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Conference Paper: Equalizing multihop OFDM relay channel under unknown channel orders and doppler frequencies

TitleEqualizing multihop OFDM relay channel under unknown channel orders and doppler frequencies
Authors
Issue Date2014
PublisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000104
Citation
The 2014 IEEE International Conference on Communications (IEEE ICC 2014), Sydney, Australia, 10-14 June 2014. In IEEE International Conference on Communications, 2014, p. 4512-4517 How to Cite?
AbstractIn this paper, equalization of multihop relaying orthogonal frequency division multiplexing (OFDM) signal is investigated under time-varying channel with unknown noise powers, channel orders and Doppler frequencies. An iterative algorithm is developed under variational expectation maximization (EM) framework. The proposed algorithm iteratively estimates the channel, learns the channel and noise statistical information, and recovers the unknown data, using only limited number of pilot subcarrier in one OFDM symbol. Simulation results show that, without any statistical information, the performance of the proposed algorithm is very close to that of the optimal channel estimation and data detection algorithm, which requires specific information on system structure, channel tap positions, channel lengths, Doppler shifts as well as noise powers. © IEEE.
DescriptionIEEE ICC 2014 - Signal Processing for Communications Symposium
Persistent Identifierhttp://hdl.handle.net/10722/199395
ISBN
ISSN

 

DC FieldValueLanguage
dc.contributor.authorZhou, Jen_US
dc.contributor.authorMin, Ren_US
dc.contributor.authorQin, Jen_US
dc.contributor.authorWu, YCen_US
dc.date.accessioned2014-07-22T01:15:41Z-
dc.date.available2014-07-22T01:15:41Z-
dc.date.issued2014en_US
dc.identifier.citationThe 2014 IEEE International Conference on Communications (IEEE ICC 2014), Sydney, Australia, 10-14 June 2014. In IEEE International Conference on Communications, 2014, p. 4512-4517en_US
dc.identifier.isbn978-1-4799-2003-7-
dc.identifier.issn1550-3607-
dc.identifier.urihttp://hdl.handle.net/10722/199395-
dc.descriptionIEEE ICC 2014 - Signal Processing for Communications Symposium-
dc.description.abstractIn this paper, equalization of multihop relaying orthogonal frequency division multiplexing (OFDM) signal is investigated under time-varying channel with unknown noise powers, channel orders and Doppler frequencies. An iterative algorithm is developed under variational expectation maximization (EM) framework. The proposed algorithm iteratively estimates the channel, learns the channel and noise statistical information, and recovers the unknown data, using only limited number of pilot subcarrier in one OFDM symbol. Simulation results show that, without any statistical information, the performance of the proposed algorithm is very close to that of the optimal channel estimation and data detection algorithm, which requires specific information on system structure, channel tap positions, channel lengths, Doppler shifts as well as noise powers. © IEEE.en_US
dc.languageengen_US
dc.publisherIEEE. The Journal's web site is located at http://www.ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000104-
dc.relation.ispartofIEEE International Conference on Communicationsen_US
dc.rightsIEEE International Conference on Communications. Copyright © IEEE.-
dc.rights©2014 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleEqualizing multihop OFDM relay channel under unknown channel orders and doppler frequenciesen_US
dc.typeConference_Paperen_US
dc.identifier.emailZhou, J: jrzhou@eee.hku.hken_US
dc.identifier.emailWu, YC: ycwu@hkucc.hku.hken_US
dc.identifier.authorityWu, YC=rp00195en_US
dc.description.naturepublished_or_final_version-
dc.identifier.hkuros231480en_US
dc.identifier.spage4512-
dc.identifier.epage4517-
dc.publisher.placeUnited States-
dc.customcontrol.immutablesml 140905-

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