Reference : Designing Joint Precoding and Beamforming in a Multiple Gateway Multibeam Satellite System

	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/10993/34595

Title :	Designing Joint Precoding and Beamforming in a Multiple Gateway Multibeam Satellite System
Language :	English
Author, co-author :	Joroughi, Vahid []
	Shankar, Bhavani [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Maleki, Sina [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Chatzinotas, Symeon [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
	Grotz, Joel []
	Ottersten, Björn [University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > >]
Publication date :	18-Apr-2018
Main document title :	IEEE WCNC 2018
Peer reviewed :	Yes
Audience :	International
Event name :	IEEE WCNC 2018
Event date :	04-2018
Event organizer :	IEEE Communications Society
Event place (city) :	Barcelona
Event country :	Spain
Keywords :	[en] Multibeam satellite systems ; precoding techniques ; on-board beamforming ; multiple gateway systems ; on-board processing
Abstract :	[en] This paper aims to design joint on-ground precoding and on-board beamforming of a multiple gateway multibeam satellite system in a hybrid space-ground mode where full frequency reuse pattern is considered among the beams. In such an architecture, each gateway serves a cluster of adjacent beams such that the adjacent clusters are served through a set of gateways that are located at different geographical areas. However, such a system brings in two challenges to overcome. First, the inter-beam interference is the bottleneck of the whole system and applying interference mitigation techniques becomes necessary. Second, as the data demand increases, the ground and space segments should employ extensive bandwidth resources in the feeder link accordingly. This entails embedding an extra number of gateways aiming to support a fair balance between the increasing demand and the corresponding required feeder link resources. To solve these problems, this study investigates the impact of employing a joint multiple gateway architecture and on-board beamforming scheme. It is shown that by properly designing the on-board beamforming scheme, the number of gateways can be kept affordable even if the data demand increases. Moreover, Zero Forcing (ZF) precoding technique is considered to cope with the inter-beam interference where each gateway constructs a part of block ZF precoding matrix. The conceived designs are evaluated with a close-to-real beam pattern and the latest broadband communication standard for satellite communications.
Research centres :	Interdisciplinary Centre for Security, Reliability and Trust (SnT) > Applied Security and Information Assurance Group (APSIA)
Funders :	Fonds National de la Recherche - FnR
Name of the research project :	PROSAT
Target :	Researchers ; Professionals ; Students ; General public ; Others
Permalink :	http://hdl.handle.net/10993/34595
FnR project :	FnR ; FNR11504382 > Björn Ottersten > PROSAT > On-Board Processing Techniques For High Throughput Satellites > 01/02/2017 > 31/01/2020 > 2016

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