NDLI: A Rateless UEP Convolutional Code for Robust SVC/MGS Wireless Broadcasting

Content Provider	IEEE Xplore Digital Library
Author	Chung-Hsuan Wang Zao, J.K. Hsing-Min Chen Pei-Lun Diao Chih-Ming Chiu
Copyright Year	2011
Abstract	Wireless broadcasting of scalable video coded medium grain scalable (SVC/MGS) bit streams requires unequal erasure protection (UEP) at the transport layer in order to ensure graceful degradation of playback video quality over a wide range of frame error rates. Modern wireless broadcasting systems even employ rate less fountain codes to aid the receivers in making inevitable trade¬offs among picture quality, channel throughput and playback latency. Designing a rate less UEP channel code fits for such an application posts distinct engineering challenges as the neces¬sary protection for SVC base and enhancement layers differ by orders of magnitude while their intradependent groups of pictures fluctuate notably in their sizes. In this paper, we present the design and implementation of a rate less UEP con¬volutional code that meets these demanding requirements. Use of this UEP channel code along with rate-distortion based network application layer unit extraction offer sufficient protection to SVC bit streams under different lossy conditions without the need to re-code the bit stream. We also investigated the differences in playback performance of SVC bit streams that were protected by rate less codes vs. con¬ventional Reed-Solomon codes. The comparison makes clear the advantages and the disadvantages of employing rate less codes in protecting wireless video broad-casting.
Starting Page	279
Ending Page	284
File Size	1173173
Page Count	6
File Format	PDF
ISBN	9781457720154
DOI	10.1109/ISM.2011.51
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-12-05
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Static VAr compensators Error correction codes Convolutional codes Decoding Rate-distortion Wireless communication Broadcasting convolutional cod scalable video code wireless broadcasting unequal erasure protection rateless channel code
Content Type	Text
Resource Type	Article

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