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Conference Paper: UEP for video transmission in space-time coded OFDM systems

TitleUEP for video transmission in space-time coded OFDM systems
Authors
Issue Date2004
PublisherI E E E, Computer Society. The Journal's web site is located at http://www.ieee-infocom.org/
Citation
Proceedings - Ieee Infocom, 2004, v. 2, p. 1200-1210 How to Cite?
AbstractIn this paper, we provide a sub-channel partitioning based unequal error protection (UEP) scheme for a space-time block coded orthogonal frequency division multiplexing (STBC-OFDM) system. In such a scheme, video data is partitioned into high-priority (HP) and low-priority (LP) layers according to the importance of the data. At the receiver side, OFDM sub-channels are partitioned into high-quality (HQ) and low-quality (LQ) groups according to the estimated channel qualities. Based on the feedback of sub-channel partitioning results, the transmitter assigns HP and LP video data to the corresponding HQ and LQ sub-channels. Through theoretical analysis, we show there is indeed a significant BER difference between the HQ and LQ sub-channels, which can be exploited by UEP. Based on the analysis, we provide a criterion for determining the appropriate transmission power. Through computer simulations, we show that the proposed scheme offers significant performance gain compared to conventional methods. We also demonstrate that the scheme is the least sensitive to channel estimation errors among all compared schemes, and is hardly influenced by the Doppler spread. The feedback overhead can also be reduced with almost no performance penalty by bundling several neighboring sub-channels together and assigning them to the same group.
Persistent Identifierhttp://hdl.handle.net/10722/158760
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorYang, GHen_US
dc.contributor.authorShen, Den_US
dc.contributor.authorLi, VOKen_US
dc.date.accessioned2012-08-08T09:01:12Z-
dc.date.available2012-08-08T09:01:12Z-
dc.date.issued2004en_US
dc.identifier.citationProceedings - Ieee Infocom, 2004, v. 2, p. 1200-1210en_US
dc.identifier.issn0743-166Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/158760-
dc.description.abstractIn this paper, we provide a sub-channel partitioning based unequal error protection (UEP) scheme for a space-time block coded orthogonal frequency division multiplexing (STBC-OFDM) system. In such a scheme, video data is partitioned into high-priority (HP) and low-priority (LP) layers according to the importance of the data. At the receiver side, OFDM sub-channels are partitioned into high-quality (HQ) and low-quality (LQ) groups according to the estimated channel qualities. Based on the feedback of sub-channel partitioning results, the transmitter assigns HP and LP video data to the corresponding HQ and LQ sub-channels. Through theoretical analysis, we show there is indeed a significant BER difference between the HQ and LQ sub-channels, which can be exploited by UEP. Based on the analysis, we provide a criterion for determining the appropriate transmission power. Through computer simulations, we show that the proposed scheme offers significant performance gain compared to conventional methods. We also demonstrate that the scheme is the least sensitive to channel estimation errors among all compared schemes, and is hardly influenced by the Doppler spread. The feedback overhead can also be reduced with almost no performance penalty by bundling several neighboring sub-channels together and assigning them to the same group.en_US
dc.languageengen_US
dc.publisherI E E E, Computer Society. The Journal's web site is located at http://www.ieee-infocom.org/en_US
dc.relation.ispartofProceedings - IEEE INFOCOMen_US
dc.titleUEP for video transmission in space-time coded OFDM systemsen_US
dc.typeConference_Paperen_US
dc.identifier.emailYang, GH:ghyang@eee.hku.hken_US
dc.identifier.emailLi, VOK:vli@eee.hku.hken_US
dc.identifier.authorityYang, GH=rp00200en_US
dc.identifier.authorityLi, VOK=rp00150en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1109/INFCOM.2004.1357006en_US
dc.identifier.scopuseid_2-s2.0-8344220459en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-8344220459&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume2en_US
dc.identifier.spage1200en_US
dc.identifier.epage1210en_US
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridYang, GH=35119861400en_US
dc.identifier.scopusauthoridShen, D=7401738166en_US
dc.identifier.scopusauthoridLi, VOK=7202621685en_US

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