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Mobile TV using scalable video coding and layer-aware forward error correction

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3 Author(s)
Hellge, C. ; Fraunhofer Inst. for Telecommun., Berlin ; Schierl, T. ; Wiegand, T.

A new approach to error protection for scalable media is presented for mobile TV applications. Mobile TV is typically characterized by a number of receiver capabilities and connection qualities. A broadcast service should preferably work for multiple receiver capabilities without the need for downscaling or transcoding at the battery-powered mobile devices. Moreover, a media quality that gracefully degrades with reception quality instead of a complete signal loss is also a desirable feature. The scalable video coding (SVC) extension of H.264/AVC offers an efficient way to support the aforementioned features. In mobile broadcast channels forward error correction (FEC) is used to overcome packet losses. This work proposes a layer-aware forward error correction (L-FEC) approach in combination with SVC. L-FEC increases robustness of the more important layers by generating protection across layers. L-FEC is integrated as an extension of an Raptor FEC implementation. It is shown by experimental results that L-FEC outperforms traditional FEC and UEP protection schemes.

Published in:

Multimedia and Expo, 2008 IEEE International Conference on

Date of Conference:

June 23 2008-April 26 2008