTS Systems

Forward Link Optimization for the Design of VHTS Satellite Networks

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