Network-embedded FEC for optimum throughput of multicast packet video

Wu, Mingquan; Karande, Shirish; Radha, Hayder

doi:10.1016/j.image.2005.05.002

Cited by 29 publications

(30 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reed-Solomon codes or LT codes have been implemented in network-embedded FEC nodes [18] and in network peers [17], respectively, in order to enhance the robustness to transmission errors. In both cases, the packets are decoded and re-encoded in the network nodes, before transmission towards the streaming client.…”

Section: Related Workmentioning

confidence: 99%

Raptor network video coding

Thomos

Frossard

2007

Proceedings of the International Workshop on Workshop on Mobile Video

View full text Add to dashboard Cite

In this paper, we consider the problem of streaming video information on lossy packet networks with path and source diversity, such as wireless mesh networks or more generally overlay architectures. We propose to distribute the video information between several streaming servers and to implement network coding in the forwarding peers in order to increase the quality of the video decoded by the streaming client. A network coding algorithm based on Raptor codes permits to combine video packets in the network nodes and to increase the symbol diversity in the network. Coupled with the path diversity in the overlay network, this solution is shown to offer a significant gain in video quality compared to baseline streaming solutions when loss rate becomes important or the network diversity is reduced.

show abstract

Section: Related Workmentioning

confidence: 99%

Raptor network video coding

Thomos

Frossard

2007

Proceedings of the International Workshop on Workshop on Mobile Video

View full text Add to dashboard Cite

show abstract

“…Furthermore, adopting FEC transcoding in each intermediate transmission node can recover certain amount of corrupted packets transmitted through the preceding paths, thus preventing from further quality degradation accumulatively in the following transmission paths. With fixed allocated bandwidth and prior knowledge of the channel condition for each path, systems can be formulated as to maximize the overall throughput by determining which intermediate nodes should perform FEC transcoding for the unicast [29] and multicast scenarios [30]. In our proposed framework, the bandwidth of uplink and downlink is dynamically allocated according to the needs.…”

Section: Prior Workmentioning

confidence: 99%

Joint Uplink and Downlink Optimization for Real-Time Multiuser Video Streaming Over WLANs

Han

et al. 2007

IEEE J. Sel. Top. Signal Process.

View full text Add to dashboard Cite

Abstract-In this paper, a network-aware and source-aware video streaming system is proposed to support interactive multiuser communications within single-cell and multicell IEEE 802.11 networks. Unlike the traditional streaming video services, the strict delay constraints of an interactive video streaming system pose more challenges. These challenges include the heterogeneity of uplink and downlink channel conditions experienced by different users, the multiuser resource allocation of limited radio resources, the incorporation of the cross-layer design, and the diversity of content complexities exhibited by different video sequences. With the awareness of video content and network resources, the proposed system integrates cross-layer error protection mechanism and performs dynamic resource allocation across multiple users. We formulate the proposed system as to minimize the maximal end-to-end expected distortion received by all users, subject to maximal transmission power and delay constraints. To reduce the high dimensionality of the search space, fast multiuser algorithms are proposed to find the near-optimal solutions. Compared to the strategy without dynamically and jointly allocating bandwidth resource for uplinks and downlinks, the proposed framework outperforms by 2.18 7.95 dB in terms of the average received PSNR of all users and by 3.82 11.50 dB in terms of the lowest received PSNR among all users. Furthermore, the proposed scheme can provide more uniform video quality for all users and lower quality fluctuation for each received video sequence.Index Terms-Cross-layer design, joint uplink and downlink optimization, multiuser video communication, network-aware, wireless local area networks.

show abstract

“…A particular case of NCC is Network Embedded FEC (NEF) [1]- [2], which has been shown to exhibit significant improvements in the performance of video streaming applications over multicast peer-to-peer (p2p) trees. The placement of NCC/NEF codecs and its utility in improving the throughput performance is in general a function of the underlying p2p graph topology.…”

Section: Introductionmentioning

confidence: 99%

“…Within the framework of Network Embedded FEC (NEF) [1]- [2], intermediate nodes in the network are enabled with FEC decoding and encoding functionalities, to facilitate efficient loss recovery within the network so as to avoid the accumulation of the losses. A simplistic and straightforward approach of embedding a NEF codec at every single intermediate node would naturally improve the end-to-end throughput, but that would also increase the processing overhead and the end-to-end latency due to processing/service delays.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Graph Properties of Peer-to-Peer Topologies on Video Streaming with Network Channel Coding

Karande

Radha

2006

2006 IEEE International Conference on Multimedia and Expo

Self Cite

View full text Add to dashboard Cite

Network Channel Coding (NCC) distributes channel coding functions over network nodes participating in common or diverse communication sessions. A particular case of NCC is Network Embedded FEC (NEF) [1]- [2], which has been shown to exhibit significant improvements in the performance of video streaming applications over multicast peer-to-peer (p2p) trees. The placement of NCC/NEF codecs and its utility in improving the throughput performance is in general a function of the underlying p2p graph topology. In this paper we consider two major forms of p2p topologies: (1) perfectly structured k-ary tree topologies that can be built from (virtually) ideal p2p graphs [3] and (2) unstructured random tree topologies where new nodes randomly join as children to any of the existing peers. The two topologies represent an optimal low diameter structured p2p topology and a trivial randomly evolving sub-optimal topology, respectively. In this paper, we show the impact of key graph parameters, such as the maximum node-degree k and minimum tree-height D, on the performance of NCC in terms of NEF throughput as well as video quality for both structured and unstructured topologies. The utility of NCC/NEF for low-degree and/or less structured p2p topologies is especially highlighted by demonstrating that, embedding of additional codecs can render the performance of less structured topologies or higher diameter topologies to be almost as good as that of the very well structured low diameter topologies. We also investigate the impact of the graph properties on the placement of the NEF codecs.

show abstract

Network-embedded FEC for optimum throughput of multicast packet video

Cited by 29 publications

References 15 publications

Raptor network video coding

Raptor network video coding

Joint Uplink and Downlink Optimization for Real-Time Multiuser Video Streaming Over WLANs

Influence of Graph Properties of Peer-to-Peer Topologies on Video Streaming with Network Channel Coding

Contact Info

Product

Resources

About