Browse

Low-Complexity Unitary Preprocessing Scheme for Limited Feedback Multiuser MIMO Systems

DC Field Value Language
dc.contributor.authorLee, Hyoungjoo-
dc.contributor.authorSohn, Illsoo-
dc.contributor.authorLee, Kwang Bok-
dc.date.accessioned2010-04-09T06:54:35Z-
dc.date.available2010-04-09T06:54:35Z-
dc.date.issued2009-10-
dc.identifier.citationThe 15th Asia-Pacific Conference on Communications (APCC 2009), Shanghai, pp. 269-272en
dc.identifier.urihttps://hdl.handle.net/10371/62878-
dc.description.abstractIn this paper, a practical downlink multiuser
multiple-input multiple-output (MU-MIMO) scheme with lowrate
feedback channel is considered. Firstly, we propose a
preferred-beam feedback method, which effectively conveys information
of user channel and inter-user interference. Secondly,
we propose a new low-complexity method to compute unitary
preprocessing matrix based on the feedback method. The proposed
method reduces considerably computational complexity by
utilizing SVD operation compared to the conventional unitary
preprocessing scheme. Finally, for the case that the number of
users exceeds the number of transmit antennas, we provide two
simple user selection algorithms to exploit multiuser diversity.
Numerical results show that the proposed low-complexity unitary
preprocessing scheme achieves higher sum-rate than previous
linear preprocessing schemes, especially at low SNR or with small
number of active users.
en
dc.description.sponsorshipThis work was supported in part by the Samsung Advanced Institute
of Technology (SAIT) and in part by the Korea Science and Engineering
Foundation (KOSEF) through the National Research Lab. (NRL) Program
funded by the Ministry of Science and Technology (No. M10300000316-
06J0000-31610)
en
dc.language.isoenen
dc.subjectMultiuser MIMOen
dc.subjectMIMO broadcast channelen
dc.subjectlinear preprocessingen
dc.subjectunitary preprocessingen
dc.subjectlimited-feedbacken
dc.titleLow-Complexity Unitary Preprocessing Scheme for Limited Feedback Multiuser MIMO Systemsen
dc.typeArticleen
dc.contributor.AlternativeAuthor이형주-
dc.contributor.AlternativeAuthor손일수-
dc.contributor.AlternativeAuthor이광복-
dc.identifier.doi10.1109/APCC.2009.5375638-
Appears in Collections:
College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Electrical and Computer Engineering (전기·정보공학부)Journal Papers (저널논문_전기·정보공학부)
Files in This Item:
There are no files associated with this item.
  • mendeley

Items in S-Space are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse