APPLICATION-LAYER ERROR RESILIENCE FOR WIRELESS IP-BASED VIDEO BROADCASTING

in International Symposium (oral presentation paper), 國際研討會(全文口頭發表)
標題APPLICATION-LAYER ERROR RESILIENCE FOR WIRELESS IP-BASED VIDEO BROADCASTING
出版類型國際研討會(全文口頭發表)
出版年度2011
AuthorsSheau-Ru Tong, 童曉儒, Yuan-Tse Yu 余遠澤, & Che-Min Chen 陳哲民
會議名稱
出版日期Jul 11 2011 12:0
會議地點巴塞隆納
其他編號0000
中文摘要

Wireless IP-based video broadcast suffers from heavy packet losses caused by multipath fading and interference variations in the wireless channels. This paper addresses this issue by proposing an application-layer error-resilience scheme, called the replicate multiple descriptor coding scheme (RMD). In principle, RMD extends the conventional multiple descriptor transmission strategy with two new features, the selective-frame-based replication and a time-shifted descriptor transmission. We show that with these two features, we are able to exploit the time diversity in a time-sharing channel to mitigate the damage impact and provide more efficient protection for the video. The simulation results confirm that when the packet loss rate is heavy (e.g., 15%-35%), RMD outperforms other schemes in terms of PSNR improved, while only requiring moderate data overheads.

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