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31 January 2011 Real-time priority-aware transfer of SVC encoded video over MIMO communications system
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Proceedings Volume 7882, Visual Information Processing and Communication II; 788205 (2011)
Event: IS&T/SPIE Electronic Imaging, 2011, San Francisco Airport, California, United States
A novel cross-layer method is proposed for real-time transmission of standard compliant scalable video over a powerlimited multiple-input multiple-output (MIMO) system with channel state feedback. In the MIMO system, adaptive power allocation and antenna selection are utilized for creation of unequal bit error rate (BER) sub-channels. BER across all the sub-channels can be improved by reducing the channel throughput. In the proposed method, the scalable video is first divided into multiple video sub-streams of unequal importance by content-based partitioning and sorting of video layers. A novel technique is utilized to select the sub-stream data to be sent over the available MIMO sub-channels as to match the importance of the video data to both the channel BER and data transmission delay. Video packets that are delayed excessively are discarded at the transmitter. A trade-off exists between the losses in video peak signal-to-noise ratio (PSNR) resulting from discarded video packets at the transmitter, and gains in video PSNR due to lower channel BER. Simulation results show that the proposed method results in significantly improved performance compared with video transmission over constant BER channels with throughput equal to the video bit rate.
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Daniela Radakovic, Yingwei Yao, and Rashid Ansari "Real-time priority-aware transfer of SVC encoded video over MIMO communications system", Proc. SPIE 7882, Visual Information Processing and Communication II, 788205 (31 January 2011);

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