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Conference Paper: Effective throughput for coded OFDM/SDMA systems with pilot-assisted channel estimation

TitleEffective throughput for coded OFDM/SDMA systems with pilot-assisted channel estimation
Authors
KeywordsCommunications
Radio
Issue Date2003
PublisherIEEE.
Citation
Ieee International Symposium On Personal, Indoor And Mobile Radio Communications, Pimrc, 2003, v. 2, p. 1139-1143 How to Cite?
AbstractThis paper investigates the performance of coded orthogonal frequency division multiflexing (OFDM) systems with receiving adaptive array, through which multiple users with single-element transmitting antenna are supported simultaneously by spatial division multiple access (SDMA). We characterize the performance of an OFDM/SDMA systems by effective throughput, which is essentially the average number of data bits in an OFDM symbol after considering the erroneous packet transmissions and modulation scheme by excluding the overhead from coding and pilots for channel estimation. Optimization of system operating parameters can be achieved through the maximization of effective throughput. The focus of this paper is to study the impact of pilot density and the number of users on the performance of coded OFDM/SDMA systems. Through extensive computer simulation, we how that using more pilots always improves bit error rate (BER) performance, but may reduce effective throughput. The optimal number of pilots together with the modulation scheme can he determined by maximizing the effective throughput for given operating signal-to-noise ratio (SNR). It is also shown that the system performance degrades gradually with the increase of users. For a system with a six-element adaptive array, the effective throughput with 5 users is lower than that with 4 users for a certain range of SNR. This indicates that the maximal number of users supportable by the system should consider the effective throughput. © 2003 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/46494
References

 

DC FieldValueLanguage
dc.contributor.authorShen, Den_HK
dc.contributor.authorWong, KKen_HK
dc.contributor.authorPan, Zen_HK
dc.contributor.authorLi, VOKen_HK
dc.date.accessioned2007-10-30T06:51:13Z-
dc.date.available2007-10-30T06:51:13Z-
dc.date.issued2003en_HK
dc.identifier.citationIeee International Symposium On Personal, Indoor And Mobile Radio Communications, Pimrc, 2003, v. 2, p. 1139-1143en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46494-
dc.description.abstractThis paper investigates the performance of coded orthogonal frequency division multiflexing (OFDM) systems with receiving adaptive array, through which multiple users with single-element transmitting antenna are supported simultaneously by spatial division multiple access (SDMA). We characterize the performance of an OFDM/SDMA systems by effective throughput, which is essentially the average number of data bits in an OFDM symbol after considering the erroneous packet transmissions and modulation scheme by excluding the overhead from coding and pilots for channel estimation. Optimization of system operating parameters can be achieved through the maximization of effective throughput. The focus of this paper is to study the impact of pilot density and the number of users on the performance of coded OFDM/SDMA systems. Through extensive computer simulation, we how that using more pilots always improves bit error rate (BER) performance, but may reduce effective throughput. The optimal number of pilots together with the modulation scheme can he determined by maximizing the effective throughput for given operating signal-to-noise ratio (SNR). It is also shown that the system performance degrades gradually with the increase of users. For a system with a six-element adaptive array, the effective throughput with 5 users is lower than that with 4 users for a certain range of SNR. This indicates that the maximal number of users supportable by the system should consider the effective throughput. © 2003 IEEE.en_HK
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dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.relation.ispartofIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRCen_HK
dc.rights©2003 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectCommunicationsen_HK
dc.subjectRadioen_HK
dc.titleEffective throughput for coded OFDM/SDMA systems with pilot-assisted channel estimationen_HK
dc.typeConference_Paperen_HK
dc.identifier.emailLi, VOK:vli@eee.hku.hken_HK
dc.identifier.authorityLi, VOK=rp00150en_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/PIMRC.2003.1260289en_HK
dc.identifier.scopuseid_2-s2.0-33645730179en_HK
dc.identifier.hkuros92300-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33645730179&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume2en_HK
dc.identifier.spage1139en_HK
dc.identifier.epage1143en_HK
dc.identifier.scopusauthoridShen, D=7401738166en_HK
dc.identifier.scopusauthoridWong, KK=7404759940en_HK
dc.identifier.scopusauthoridPan, Z=7402644862en_HK
dc.identifier.scopusauthoridLi, VOK=7202621685en_HK

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