File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Space division multiple access with a sum feedback rate constraint

TitleSpace division multiple access with a sum feedback rate constraint
Authors
Issue Date2007
Citation
IEEE Transactions on Signal Processing, 2007, v. 55 n. 7 II, p. 3879-3891 How to Cite?
AbstractOn a multiantenna broadcast channel, simultaneous transmission to multiple users by joint beamforming and scheduling is capable of achieving high throughput, which grows double logarithmically with the number of users. The sum rate for channel state information (CSI) feedback, however, increases linearly with the number of users, reducing the effective uplink capacity. To address this problem, a novel space division multiple access (SDMA) design is proposed, where the sum feedback rate is upper bounded by a constant. This design consists of algorithms for CSI quantization, threshold-based CSI feedback, and joint beamforming and scheduling. The key feature of the proposed approach is the use of feedback thresholds to select feedback users with large channel gains and small CSI quantization errors such that the sum feedback rate constraint is satisfied. Despite this constraint, the proposed SDMA design is shown to achieve a sum capacity growth rate close to the optimal one. Moreover, the feedback overflow probability for this design is found to decrease exponentially with the difference between the allowable and the average sum feedback rates. Numerical results show that the proposed SDMA design is capable of attaining higher sum capacities than existing ones, even though the sum feedback rate is bounded. © 2007 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/194190
ISSN
2015 Impact Factor: 2.624
2015 SCImago Journal Rankings: 2.004
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorHuang, K-
dc.contributor.authorHeath Jr, RW-
dc.contributor.authorAndrews, JG-
dc.date.accessioned2014-01-30T03:32:17Z-
dc.date.available2014-01-30T03:32:17Z-
dc.date.issued2007-
dc.identifier.citationIEEE Transactions on Signal Processing, 2007, v. 55 n. 7 II, p. 3879-3891-
dc.identifier.issn1053-587X-
dc.identifier.urihttp://hdl.handle.net/10722/194190-
dc.description.abstractOn a multiantenna broadcast channel, simultaneous transmission to multiple users by joint beamforming and scheduling is capable of achieving high throughput, which grows double logarithmically with the number of users. The sum rate for channel state information (CSI) feedback, however, increases linearly with the number of users, reducing the effective uplink capacity. To address this problem, a novel space division multiple access (SDMA) design is proposed, where the sum feedback rate is upper bounded by a constant. This design consists of algorithms for CSI quantization, threshold-based CSI feedback, and joint beamforming and scheduling. The key feature of the proposed approach is the use of feedback thresholds to select feedback users with large channel gains and small CSI quantization errors such that the sum feedback rate constraint is satisfied. Despite this constraint, the proposed SDMA design is shown to achieve a sum capacity growth rate close to the optimal one. Moreover, the feedback overflow probability for this design is found to decrease exponentially with the difference between the allowable and the average sum feedback rates. Numerical results show that the proposed SDMA design is capable of attaining higher sum capacities than existing ones, even though the sum feedback rate is bounded. © 2007 IEEE.-
dc.languageeng-
dc.relation.ispartofIEEE Transactions on Signal Processing-
dc.titleSpace division multiple access with a sum feedback rate constraint-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/TSP.2007.894245-
dc.identifier.scopuseid_2-s2.0-34347372828-
dc.identifier.volume55-
dc.identifier.issue7 II-
dc.identifier.spage3879-
dc.identifier.epage3891-
dc.identifier.isiWOS:000247488900026-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats