A framework for robust and scalable audio streaming
Proceedings of the 12th annual ACM international conference on Multimedia
WOWMOM '06 Proceedings of the 2006 International Symposium on on World of Wireless, Mobile and Multimedia Networks
Cross-layer QoS support for multimedia delivery over wireless internet
EURASIP Journal on Applied Signal Processing
IEEE Transactions on Multimedia
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Hierarchical Optimization of Cascading Error Protection Scheme for H.264 Scalable Video Streaming
Journal of Signal Processing Systems
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Streaming high-fidelity audio over wireless Internet protocol (IP) networks is a challenging task because the networks present not only packet losses, but also residual bit errors. These losses and errors have severe adverse effect on the compressed audio bitstream. To solve this problem, this paper introduces error resilience in conjunction with error protection for scalable audio streaming over wireless networks. Specifically, error resilience is achieved by performing bitstream data partitioning and reversible variable length coding in the audio coder. Error protection is provided by layered product channel code to simultaneously handle packet losses and residual bit errors. Both the row and column codes of the product code provide unequal error protection for different layers of the audio bitstream by considering the characteristics of the scalable audio. Rate-distortion optimization is performed to determine the best source-channel coding tradeoff that minimizes the average expected end-to-end distortion. Simulation results demonstrate the effectiveness of our proposed approach.