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dc.contributor.authorLin, Yuan-Binen_US
dc.contributor.authorWu, Wu-Hsiuen_US
dc.contributor.authorSu, Yu T.en_US
dc.date.accessioned2014-12-08T15:29:04Z-
dc.date.available2014-12-08T15:29:04Z-
dc.date.issued2012en_US
dc.identifier.isbn978-1-4673-2569-1en_US
dc.identifier.issn2166-9570en_US
dc.identifier.urihttp://hdl.handle.net/11536/20969-
dc.description.abstractThis paper considers the problem of resource allocation for weighted sum rate maximization in a decode-and-forward (DF) based multi-hop MIMO-OFDMA systems. The optimal solution of joint subcarrier assignment (user and relay selections) and power allocation is obtained by solving a dual problem. We derive the necessary conditions for the optimal power allocation and propose a suboptimal algorithm with a closed-form based general power allocation solution. This suboptimal algorithm, as numerical results verify that, suffers from minor performance loss against that achievable by the optimal solution when SNR is high. It is observed that the corresponding closed-form power allocation yields 8% performance gain when compared with the equal power allocation.en_US
dc.language.isoen_USen_US
dc.subjectMIMO-OFDMAen_US
dc.subjectDecode-and-Forwarden_US
dc.subjectrelayen_US
dc.subjectmulti-hopen_US
dc.subjectresource allocationen_US
dc.titleOptimal and Suboptimal Resource Allocations for Multi-Hop MIMO-OFDMA Networksen_US
dc.typeProceedings Paperen_US
dc.identifier.journal2012 IEEE 23RD INTERNATIONAL SYMPOSIUM ON PERSONAL INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC)en_US
dc.citation.spage502en_US
dc.citation.epage506en_US
dc.contributor.department傳播研究所zh_TW
dc.contributor.departmentInstitute of Communication Studiesen_US
dc.identifier.wosnumberWOS:000312809400085-
Appears in Collections:Conferences Paper