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

Lutz, Erich (2016) Towards the Terabit/s satellite – interference issues in the user link. International Journal of Satellite Communications and Networking, 34 (4). Wiley. DOI: 10.1002/sat.1114 ISSN 1542-0973

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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 (ViaSat-1, 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.

Item URL in elib:https://elib.dlr.de/104669/
Document Type:Article
Title:Towards the Terabit/s satellite – interference issues in the user link
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Date:July 2016
Journal or Publication Title:International Journal of Satellite Communications and Networking
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1002/sat.1114
Keywords:terabit/second satellite; user link; interference; throughput
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Multimedia Satellitennetze
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Scalise, Dr.-Ing. Sandro
Deposited On:14 Jun 2016 15:32
Last Modified:14 Jun 2016 15:32

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