A rateless UEP convolutional code for robust SVC/MGS wireless broadcasting

Chung-Hsuan Wang, John K. Zao*, Hsing Min Chen, Pei Lun Diao, Chih Ming Chiu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

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 tradeoffs 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 necessary 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 convolutional 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. conventional Reed-Solomon codes. The comparison makes clear the advantages and the disadvantages of employing rate less codes in protecting wireless video broad-casting.

Original languageEnglish
Title of host publicationProceedings - 2011 IEEE InternationalSymposium on Multimedia, ISM 2011
Pages279-284
Number of pages6
DOIs
StatePublished - 1 Dec 2011
Event13th IEEE International Symposium on Multimedia, ISM 2011 - Dana Point, CA, United States
Duration: 5 Dec 20117 Dec 2011

Publication series

NameProceedings - 2011 IEEE InternationalSymposium on Multimedia, ISM 2011

Conference

Conference13th IEEE International Symposium on Multimedia, ISM 2011
CountryUnited States
CityDana Point, CA
Period5/12/117/12/11

Keywords

  • convolutional cod
  • rateless channel code
  • scalable video code
  • unequal erasure protection
  • wireless broadcasting

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