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ICASSP
2010
IEEE

Robust critical data recovery for MPEG-4 AAC encoded bitstreams

11 years 1 months ago
Robust critical data recovery for MPEG-4 AAC encoded bitstreams
This paper presents a bandwidth-efficient method for improved decoding of critical data generated by the MPEG-4 AAC audio coder when encoded bitstreams are transmitted over noisy channels. The critical data of each encoded frame is estimated using the redundancy due to the correlation between successive frame headers and using an optional CRC as an error-correcting code. Simulation results for an AWGN channel show a substantial link budget improvement (more than 5 dB) compared to a classical hard-decoding method. Once critical data are efficiently estimated, the work of previously proposed joint source-channel decoding techniques to recover the remaining parts of the MPEG4 AAC frames is significantly facilitated.
Ruijing Hu, Xucen Huang, Michel Kieffer, Olivier D
Added 06 Dec 2010
Updated 06 Dec 2010
Type Conference
Year 2010
Where ICASSP
Authors Ruijing Hu, Xucen Huang, Michel Kieffer, Olivier Derrien, Pierre Duhamel
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