NDLI: Network coding based SVC multicast over broadband wireless networks

Content Provider	IEEE Xplore Digital Library
Author	Hao Zhou Yusheng Ji Yu Gu Baohua Zhao
Copyright Year	2012
Description	Author affiliation: School of Computer Science, University of Science and Technology of China, Hefei, Anhui, 230027, China (Hao Zhou; Baohua Zhao) \|\| National Institute of Informatics, Tokyo, 101-8430, Japan (Yusheng Ji; Yu Gu)
Abstract	Video multicast over wireless networks has its own challenges when facing the heterogeneity of networks and end-user capabilities, along with packet losses. Scalable video coding using different modulation and coding schemes (MCSs) applied to different video layers can provide different video qualities to different users according to their channel conditions. A layered hybrid NC/ARQ scheme is proposed in this paper to handle packet losses together with a structure network coding (SNC) technique to encode the SVC stream. It is important to choose an appropriate MCS for each layer, decide how many SNC packets in one layer should be transmitted, and determine the resources allocated to multiple video sessions to apply scalable video coding to wireless multicast streaming. We prove that such a resource allocation problem is NP-hard and propose an optimal algorithm with a pseudo-polynomial run time under a reasonable assumption. We also discuss the phenomenon of unexpected packet losses caused degradation of the layered hybrid NC/ARQ schemes in a high packet loss ratio environment, and propose a solution for overcoming such a problem. Our algorithm can attain the optimal transmission configuration for maximizing the expected utility for all receivers. The results from simulations revealed that our algorithm offers significant improvements to the video quality over an optimal algorithm without needing feedback from the receivers and an algorithm using a layered hybrid FEC/ARQ scheme, and it has the outstanding ability to combat unexpected packet losses.
Starting Page	428
Ending Page	435
File Size	1203027
Page Count	8
File Format	PDF
ISBN	9781467315654
ISSN	07421303
e-ISBN	9781467315647
DOI	10.1109/LCN.2012.6423657
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-22
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Packet loss Streaming media Automatic repeat request Static VAr compensators Network coding network coding scalable video coding(SVC) modulation and coding scheme(MCS)
Content Type	Text
Resource Type	Article

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