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Opportunistic Video Communication over Cooperative Decode-Forward Networks |
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| Authors: | XIAOHongjiang DAIQionghai JIXiangyangTsinghuaNationalLaboratoryforInformationScience Technology |
| Institution: | XIAO+Hongjiang,DAI+Qionghai,JI+Xiangyang+Tsinghua+National+Laboratory+for+Information+Science+,+Technology,Department+of+Automation,Tsinghua+University,Beijing+100084,China |
| Abstract: | An opportunistic automatic repeat request (ARQ) scheme was developed to support high-quality video transmission over cooperative decode-forward networks. The opportunistic ARQ is implemented in the form of distributed space-time block codes (STBCs) and the desired STBC for a certain channel state is de-termined by the diversity-multiplexing tradeoff principle. With good channel states, the source and relay may jointly retransmit the lost video packets using high-rate low-diversity codes while with bad chann... |
| Keywords: | cooperative networks opportunistic communication diversity-multiplexing tradeoff automatic repeat request scalable video |
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