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Article: Analytical study of QAM with interference cancellation for high-speed multicode CDMA

TitleAnalytical study of QAM with interference cancellation for high-speed multicode CDMA
Authors
KeywordsChannel estimation
interference cancellation
multicode code-division multiple access (CDMA)
multipath interference
quadrature amplitude modulation (QAM)
Issue Date2005
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25
Citation
IEEE Transactions on Vehicular Technology, 2005, v. 54 n. 3, p. 1070-1080 How to Cite?
AbstractIn this paper, we consider the multilevel quadrature amplitude modulation (M-QAM) for forward link of multicode code-division multiple-access (CDMA) systems with interference cancellation to support high data rate service, and provide an analytical bit error rate (BER) performance of the system. In the current third-generation (3G) wide-band CDMA systems, in addition to multicode transmission, M-QAM is employed for high-speed downlink packet access (HSPDA) due to its high spectral efficiency. In frequency-selective fading channels, multipath interference seriously degrades the system performance, therefore interference cancellation technique is employed at the receiver. In this paper, an analytical closed-form BER of multicode CDMA systems with QAM is presented, where two important factors (channel estimation error and additive interference) on system performance are considered. Numerical results show that the system is very sensitive to additive multipath interference. With the help of interference cancellation technique, M-QAM can be adaptively employed in high signal-to-noise ratio cases to increase system throughput, within 5 MHz bandwidth. Meanwhile, simulation results are shown to illustrate the accuracy of the analytical method. Moreover, it is found that extra pilot power should be invested for more accurate channel estimation and consequently better BER performance when using the interference cancellation technique.
Persistent Identifierhttp://hdl.handle.net/10722/44808
ISSN
2015 Impact Factor: 2.243
2015 SCImago Journal Rankings: 1.203
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorXia, Ben_HK
dc.contributor.authorWang, JZen_HK
dc.date.accessioned2007-10-30T06:10:40Z-
dc.date.available2007-10-30T06:10:40Z-
dc.date.issued2005en_HK
dc.identifier.citationIEEE Transactions on Vehicular Technology, 2005, v. 54 n. 3, p. 1070-1080en_HK
dc.identifier.issn0018-9545en_HK
dc.identifier.urihttp://hdl.handle.net/10722/44808-
dc.description.abstractIn this paper, we consider the multilevel quadrature amplitude modulation (M-QAM) for forward link of multicode code-division multiple-access (CDMA) systems with interference cancellation to support high data rate service, and provide an analytical bit error rate (BER) performance of the system. In the current third-generation (3G) wide-band CDMA systems, in addition to multicode transmission, M-QAM is employed for high-speed downlink packet access (HSPDA) due to its high spectral efficiency. In frequency-selective fading channels, multipath interference seriously degrades the system performance, therefore interference cancellation technique is employed at the receiver. In this paper, an analytical closed-form BER of multicode CDMA systems with QAM is presented, where two important factors (channel estimation error and additive interference) on system performance are considered. Numerical results show that the system is very sensitive to additive multipath interference. With the help of interference cancellation technique, M-QAM can be adaptively employed in high signal-to-noise ratio cases to increase system throughput, within 5 MHz bandwidth. Meanwhile, simulation results are shown to illustrate the accuracy of the analytical method. Moreover, it is found that extra pilot power should be invested for more accurate channel estimation and consequently better BER performance when using the interference cancellation technique.en_HK
dc.format.extent404286 bytes-
dc.format.extent1787 bytes-
dc.format.extent2894 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25en_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.subjectChannel estimationen_HK
dc.subjectinterference cancellationen_HK
dc.subjectmulticode code-division multiple access (CDMA)en_HK
dc.subjectmultipath interferenceen_HK
dc.subjectquadrature amplitude modulation (QAM)en_HK
dc.titleAnalytical study of QAM with interference cancellation for high-speed multicode CDMAen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9545&volume=54&issue=3&spage=1070&epage=1080&date=2005&atitle=Analytical+study+of+QAM+with+interference+cancellation+for+high-speed+multicode+CDMAen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/TVT.2005.844656en_HK
dc.identifier.scopuseid_2-s2.0-21244434374-
dc.identifier.isiWOS:000229254800031-
dc.identifier.citeulike7523282-

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