Structured network coding and cooperative local peer-to-peer repair for MBMS video streaming

—By providing coding ability at intermediate nodes, network coding has been shown to improve throughput in wireless broadcast/multicast networks. Considering a scenario where wireless ad-hoc peers cooperatively relay packets to each other to recover packets lost during MBMS broadcast, we show that by first imposing coding structures globally and then selecting the appropriate types within the structures locally, network coding can be optimized for video streaming in a rate-distortion manner. Experimental results show that our proposed scheme can improve video quality noticeably, by up to 19.71dB over un-repaired video stream and by up to 8.34dB over video stream using traditional unstructured network coding.

• Type: Conference
• Year: 2008
• Where: MMSP
• Authors: Xin Liu, Gene Cheung, Chen-Nee Chuah
• Keywords: MMSP 2008, Multimedia, Network Coding, Unstructured Network Coding, Video Stream