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Zero-forcing precoding with partial CSI in multibeam high throughput satellite systems

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dc.contributor.authorAhmad, I.
dc.contributor.authorNguyen, K.
dc.contributor.authorLetzepis, N.
dc.contributor.authorLechner, G.
dc.contributor.authorJoroughi, V.
dc.date.issued2021
dc.description.abstractPrecoding has emerged as a prominent technique to mitigate interbeam interference (IBI) in the forward link of a multibeam high throughput satellite system. In this paper, we consider zero-forcing (ZF) precoding to mitigate IBI. To reduce the channel state information (CSI) feedback from the user terminals, which consequently reduces the latency and signaling overheads, we design a ZF precoder with matrix and vector normalizations using partial CSI and analyze its ergodic SR performance. We consider a practical scenario where the links between the satellite and user terminals are affected by rain fading attenuation and derive an analytical expression, upper and lower bounds, and asymptotic (in terms of transmit power) approximations for the ergodic SR achieved by this ZF precoder. Many important insights are obtained from these results. Also, the robustness of this ZF precoder to CSI estimation errors is numerically analyzed
dc.identifier.citationIEEE Transactions on Vehicular Technology, 2021; 70(2, article no. 9328170):1410-1420
dc.identifier.doi10.1109/TVT.2021.3052225
dc.identifier.issn0018-9545
dc.identifier.issn1939-9359
dc.identifier.urihttps://hdl.handle.net/11541.2/147122
dc.language.isoen
dc.publisherIEEE
dc.rightsCopyright 2021 IEEE Access Condition Notes: Accepted manuscript is available open access
dc.source.urihttps://doi.org/10.1109/TVT.2021.3052225
dc.subjectergodic sum-rate
dc.subjectmultibeam antenna radiation pattern
dc.subjectmultibeam satellite
dc.subjectprecoding
dc.subjectzero-forcing
dc.titleZero-forcing precoding with partial CSI in multibeam high throughput satellite systems
dc.typeJournal article
pubs.publication-statusPublished
ror.fileinfo12220148280001831 13220148270001831 CS 'Zero-forcing
ror.mmsid9916484109201831

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