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dc.contributor.authorKuo, Chun-Ien_US
dc.contributor.authorWu, Sau-Hsuanen_US
dc.contributor.authorTseng, Chun-Kaien_US
dc.date.accessioned2014-12-08T15:28:03Z-
dc.date.available2014-12-08T15:28:03Z-
dc.date.issued2012-09-01en_US
dc.identifier.issn1536-1276en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TWC.2012.072512.111764en_US
dc.identifier.urihttp://hdl.handle.net/11536/20318-
dc.description.abstractRobust beamforming methods are studied to support relay-assisted coordinated multi-point (CoMP) retransmissions in downlink multi-cell networks. Linear beamformers (BFers) for relay stations of different cells are jointly designed to maintain, in a CoMP amplify-and-forward (AF) relaying manner, the target signal to interference-plus-noise ratios (SINR) at the cellular boundaries of this type of networks. Considering the feasibility in realizations and deployments, BFer designs are only allowed to use the channel state information (CSI) feedbacks of the wireless links inside a network. This kind of designs turns out to be a challenging optimization problem when attempting to maintain the SINR under the estimation and quantization errors in CSI. A conservative criterion and solution method is proposed for this robust design problem. Despite the conservativeness, the proposed method appears to provide an effective BFer design for CoMP AF relaying, either from the perspective of power consumption or from the viewpoints of BFers' complexity and feasibility in syntheses. Simulations also show that when applying the proposed CoMP AF relaying method in Automatic Retransmission reQuest (ARQ), data throughput can be efficiently increased for users close to the joint cellular boundaries inside a multi-cell network.en_US
dc.language.isoen_USen_US
dc.subjectRobust beamformingen_US
dc.subjectCoMPen_US
dc.subjectAF relayingen_US
dc.subjectdownlink multi-cell networksen_US
dc.subjectnetwork MIMOen_US
dc.titleRobust Linear Beamformer Designs for Coordinated Multi-Point AF Relaying in Downlink Multi-Cell Networksen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TWC.2012.072512.111764en_US
dc.identifier.journalIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONSen_US
dc.citation.volume11en_US
dc.citation.issue9en_US
dc.citation.spage3272en_US
dc.citation.epage3283en_US
dc.contributor.department電信工程研究所zh_TW
dc.contributor.departmentInstitute of Communications Engineeringen_US
dc.identifier.wosnumberWOS:000309188400024-
dc.citation.woscount2-
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