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

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TitleJoint CFO and channel estimation for CP-OFDM modulated two-way relay networks
AuthorsWang, G3
Gao, F1
Wu, YC2
Tellambura, C3
KeywordsCarrier frequency offsets
CP-OFDM
Cyclic prefix
Estimation problem
Frequency-selective
Issue Date2010
PublisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000104
CitationThe IEEE International Conference on Communications (ICC 2010), Cape Town, South Africa, 23-27 May 2010. In Proceedings of the IEEE International Conference on Communications, 2010, p. 1-5 [How to Cite?]
DOI: http://dx.doi.org/10.1109/ICC.2010.5501833
AbstractIn this paper, we study the problem of joint carrier frequency offset (CFO) and channel estimation for amplify-andforward (AF) two-way relay network (TWRN) that comprises two source terminals and one relay node. Both the system design and the estimation problem become more challenging when CFO is non-zero in a frequency-selective environment, as compared to the conventional point-to-point communication systems. By introducing some redundancy, we propose a cyclic prefix (CP) based OFDM modulation for TWRN that is capable of maintaining the advantage of using multi-carrier transmission and at the same time facilitates the system initialization, e.g., synchronization and channel estimation. We then apply a least square (LS) approach to solve the estimation problem. The approximated Cramér-Rao Bound (CRB) has been derived as the performance benchmark of the proposed estimator. Finally, simulations are provided to corroborate the theoretical studies. ©2010 IEEE.
ISSN0536-1486
2011 SCImago Journal Rankings: 0.033
DOIhttp://dx.doi.org/10.1109/ICC.2010.5501833
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorWang, G
dc.contributor.authorGao, F
dc.contributor.authorWu, YC
dc.contributor.authorTellambura, C
dc.date.accessioned2010-12-23T08:40:45Z
dc.date.available2010-12-23T08:40:45Z
dc.date.issued2010
dc.description.abstractIn this paper, we study the problem of joint carrier frequency offset (CFO) and channel estimation for amplify-andforward (AF) two-way relay network (TWRN) that comprises two source terminals and one relay node. Both the system design and the estimation problem become more challenging when CFO is non-zero in a frequency-selective environment, as compared to the conventional point-to-point communication systems. By introducing some redundancy, we propose a cyclic prefix (CP) based OFDM modulation for TWRN that is capable of maintaining the advantage of using multi-carrier transmission and at the same time facilitates the system initialization, e.g., synchronization and channel estimation. We then apply a least square (LS) approach to solve the estimation problem. The approximated Cramér-Rao Bound (CRB) has been derived as the performance benchmark of the proposed estimator. Finally, simulations are provided to corroborate the theoretical studies. ©2010 IEEE.
dc.description.naturepublished_or_final_version
dc.description.otherThe IEEE International Conference on Communications (ICC 2010), Cape Town, South Africa, 23-27 May 2010. In Proceedings of the IEEE International Conference on Communications, 2010, p. 1-5
dc.identifier.citationThe IEEE International Conference on Communications (ICC 2010), Cape Town, South Africa, 23-27 May 2010. In Proceedings of the IEEE International Conference on Communications, 2010, p. 1-5 [How to Cite?]
DOI: http://dx.doi.org/10.1109/ICC.2010.5501833
dc.identifier.doihttp://dx.doi.org/10.1109/ICC.2010.5501833
dc.identifier.epage5
dc.identifier.hkuros177100
dc.identifier.issn0536-1486
2011 SCImago Journal Rankings: 0.033
dc.identifier.openurl
dc.identifier.scopuseid_2-s2.0-77955393586
dc.identifier.spage1
dc.identifier.urihttp://hdl.handle.net/10722/129658
dc.languageeng
dc.publisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000104
dc.relation.ispartofProceedings of the IEEE International Conference on Communications, ICC 2010
dc.relation.referencesReferences in Scopus
dc.rightsIEEE International Conference on Communications. Copyright © IEEE.
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 offsets
dc.subjectCP-OFDM
dc.subjectCyclic prefix
dc.subjectEstimation problem
dc.subjectFrequency-selective
dc.titleJoint CFO and channel estimation for CP-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