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Conference Paper: Coherent DS-SS receiver using exponentially weighted despreading function with imperfect power control in multipath Rayleigh fading environment

TitleCoherent DS-SS receiver using exponentially weighted despreading function with imperfect power control in multipath Rayleigh fading environment
Authors
KeywordsCommunications
Radio
Issue Date1998
PublisherIEEE.
Citation
Ieee International Symposium On Spread Spectrum Techniques & Applications, 1998, v. 1, p. 140-144 How to Cite?
AbstractIn this paper, a closed-form solution for the average bit error rate (BER) performance of a coherent DS-CDMA system with imperfect power control is derived for a multipath Rayleigh fading channel. The RAKE receiver under consideration employs exponentially weighted despreading function with an adjustable parameter γ optimized for multiple access interference rejection in multipath environment. 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 SINR̄ is much larger than commonly used rectangular despreading function (γ = 0). 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 γ tuned to maximize SINR̄ is equivalent to a reduction in the average signal to white noise ratio γ̄b and hence system performance can be compensated by increasing the transmitter power.
Persistent Identifierhttp://hdl.handle.net/10722/46113

 

DC FieldValueLanguage
dc.contributor.authorHuang, Yuejinen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2007-10-30T06:42:49Z-
dc.date.available2007-10-30T06:42:49Z-
dc.date.issued1998en_HK
dc.identifier.citationIeee International Symposium On Spread Spectrum Techniques & Applications, 1998, v. 1, p. 140-144en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46113-
dc.description.abstractIn this paper, a closed-form solution for the average bit error rate (BER) performance of a coherent DS-CDMA system with imperfect power control is derived for a multipath Rayleigh fading channel. The RAKE receiver under consideration employs exponentially weighted despreading function with an adjustable parameter γ optimized for multiple access interference rejection in multipath environment. 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 SINR̄ is much larger than commonly used rectangular despreading function (γ = 0). 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 γ tuned to maximize SINR̄ is equivalent to a reduction in the average signal to white noise ratio γ̄b and hence system performance can be compensated by increasing the transmitter power.en_HK
dc.format.extent467212 bytes-
dc.format.extent21012 bytes-
dc.format.extent21377 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE International Symposium on Spread Spectrum Techniques & Applicationsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©1998 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.subjectCommunicationsen_HK
dc.subjectRadioen_HK
dc.titleCoherent DS-SS receiver using exponentially weighted despreading function with imperfect power control in multipath Rayleigh fading environmenten_HK
dc.typeConference_Paperen_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/ISSSTA.1998.726213en_HK
dc.identifier.scopuseid_2-s2.0-0031622625en_HK
dc.identifier.hkuros45002-
dc.identifier.volume1en_HK
dc.identifier.spage140en_HK
dc.identifier.epage144en_HK
dc.identifier.scopusauthoridHuang, Yuejin=8118863900en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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