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Conference Paper: Pilot-based carrier frequency offset estimation in OFDM systems

TitlePilot-based carrier frequency offset estimation in OFDM systems
Authors
Issue Date2003
PublisherIEEE.
Citation
Joint Conference on the 4th International Conference on Information, Communications and Signal Processing and the 4th Pacific Rim Conference on Multimedia Proceedings, Singapore, 15-18 Dec 2003, v. 2, p. 847-878 How to Cite?
AbstractThe ability of OFDM to mitigate channel frequency selectivity is impaired by its vulnerability to carrier frequency offset (CFO). In this paper, a new pilot-based carrier frequency offset estimation scheme for frequency selective slowly-varying channels is proposed. This scheme exploits the inherent redundancy introduced by the OFDM signaling and no additional training symbol is needed. The synchronization process is to minimize a LMS-like cost function, which essentially quantifies the variance of the pilot tones across several OFDM symbols. Moreover, a reduced-complexity estimator is also developed to reduce the implementation complexity. The CFO estimation range can span the whole OFDM signal bandwidth by nonuniformly distributing the embedded pilot tones in the frequency domain. Computer simulation results show that the performance of the proposed estimator can meet the requirement of typical OFDM communication systems.
Persistent Identifierhttp://hdl.handle.net/10722/46447

 

DC FieldValueLanguage
dc.contributor.authorLi, Cen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2007-10-30T06:50:03Z-
dc.date.available2007-10-30T06:50:03Z-
dc.date.issued2003en_HK
dc.identifier.citationJoint Conference on the 4th International Conference on Information, Communications and Signal Processing and the 4th Pacific Rim Conference on Multimedia Proceedings, Singapore, 15-18 Dec 2003, v. 2, p. 847-878en_HK
dc.identifier.urihttp://hdl.handle.net/10722/46447-
dc.description.abstractThe ability of OFDM to mitigate channel frequency selectivity is impaired by its vulnerability to carrier frequency offset (CFO). In this paper, a new pilot-based carrier frequency offset estimation scheme for frequency selective slowly-varying channels is proposed. This scheme exploits the inherent redundancy introduced by the OFDM signaling and no additional training symbol is needed. The synchronization process is to minimize a LMS-like cost function, which essentially quantifies the variance of the pilot tones across several OFDM symbols. Moreover, a reduced-complexity estimator is also developed to reduce the implementation complexity. The CFO estimation range can span the whole OFDM signal bandwidth by nonuniformly distributing the embedded pilot tones in the frequency domain. Computer simulation results show that the performance of the proposed estimator can meet the requirement of typical OFDM communication systems.en_HK
dc.format.extent284623 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.ispartofJoint Conference on the 4th International Conference on Information, Communications and Signal Processing and the 4th Pacific Rim Conference on Multimedia Proceedings-
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.titlePilot-based carrier frequency offset estimation in OFDM systemsen_HK
dc.typeConference_Paperen_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/ICICS.2003.1292582en_HK
dc.identifier.hkuros90271-

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