Conference Paper: Joint CFO and channel estimation for ZP-OFDM modulated two-way relay networks

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TitleJoint CFO and channel estimation for ZP-OFDM modulated two-way relay networks
AuthorsWang, G3
Gao, F1
Wu, YC2
Tellambura, C3
KeywordsCarrier frequency offset
Channel estimation
OFDM
Performance analysis
Two-way relay network
Issue Date2010
PublisherIEEE Communications Society.
CitationThe IEEE Conference on Wireless Communications and Networking (WCNC 2010), Sydney, NSW., 18-21 April 2010. In Proceedings of WCNC, 2010, p. 1-6 [How to Cite?]
DOI: http://dx.doi.org/10.1109/WCNC.2010.5506619
AbstractIn this paper, we study the problem of joint carrier frequency offset (CFO) and channel estimation for two-way relay network (TWRN). We consider the frequency selective fading channels and adopt the zero padding (ZP) based orthogonal frequency division multiplexing (OFDM) as the modulation of the transmission. Due to the mixture of the first and the second transmission phases, the joint estimation problem becomes much challenging than that in the traditional point-to-point communication systems. By introducing some redundancy, we modify the structure of ZP-OFDM to cope with non-zero frequency synchronization errors. We then propose a nulling-based least square (NLS) method for joint CFO and channel estimation. A detailed performance analysis of NLS has been conducted, where we prove that the unbiasedness of NLS and derive the closed-form estimation mean-square-error (MSE) at high signal-to-noise ratio (SNR). Finally, simulations are provided to corroborate the proposed studies. ©2010 IEEE.
ISSN1525-3511
DOIhttp://dx.doi.org/10.1109/WCNC.2010.5506619
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorWang, G
dc.contributor.authorGao, F
dc.contributor.authorWu, YC
dc.contributor.authorTellambura, C
dc.date.accessioned2010-10-31T12:09:08Z
dc.date.available2010-10-31T12:09:08Z
dc.date.issued2010
dc.description.abstractIn this paper, we study the problem of joint carrier frequency offset (CFO) and channel estimation for two-way relay network (TWRN). We consider the frequency selective fading channels and adopt the zero padding (ZP) based orthogonal frequency division multiplexing (OFDM) as the modulation of the transmission. Due to the mixture of the first and the second transmission phases, the joint estimation problem becomes much challenging than that in the traditional point-to-point communication systems. By introducing some redundancy, we modify the structure of ZP-OFDM to cope with non-zero frequency synchronization errors. We then propose a nulling-based least square (NLS) method for joint CFO and channel estimation. A detailed performance analysis of NLS has been conducted, where we prove that the unbiasedness of NLS and derive the closed-form estimation mean-square-error (MSE) at high signal-to-noise ratio (SNR). Finally, simulations are provided to corroborate the proposed studies. ©2010 IEEE.
dc.description.naturepublished_or_final_version
dc.description.otherThe IEEE Conference on Wireless Communications and Networking (WCNC 2010), Sydney, NSW., 18-21 April 2010. In Proceedings of WCNC, 2010, p. 1-6
dc.identifier.citationThe IEEE Conference on Wireless Communications and Networking (WCNC 2010), Sydney, NSW., 18-21 April 2010. In Proceedings of WCNC, 2010, p. 1-6 [How to Cite?]
DOI: http://dx.doi.org/10.1109/WCNC.2010.5506619
dc.identifier.doihttp://dx.doi.org/10.1109/WCNC.2010.5506619
dc.identifier.epage6
dc.identifier.hkuros175316
dc.identifier.issn1525-3511
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-77955033523
dc.identifier.spage1
dc.identifier.urihttp://hdl.handle.net/10722/126088
dc.languageeng
dc.publisherIEEE Communications Society.
dc.publisher.placeUnited States
dc.relation.ispartofProceedings of the IEEE Conference on Wireless Communications and Networking, WCNC 2010
dc.relation.referencesReferences in Scopus
dc.rightsIEEE Wireless Communications and Networking Conference. Proceedings. Copyright © IEEE Communications Society.
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License
dc.rights©2010 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.
dc.subjectCarrier frequency offset
dc.subjectChannel estimation
dc.subjectOFDM
dc.subjectPerformance analysis
dc.subjectTwo-way relay network
dc.titleJoint CFO and channel estimation for ZP-OFDM modulated two-way relay networks
dc.typeConference_Paper
Author Affiliations
  1. Jacobs University Bremen
  2. The University of Hong Kong
  3. University of Alberta