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- W1624795212 abstract "Heterogeneous wireless networks present several challenges for real-time video applications. Traditional video codecs are not particularly robust and perform poorly when faced with packet losses from congestion and bit errors within the channel. A combination of deterministic traffic smoothing and layered video coding techniques improves error resilience. Smoothing over single frame intervals improves statistical multiplexing gains. To mitigate a portion of the delay introduced by smoothing, we propose a predictive smoother using the RLS algorithm that reduces the delay due to encoding. Layered video coding transmits video in scalable layers of increasing quality. We present a simple hybrid wavelet/DCT layered coder along with an associated optimized layered video traffic model. The traffic model employs a simplified multistate Markov chain representing a nonuniformly quantized pseudo-histogram of observed bit-rates for each layer. The model captures the effect of deterministic smoothing and aids in evaluating scheduling algorithms as well as providing a simple call acceptance scheme." @default.
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- W1624795212 date "2003-01-20" @default.
- W1624795212 modified "2023-09-26" @default.
- W1624795212 title "Modeling of layered video for low-bit-rate video conferencing applications" @default.
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- W1624795212 doi "https://doi.org/10.1109/iscas.1999.779993" @default.
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