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Conference Paper: Multi-user MIMO antenna systems using semi-orthogonal space division multiplexing and single-user QR-triangular detection

TitleMulti-user MIMO antenna systems using semi-orthogonal space division multiplexing and single-user QR-triangular detection
Authors
KeywordsEngineering
Electrical engineering
Issue Date2003
PublisherIEEE.
Citation
Icassp, Ieee International Conference On Acoustics, Speech And Signal Processing - Proceedings, 2003, v. 4, p. 812-815 How to Cite?
AbstractOrthogonal space division multiplexing (OSDM) can be achieved by utilizing multiple antennas at the base station (BS) and all mobile stations (MS) (or multi-user MIMO) jointly. Recently in [1, 2], two iterative methods have been proposed to obtain the antenna weighting for realizing OSDM in the downlink. However, both suffer from high complexity if the number of BS antennas or users involved is large, as the computational complexity grows with the number of users to the fourth power. In this paper, by allowing the signal streams for a user to be non-orthogonal, we propose a semi-OSDM system for complexity reduction. In the proposed semi-OSDM system, the signals of multiple users are still orthogonal, but for each user, the multiple signaling streams are made triangular instead so that a simple backward substitution with symbol cancellation can be performed to maintain an accurate signal detection. Remarkably, the antenna weighting for semi-OSDM can be expressed in a closed form. Simulation results show that semi-OSDM has mild performance degradation, but it requires much lower computational complexity (by an order of magnitude) when compared with existing OSDM systems.
Persistent Identifierhttp://hdl.handle.net/10722/46364
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorPan, Zen_HK
dc.contributor.authorWong, KKen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2007-10-30T06:48:14Z-
dc.date.available2007-10-30T06:48:14Z-
dc.date.issued2003en_HK
dc.identifier.citationIcassp, Ieee International Conference On Acoustics, Speech And Signal Processing - Proceedings, 2003, v. 4, p. 812-815en_HK
dc.identifier.issn0736-7791en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46364-
dc.description.abstractOrthogonal space division multiplexing (OSDM) can be achieved by utilizing multiple antennas at the base station (BS) and all mobile stations (MS) (or multi-user MIMO) jointly. Recently in [1, 2], two iterative methods have been proposed to obtain the antenna weighting for realizing OSDM in the downlink. However, both suffer from high complexity if the number of BS antennas or users involved is large, as the computational complexity grows with the number of users to the fourth power. In this paper, by allowing the signal streams for a user to be non-orthogonal, we propose a semi-OSDM system for complexity reduction. In the proposed semi-OSDM system, the signals of multiple users are still orthogonal, but for each user, the multiple signaling streams are made triangular instead so that a simple backward substitution with symbol cancellation can be performed to maintain an accurate signal detection. Remarkably, the antenna weighting for semi-OSDM can be expressed in a closed form. Simulation results show that semi-OSDM has mild performance degradation, but it requires much lower computational complexity (by an order of magnitude) when compared with existing OSDM systems.en_HK
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dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedingsen_HK
dc.rights©2003 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectEngineeringen_HK
dc.subjectElectrical engineeringen_HK
dc.titleMulti-user MIMO antenna systems using semi-orthogonal space division multiplexing and single-user QR-triangular detectionen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1520-6149&volume=4&spage=812&epage=815&date=2003&atitle=Multi-user+MIMO+antenna+systems+using+semi-orthogonal+space+division+multiplexing+and+single-user+QR-triangular+detectionen_HK
dc.identifier.emailNg, TS:tsng@eee.hku.hken_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.scopuseid_2-s2.0-0141744701en_HK
dc.identifier.hkuros81549-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0141744701&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume4en_HK
dc.identifier.spage812en_HK
dc.identifier.epage815en_HK
dc.identifier.scopusauthoridPan, Z=7402644862en_HK
dc.identifier.scopusauthoridWong, KK=7404759940en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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