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dc.contributor.authorJoroughi, Vahid
dc.contributor.authorVazquez, Miguel Angel
dc.contributor.authorPérez Neira, Ana Isabel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions
dc.identifier.citationJoroughi, V., Vazquez, M., Perez, A. Precoding in multigateway multibeam satellite systems. "IEEE transactions on wireless communications", Juliol 2016, vol. 15, núm. 7, p. 4944-4956.
dc.description.abstractThis paper considers a multigateway multibeam satellite system with multiple feeds per beam. In these systems, each gateway serves a set of beams (cluster) so that the overall data traffic is generated at different geographical areas. Full frequency reuse among beams is considered so that interference mitigation techniques are mandatory. Precisely, this paper aims at designing the precoding scheme which, in contrast to single gateway schemes, entails two main challenges. First, the precoding matrix shall be separated into feed groups assigned to each gateway. Second, complete channel state information (CSI) is required at each gateway, leading to a large communication overhead. In order to solve these problems, a design based on a regularized singular value block decomposition of the channel matrix is presented so that both intercluster (i.e., beams of different clusters) and intracluster (i.e., beams of the same cluster) interference is minimized. In addition, different gateway cooperative schemes are analyzed in order to keep the inter-gateway communication low. Furthermore, the impact of the feeder link interference (i.e., interference between different feeder links) is analyzed and it is shown both numerically and analytically that the system performance is reduced severely whenever this interference occurs even though precoding reverts this additional interference. Finally, multicast transmission is also considered. Numerical simulations are shown considering the latest fixed broadband communication standard DVB-S2X so that the quantized feedback effect is evaluated. The proposed precoding technique results to achieve a performance close to the single gateway operation even when the cooperation among gateways is low.
dc.format.extent13 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços
dc.subjectÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radiodifusió per ràdio
dc.subject.lcshArtificial satellites in telecommunication
dc.subject.lcshBroadband communication systems
dc.subject.otherMIMO precoding
dc.subject.otherMultibeam satellite systems
dc.subject.otherMultigateway transmission
dc.titlePrecoding in multigateway multibeam satellite systems
dc.subject.lemacSatèl·lits artificials en telecomunicació
dc.subject.lemacTelecomunicació de banda ampla, Sistemes de
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorJoroughi, V., Vazquez, M., Perez, A.
upcommons.citation.publicationNameIEEE transactions on wireless communications

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