Performance, cost analysis, and ground segment design of ultra high throughput multi‐spot beam satellite networks applying different capacity enhancing techniques

Katona, Zsolt; Clazzer, Federico; Shortt, Kevin; Watts, Simon; Lexow, Hans Peter; Winduratna, Ratna

doi:10.1002/sat.1160

Cited by 25 publications

(15 citation statements)

References 29 publications

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“…Total system capacity for all the beams, with B = 1.05 GHz, β = 99.99% for carrier power = −74 dBm [13]. Table 3 and Table 4 illustrate the information bit rate and system capacity with various modulation techniques, roll-off factors and processing gains using the parameters of [16] and reducing beam number strategy from the model suggested in [2] to decrease the processing gain and allow a wider band width per user which results an increase of the information rate and total system capacity.…”

Section: Numerical Results and Analysismentioning

confidence: 99%

“…Another paper [16] presented several capacity enhancing techniques, SGD techniques increases the system availability with a significant increase in the system cost by adding extra gatways, while full frequency reuse with CCI cancellation and scheduling provides the highest system capacity of 600 Gbps in the sake of the availabity that decreased to 98.82%.…”

Section: Numerical Results and Analysismentioning

confidence: 99%

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Performance Assessment of Coded-Beam High Throughput Satellites

Abass¹,

Halim²,

El‐Hennawy³

2017

IJCNS

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High-throughput satellite (HTS) systems usually make use of Multibeam coverage at high frequency bands in order to offer broadband access of large areas. Multibeam coverage increases the available capacity through frequency reuse and spatial separation. However, one of its major drawbacks is interspot interference which considered the motivation to propose a new approach using a coding technique to distinguish between beams that will be employed to mitigate this interference without the need of frequency reuse. This approach makes the use of orthogonal codes to identify beams and allow using the total satellite bandwidth per beam. Proposed system double the bandwidth used in each beam and save the usage of antenna polarization resource used in former designs, which may be used as a multiple accessing resource inside the coded beams. The objective of this paper is to provide a comprehensive performance assessment methodology for the proposed approach. Result validation is introduced by comparing the proposed system performance with conventional systems that relay on the DVB standards.

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Section: Numerical Results and Analysismentioning

confidence: 99%

Section: Numerical Results and Analysismentioning

confidence: 99%

Performance Assessment of Coded-Beam High Throughput Satellites

Abass¹,

Halim²,

El‐Hennawy³

2017

IJCNS

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“…Figure shows the capacity improvement due to IC for the same parameter setting as mentioned earlier and ρ = 0.7. This choice of ρ is somewhat optimistic, but in the range considered in . It can be seen that for K = 3, the improvement is not pronounced, because of the limiting influence of noise.…”

Section: User Uplinkmentioning

confidence: 98%

Towards the Terabit/s satellite – interference issues in the user link

Lutz

2015

Satell Commun Network

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Present high-capacity geostationary satellites provide throughput in the range of 70 Gb/s (Ka-Sat) up to 140 Gb/s EchoStar 17). In order to keep up with the quickly increasing bit rate requirements of new services and applications, future communication satellites must increase their capacity by an order of magnitude, thus reaching the terabit/s throughput range. The challenge of achieving a terabit/s satellite system requires investigation of a multitude of issues, limitations and problems.This paper discusses the main interference effects occurring in the user uplinks and downlinks of a multi-beam satellite: co-channel interference, adjacent-channel interference and cross-polarisation interference. Different cluster sizes for the beam pattern and use of dual polarisations are considered, and an optimum cluster scheme with regard to throughput is discussed in more detail. Moreover, the influence of beam spacing, interference cancellation for the user uplink as well as rain fading for the uplink and downlink are discussed. For the satellite spot beam antenna, a typical tapered antenna characteristic with side lobes is considered. The investigation is based on Monte Carlo simulation of user positions within the beam pattern, resulting in CDFs of signal-to-noise-plus-interference power ratio and capacity. Besides Shannon capacity, the achievable throughput of Digital Video Broadcasting -Return Channel over Satellite, 2nd Generation (DVB-RCS2), Digital Video Broadcasting over Satellite, 2nd Generation (DVB-S2) and Digital Video Broadcasting over Satellite, 2nd Generation, Extension (DVB-S2X) is evaluated. Considering 200 beams and 1 GHz of bandwidth, it is shown that with efficient uplink and downlink schemes, a total throughput of 1 Tb/s can be approached.

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“…In this regard, multibeam SatCom has been widely advocated as an appropriate way to assess very high-speed satellite-users link, in which a large number of spot beams is used. Satellite links aim at providing high-speed communications (order of hundreds of Mbps per user [3], [4]) to users in areas where the traditional terrestrial networks offer very low quality of service [5].…”

Section: Introductionmentioning

confidence: 99%

A PHY Layer Security Analysis of a Hybrid High Throughput Satellite With an Optical Feeder Link

Illi

Bouanani

Ayoub³

et al. 2020

IEEE Open J. Commun. Soc.

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Hybrid terrestrial-satellite (HTS) communication systems have gained a tremendous amount of interest recently due to the high demand for global high data rates. Conventional satellite communications operate in the conventional Ku (12 GHz) and Ka (26.5-40 GHz) radio-frequency bands for assessing the feeder link, between the ground gateway and the satellite. Nevertheless, with the aim to provide hundreds of Mbps of throughput per each user, free-space optical (FSO) feeder links have been proposed to fulfill these high data rates requirements. In this paper, we investigate the physical layer security performance for a hybrid very high throughput satellite communication system with an FSO feeder link. In particular, the satellite receives the incoming optical wave from an appropriate optical ground station, carrying the data symbols of N users through various optical apertures and combines them using the selection combining technique. Henceforth, the decoded and regenerated information signals of the N users are zero-forcing (ZF) precoded in order to cancel the interbeam interference at the end-users. The communication is performed under the presence of malicious eavesdroppers nodes at both hops. Statistical properties of the signal-to-noise ratio of the legitimate and wiretap links at each hop are derived, based on which the intercept probability metric is evaluated. The derived results show that above a certain number of optical apertures, the secrecy level is not improved further. Also, the system's secrecy is improved using ZF precoding compared to the no-precoding scenario for some specific nodes' positions. All the derived analytical expressions are validated through Monte Carlo simulations. INDEX TERMS Free-space optics, high-throughput communications, hybrid terrestrial-satellite systems, intercept probability, optical feeder links, physical layer security, zero-forcing precoding.

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Performance, cost analysis, and ground segment design of ultra high throughput multi‐spot beam satellite networks applying different capacity enhancing techniques

Cited by 25 publications

References 29 publications

Performance Assessment of Coded-Beam High Throughput Satellites

Performance Assessment of Coded-Beam High Throughput Satellites

Towards the Terabit/s satellite – interference issues in the user link

A PHY Layer Security Analysis of a Hybrid High Throughput Satellite With an Optical Feeder Link

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