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dc.contributor.authorTang, Ti-Wenen_US
dc.contributor.authorTien, Hsiao-Tingen_US
dc.contributor.authorLu, Hsiao-feng (Francis)en_US
dc.date.accessioned2015-12-02T02:59:39Z-
dc.date.available2015-12-02T02:59:39Z-
dc.date.issued2015-11-01en_US
dc.identifier.issn0018-9448en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TIT.2015.2478472en_US
dc.identifier.urihttp://hdl.handle.net/11536/128394-
dc.description.abstractIn this paper, two selection schemes are proposed for coded transmission over multiple-input multiple-output (MIMO) multiple-access channels (MAC) to yield a much higher diversity-multiplexing gain tradeoff (DMT) performance. These schemes require a channel feedback, but at an extremely low rate. The first scheme is based on user selection and can be easily implemented in the existing MIMO-MAC systems. Upper bounds on the minimal computational complexity required by sphere decoders to decode DMT-optimal codes for this scheme as well as for MIMO MAC without feedback are given. It is shown that this scheme can offer both a much larger DMT and an exponential reduction on decoding complexity, compared with the latter. The second scheme selects jointly the users and their transmit antennas. It requires an additional design of rate assignments for performance optimization. A very general framework on the design of optimal rate assignments is thus provided. It is shown that this scheme can yield DMT performances far superior to the optimal MIMO-MAC DMT without channel feedback. The simulation results confirm that in some cases, this scheme can provide an astonishing SNR gain of 14.64 dB at outage probability 10(-6) compared with the optimal MIMO-MAC coding schemes without feedback.en_US
dc.language.isoen_USen_US
dc.subjectMIMO multiple-access channelen_US
dc.subjectfeedback channelen_US
dc.subjectdiversity-multiplexing tradeoffen_US
dc.subjectselection algorithmen_US
dc.subjectrate adaptationen_US
dc.titleSelection and Rate-Adaptation Schemes for MIMO Multiple-Access Channels With Low-Rate Channel Feedbacken_US
dc.typeArticleen_US
dc.identifier.doi10.1109/TIT.2015.2478472en_US
dc.identifier.journalIEEE TRANSACTIONS ON INFORMATION THEORYen_US
dc.citation.volume61en_US
dc.citation.issue11en_US
dc.citation.spage5948en_US
dc.citation.epage5975en_US
dc.contributor.department電機資訊學士班zh_TW
dc.contributor.departmentUndergraduate Honors Program of Electrical Engineering and Computer Scienceen_US
dc.identifier.wosnumberWOS:000363256500017en_US
dc.citation.woscount0en_US
Appears in Collections:Articles