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Article: Variable rate adaptive modulation for DS-CDMA

TitleVariable rate adaptive modulation for DS-CDMA
Authors
Issue Date1999
PublisherIEEE.
Citation
IEEE Transactions on Communications, 1999, v. 47 n. 4, p. 577-589 How to Cite?
AbstractAn adaptive coding scheme is introduced for a discrete sequence code-division multiple-access system. The system uses noncoherent M-ary orthogonal modulation with RAKE receiver and power control. Both a fast fading channel and a combined fast fading, shadowing and power control channel are considered. Analytical bounds and simulations are done to evaluate the performance of the system. It is found that there is significant improvement in the average throughput and the bit-error-rate performance in the adaptive coding scheme. The amount of improvement drops with the increase of diversity branches used. More importantly, it is found that adaptive coding scheme is relatively robust to shadowing, while fix-rate codes are ineffective in the shadowing environment. Finally, adaptive coding scheme is found to be robust to mobile speed, feedback delay, and finite interleaving depth.
Persistent Identifierhttp://hdl.handle.net/10722/42807
ISSN
2015 Impact Factor: 2.298
2015 SCImago Journal Rankings: 1.659

 

DC FieldValueLanguage
dc.contributor.authorLau, KNen_HK
dc.contributor.authorMaric, SVen_HK
dc.date.accessioned2007-03-23T04:32:34Z-
dc.date.available2007-03-23T04:32:34Z-
dc.date.issued1999en_HK
dc.identifier.citationIEEE Transactions on Communications, 1999, v. 47 n. 4, p. 577-589en_HK
dc.identifier.issn0090-6778en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42807-
dc.description.abstractAn adaptive coding scheme is introduced for a discrete sequence code-division multiple-access system. The system uses noncoherent M-ary orthogonal modulation with RAKE receiver and power control. Both a fast fading channel and a combined fast fading, shadowing and power control channel are considered. Analytical bounds and simulations are done to evaluate the performance of the system. It is found that there is significant improvement in the average throughput and the bit-error-rate performance in the adaptive coding scheme. The amount of improvement drops with the increase of diversity branches used. More importantly, it is found that adaptive coding scheme is relatively robust to shadowing, while fix-rate codes are ineffective in the shadowing environment. Finally, adaptive coding scheme is found to be robust to mobile speed, feedback delay, and finite interleaving depth.en_HK
dc.format.extent506047 bytes-
dc.format.extent26112 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/msword-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©1999 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.titleVariable rate adaptive modulation for DS-CDMAen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0090-6778&volume=47&issue=4&spage=577&epage=589&date=1999&atitle=Variable+rate+adaptive+modulation+for+DS-CDMAen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/26.764931en_HK
dc.identifier.scopuseid_2-s2.0-0032654958-
dc.identifier.hkuros45168-

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