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Article: MIMO-OFCDM systems with joint iterative detection and optimal power allocation

TitleMIMO-OFCDM systems with joint iterative detection and optimal power allocation
Authors
Keywordschannel estimation.
Iterative interference cancellation
MIMO
Multi-code.
OFCDM
Optimal power allocation two-dimensional spreading
Issue Date2008
PublisherIEEE.
Citation
Ieee Transactions On Wireless Communications, 2008, v. 7 n. 12, p. 5504-5516 How to Cite?
AbstractThis paper investigates the orthogonal frequency and code division multiplexing (OFCDM) systems with multiple input multiple output multiplexing (MIMO-OFCDM) and multicode transmission. Combining the iterative detection in the space domain and the hybrid multi-code interference (MDI) cancellation and minimum mean square error (MMSE) detection in the frequency domain, a joint iterative detection is proposed, which enables space and frequency diversity gains to be jointly exploited. Moreover, using a two-dimensional (2-D) averaging channel estimation algorithm, a close form expression is derived for the optimal power allocation between the pilot and all data channels that achieves the best system performance. It is shown that the optimal power ratio mainly depends on the channel estimation algorithm, the number of transmit antennas as well as the number of pilot and data symbols in a packet, but is not sensitive to the changes in signal-to-noise ratio (SNR) and diversity gains. Simulations are conducted to verify the derived optimal power ratio and study the performance of the proposed joint detection algorithm. It is shown that considerable improvement can be obtained when the number of loops in the joint iterative detection increases. Moreover, the system performance is enhanced significantly when the frequency domain spreading factor, N/sub F/, increases. © 2006 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/58848
ISSN
2015 Impact Factor: 2.925
2015 SCImago Journal Rankings: 2.340
ISI Accession Number ID
Funding AgencyGrant Number
Research Grants Council of Hong KongHKU7164/04E
Funding Information:

This work was supported by a grant HKU7164/04E from The Research Grants Council of Hong Kong.

References

 

DC FieldValueLanguage
dc.contributor.authorZhou, Yen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2010-05-31T03:37:58Z-
dc.date.available2010-05-31T03:37:58Z-
dc.date.issued2008en_HK
dc.identifier.citationIeee Transactions On Wireless Communications, 2008, v. 7 n. 12, p. 5504-5516en_HK
dc.identifier.issn1536-1276en_HK
dc.identifier.urihttp://hdl.handle.net/10722/58848-
dc.description.abstractThis paper investigates the orthogonal frequency and code division multiplexing (OFCDM) systems with multiple input multiple output multiplexing (MIMO-OFCDM) and multicode transmission. Combining the iterative detection in the space domain and the hybrid multi-code interference (MDI) cancellation and minimum mean square error (MMSE) detection in the frequency domain, a joint iterative detection is proposed, which enables space and frequency diversity gains to be jointly exploited. Moreover, using a two-dimensional (2-D) averaging channel estimation algorithm, a close form expression is derived for the optimal power allocation between the pilot and all data channels that achieves the best system performance. It is shown that the optimal power ratio mainly depends on the channel estimation algorithm, the number of transmit antennas as well as the number of pilot and data symbols in a packet, but is not sensitive to the changes in signal-to-noise ratio (SNR) and diversity gains. Simulations are conducted to verify the derived optimal power ratio and study the performance of the proposed joint detection algorithm. It is shown that considerable improvement can be obtained when the number of loops in the joint iterative detection increases. Moreover, the system performance is enhanced significantly when the frequency domain spreading factor, N/sub F/, increases. © 2006 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE Transactions on Wireless Communicationsen_HK
dc.rightsIEEE Transactions on Wireless Communications. Copyright © IEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2008 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.-
dc.subjectchannel estimation.en_HK
dc.subjectIterative interference cancellationen_HK
dc.subjectMIMOen_HK
dc.subjectMulti-code.en_HK
dc.subjectOFCDMen_HK
dc.subjectOptimal power allocation two-dimensional spreadingen_HK
dc.titleMIMO-OFCDM systems with joint iterative detection and optimal power allocationen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1536-1276&volume=7&issue=12&spage=5504&epage=5516&date=2008&atitle=MIMO-OFCDM+systems+with+joint+iterative+detection+and+optimal+power+allocationen_HK
dc.identifier.emailZhou, Y:yqzhou@eee.hku.hken_HK
dc.identifier.emailNg, TS:tsng@eee.hku.hken_HK
dc.identifier.authorityZhou, Y=rp00214en_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/T-WC.2008.071462en_HK
dc.identifier.scopuseid_2-s2.0-58149122695en_HK
dc.identifier.hkuros164443en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-58149122695&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume7en_HK
dc.identifier.issue12en_HK
dc.identifier.spage5504en_HK
dc.identifier.epage5516en_HK
dc.identifier.isiWOS:000261924100045-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZhou, Y=7405367062en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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