Network embedded FEC (NEF) for video multicast in presence of packet loss correlation

Network Embedded Forward Error Correction (NEF) framework is a paradigm shift from a conventional approach of providing Forward Error Correction (FEC) only on an end-to-end basis. Previous work on NEF has shown promise in greatly improving the decodable probability, message throughput and video quality available to the end receiver. However the utility of NEF for video applications in presence of packet loss correlation has not been evaluated as yet. In practice, packet losses are often correlated and occur in bursts. The distortion in video can be sensitive to the bursty nature of the losses. Thus in this paper we analyze the performance of NEF within random multicast distribution trees that exhibit losses-with-memory over their branches. We utilized the Gilbert model for packet losses over each link. We quantify the performance improvement of NEF over conventional end-to?end FEC in terms of improvement in video quality in presence of packet loss correlation. Embedding NEF codecs can...

• Type: Conference
• Year: 2005
• Where: ICIP
• Authors: Shirish S. Karande, Mingquan Wu, Hayder Radha
• Keywords: ICIP 2005, Image Processing, NEF Codecs, Packet Loss Burstiness, Packet Loss Correlation, Packet Losses, Video Quality