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Article: DS-CDMA with power control error using weighted despreading sequences over a multipath rayleigh fading channel

TitleDS-CDMA with power control error using weighted despreading sequences over a multipath rayleigh fading channel
Authors
Issue Date1999
PublisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25
Citation
Ieee Transactions On Vehicular Technology, 1999, v. 48 n. 4, p. 1067-1079 How to Cite?
AbstractIn this paper, closed-form solutions for the average bit error rate (BER) performance of a direct-sequence codedivision multiple-access system with imperfect power control are derived for both coherent and noncoherent receptions operating over a multipath Rayleigh fading channel. The RAKE structure receivers under consideration employ despreading sequences weighted by adjustable exponential chip waveforms optimized for multiple-access interference rejection. The chip-weighting waveforms employed are determined only by one parameter γ which leads to easy tuning of the waveforms in practice to achieve the best performance. The results indicate that the number of active users supported at a given BER for the case of γ tuned to maximize the average signal to interference plus noise ratio H is much larger than the case of γ = 0 (fixed or rectangular despreading sequence). It is shown that imperfect power control affects the irreducible BER for the case of γ = 0. On the other hand, the effect of imperfect power control on BER performance for the case of γ tuned to maximize Ĥ is equivalent to a reduction in the average signal-to-noise ratio, and, hence, system performance can be compensated by increasing the transmitter power. It is further shown that the effect due to imperfect power control on BER performance is significant while that on the maximum value of Ĥ obtained by tuning γ is rather insignificant. Index Terms-Code-division multiple access, RAKE receivers, spread-spectrum communication. © 1999 IEEE Publisher Item Identifier S 0018-9545(99)05722-9.
Persistent Identifierhttp://hdl.handle.net/10722/42840
ISSN
2015 Impact Factor: 2.243
2015 SCImago Journal Rankings: 1.203
References

 

DC FieldValueLanguage
dc.contributor.authorHuang, Yen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2007-03-23T04:33:11Z-
dc.date.available2007-03-23T04:33:11Z-
dc.date.issued1999en_HK
dc.identifier.citationIeee Transactions On Vehicular Technology, 1999, v. 48 n. 4, p. 1067-1079en_HK
dc.identifier.issn0018-9545en_HK
dc.identifier.urihttp://hdl.handle.net/10722/42840-
dc.description.abstractIn this paper, closed-form solutions for the average bit error rate (BER) performance of a direct-sequence codedivision multiple-access system with imperfect power control are derived for both coherent and noncoherent receptions operating over a multipath Rayleigh fading channel. The RAKE structure receivers under consideration employ despreading sequences weighted by adjustable exponential chip waveforms optimized for multiple-access interference rejection. The chip-weighting waveforms employed are determined only by one parameter γ which leads to easy tuning of the waveforms in practice to achieve the best performance. The results indicate that the number of active users supported at a given BER for the case of γ tuned to maximize the average signal to interference plus noise ratio H is much larger than the case of γ = 0 (fixed or rectangular despreading sequence). It is shown that imperfect power control affects the irreducible BER for the case of γ = 0. On the other hand, the effect of imperfect power control on BER performance for the case of γ tuned to maximize Ĥ is equivalent to a reduction in the average signal-to-noise ratio, and, hence, system performance can be compensated by increasing the transmitter power. It is further shown that the effect due to imperfect power control on BER performance is significant while that on the maximum value of Ĥ obtained by tuning γ is rather insignificant. Index Terms-Code-division multiple access, RAKE receivers, spread-spectrum communication. © 1999 IEEE Publisher Item Identifier S 0018-9545(99)05722-9.en_HK
dc.format.extent421507 bytes-
dc.format.extent8772 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=25en_HK
dc.relation.ispartofIEEE Transactions on Vehicular Technologyen_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.titleDS-CDMA with power control error using weighted despreading sequences over a multipath rayleigh fading channelen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0018-9545&volume=48&issue=4&spage=1067&epage=1079&date=1999&atitle=DS-CDMA+with+power+control+error+using+weighted+despreading+sequences+over+a+multipath+Rayleigh+fading+channelen_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.doi10.1109/25.775356en_HK
dc.identifier.scopuseid_2-s2.0-0032607929en_HK
dc.identifier.hkuros52513-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0032607929&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume48en_HK
dc.identifier.issue4en_HK
dc.identifier.spage1067en_HK
dc.identifier.epage1079en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridHuang, Y=8118863900en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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