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dc.contributor.authorWu, Sau-Hsuanen_US
dc.contributor.authorChiu, Lin-Kaien_US
dc.contributor.authorLin, Ko-Yenen_US
dc.contributor.authorChang, Tsung-Huien_US
dc.date.accessioned2014-12-08T15:33:05Z-
dc.date.available2014-12-08T15:33:05Z-
dc.date.issued2013-09-01en_US
dc.identifier.issn1536-1276en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TWC.2013.072313.121749en_US
dc.identifier.urihttp://hdl.handle.net/11536/23038-
dc.description.abstractA hybrid architecture is presented for downlink beamforming (BF) with phased antenna arrays (PAA) in indoor 60 GHz spatial division multiple access (SDMA) channels. To manage the multiple access and inter-symbol interferences (MAI/ISI) encountered in SDMA with limited feedbacks, a cost-effective time-domain hybrid BF (HBF) method is presented to exploit the directivity provided by PAA in radio frequency (RF) beam patterns and the spatial diversity offered by multiple baseband processing modules. To maintain signal qualities under unpredictable MAI/ISI in wireless multimedia streaming to which indoor 60 GHz radio mainly applies, robust beamformers are designed to maintain the signal to interference-plus-noise ratio (SINR) for each user with minimum total transmit power. The percentages in which the target SINRs can be satisfied with the proposed HBF schemes are found sensitive to uncertainties in the phase shifters of PAA. Two kinds of robust formulations are thus proposed to jointly combat the MAI, ISI and phase uncertainties. Robust beamformers with semi closed-form expressions can be obtained with a nonlinear kind of them, whose SINR satisfaction ratio can attain 80% or more by extensive simulations in an indoor two-user 60 GHz environment if RF beam patterns of the users do not highly overlap in space.en_US
dc.language.isoen_USen_US
dc.subject60 GHz radioen_US
dc.subjectrobust downlink beamformingen_US
dc.subjectadaptive antenna arraysen_US
dc.subjectSDMA and MU-MIMOen_US
dc.titleRobust Hybrid Beamforming with Phased Antenna Arrays for Downlink SDMA in Indoor 60 GHz Channelsen_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TWC.2013.072313.121749en_US
dc.identifier.journalIEEE TRANSACTIONS ON WIRELESS COMMUNICATIONSen_US
dc.citation.volume12en_US
dc.citation.issue9en_US
dc.citation.spage4542en_US
dc.citation.epage4557en_US
dc.contributor.department電信工程研究所zh_TW
dc.contributor.departmentInstitute of Communications Engineeringen_US
dc.identifier.wosnumberWOS:000325221400028-
dc.citation.woscount2-
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