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Article: Effect of channel-estimation error on QAM systems with antenna diversity

TitleEffect of channel-estimation error on QAM systems with antenna diversity
Authors
KeywordsAntenna diversity
channel estimation
multilevel quadrature amplitude modulation (M-QAM)
pilot-symbolassisted modulation (PSAM)
Rayleigh fading
Issue Date2005
PublisherIEEE.
Citation
IEEE Transactions on Communications, 2005, v. 53 n. 3, p. 481-488 How to Cite?
AbstractThis paper studies the effect of channel estimation error and antenna diversity on multilevel quadrature amplitude modulation (M-QAM) systems over Rayleigh fading channels. Based on the characteristic function method, a general closed-form bit-error rate (BER) for M-QAM systems is presented. The effect of the inaccurate channel estimation on the performance for pilot-symbol-assisted modulation M-QAM systems with antenna diversity is investigated. Simulation results for M-QAM (M = 4, 16, 64, 256, etc.) show that the analytical method can accurately estimate the system performance. Moreover, numerical results show that with the antenna-diversity technique, the BER performance improves significantly, especially in perfect channel-estimation cases. It is also found that the channel-estimation error limits the benefit of antenna diversity. By increasing the length of the channel estimator and the amplitude of the pilot symbol, more accurate channel estimation can be achieved, so that the BER performance is improved.
Persistent Identifierhttp://hdl.handle.net/10722/44770
ISSN
2015 Impact Factor: 2.298
2015 SCImago Journal Rankings: 1.659
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXia, Ben_HK
dc.contributor.authorWang, JZen_HK
dc.date.accessioned2007-10-30T06:09:50Z-
dc.date.available2007-10-30T06:09:50Z-
dc.date.issued2005en_HK
dc.identifier.citationIEEE Transactions on Communications, 2005, v. 53 n. 3, p. 481-488en_HK
dc.identifier.issn0090-6778en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44770-
dc.description.abstractThis paper studies the effect of channel estimation error and antenna diversity on multilevel quadrature amplitude modulation (M-QAM) systems over Rayleigh fading channels. Based on the characteristic function method, a general closed-form bit-error rate (BER) for M-QAM systems is presented. The effect of the inaccurate channel estimation on the performance for pilot-symbol-assisted modulation M-QAM systems with antenna diversity is investigated. Simulation results for M-QAM (M = 4, 16, 64, 256, etc.) show that the analytical method can accurately estimate the system performance. Moreover, numerical results show that with the antenna-diversity technique, the BER performance improves significantly, especially in perfect channel-estimation cases. It is also found that the channel-estimation error limits the benefit of antenna diversity. By increasing the length of the channel estimator and the amplitude of the pilot symbol, more accurate channel estimation can be achieved, so that the BER performance is improved.en_HK
dc.format.extent481940 bytes-
dc.format.extent2894 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2005 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.subjectAntenna diversityen_HK
dc.subjectchannel estimationen_HK
dc.subjectmultilevel quadrature amplitude modulation (M-QAM)en_HK
dc.subjectpilot-symbolassisted modulation (PSAM)en_HK
dc.subjectRayleigh fadingen_HK
dc.titleEffect of channel-estimation error on QAM systems with antenna diversityen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0090-6778&volume=53&issue=3&spage=481&epage=488&date=2005&atitle=Effect+of+channel-estimation+error+on+QAM+systems+with+antenna+diversityen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TCOMM.2005.843423en_HK
dc.identifier.scopuseid_2-s2.0-17644420003-
dc.identifier.isiWOS:000228095000016-

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