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Enablers for Matching Demand in GEO Multi-Beam Satellites: Dynamic Beamforming, Precoding, or Both?
Chaker, Haythem; Maturo, Nicola; Chatzinotas, Symeon et al.
202138th International Communications Satellite Systems Conference (ICSSC)
 

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Abstract :
[en] In trending satellite communication applications, the traffic demand is not only rapidly increasing, it is also spatiotemporally evolving. This motivates the deployment of high throughput satellite systems with flexible radio resource management and transmission techniques. In contrast to regular beam layout plans (RBLP) currently used in GEO payloads, future flexible payloads are capable of dynamic beamforming (DBF) in order to illuminate the coverage area using highly-directive and traffic-adaptive beampatterns. The beampatterns in an adaptive beam layout plan (ABLP) can have irregular shapes and mutual overlaps, potentially causing excessive inter-beam interferences (IBI) compared to the RBLP case. In this work, we evaluate the combination of DBF and precoding as the latter promises high throughputs in interference-limited conditions and is supported by the recent DVB-S2X norm. Under realistic non-uniform traffic patterns, we compare a typical RBLP against an ABLP in terms of their traffic matching performances with and without precoding. Through the comparisons, we show that DBF enables to significantly reduce the capacity mismatches using an ABLP that uniformly balances the demand distribution across beams. Noting that the ABLP is IBI agnostic, an unpredictable interference environment is built. In such conditions, precoding enables to reliably provide high throughputs through full frequency reuse.
Disciplines :
Electrical & electronics engineering
Author, co-author :
Chaker, Haythem ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Maturo, Nicola ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Chatzinotas, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Chougrani, Houcine ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Alves Martins, Wallace ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Grotz, Joel;  SES
External co-authors :
yes
Language :
English
Title :
Enablers for Matching Demand in GEO Multi-Beam Satellites: Dynamic Beamforming, Precoding, or Both?
Publication date :
30 September 2021
Number of pages :
8
Event name :
38th International Communications Satellite Systems Conference (ICSSC)
Event place :
Arlington, Virginia, United States
Event date :
from 27-09-2021 to 30-09-2021
Audience :
International
Focus Area :
Computational Sciences
FnR Project :
FNR13778945 - Dynamic Beam Forming And In-band Signalling For Next Generation Satellite Systems, 2019 (01/01/2020-31/12/2022) - Symeon Chatzinotas
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since 21 December 2021

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