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http://dx.doi.org/10.5909/JBE.2008.13.6.951

ROI-based Video Transmission using Cooperative Diversity over Wireless Ad-hoc Networks  

Jang, Uk (Department of Electrical Engineering, Yonsei University)
Lee, Sang-Hoon (R&D Center Communication/Platform CFCS Group Samsung Thales Co., LTD.)
Bae, Kyung-Hoon (Department of Electrical Engineering, Yonsei University)
Publication Information
Journal of Broadcast Engineering / v.13, no.6, 2008 , pp. 951-961 More about this Journal
Abstract
Cooperative diversity is a cooperative technique which exploits user diversity by decoding the combined signal of the relayed signal and the direct signal in wireless multi-hop networks. Using the cooperation, the performance of the network system can be improved because cooperative diversity which is very strong against the fading channels can be achieved. In this paper, we propose the technique that provides the enhanced visual quality of the reconstructed video using the cooperative diversity with the FMO which is the error resilience tool of H.264/AVC standardization over wireless networks. The eye-tracker can detect the gaze point of user and transmit the gaze information to the nodes. After receiving the gaze information of user, each node performs ROI encoding according to the received gaze information. After encoding, video sources are divided into ROI and Non-ROI. Through the simulation results, the better visual quality of the reconstructed video is achieved when ROI and Non-ROI are transmitted through different channels.
Keywords
ROI; Cooperative Diversity; Wireless Video; Multimedia; FMO;
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