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首页> 外文期刊>Signal Processing. Image Communication: A Publication of the the European Association for Signal Processing >Models and analysis of streaming video transmission over wireless fading channels
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Models and analysis of streaming video transmission over wireless fading channels

机译：无线衰落信道上流视频传输的模型和分析

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摘要

In this paper, we first develop a simple but nevertheless accurate and fully analytical model for the sequence-level distortion-rate (D-R) performance of predictive video source encoding. This model focuses on the input-output behavior of the source encoder and requires very limited amount of empirical data to set up its working parameters, namely three pairs of rate and distortion. Then, we propose an accurate and fully analytical model for the distortion due to lost frames in wireless communication systems. The proposed model builds on long-term average properties of the video source. In our analysis, we combine the properties of the video sequence and those of the wireless transmission link. Finally, we provide an asymptotic analysis of the video transmission through a wireless channel. We compare the results to those obtained by using less sophisticated models, like a (D-R)-function that is built on a Gaussian memoryless source. It is shown that the obtained results are substantially different.
机译：在本文中，我们首先为预测视频源编码的序列级失真率（D-R）性能开发了一个简单但准确而全面的模型。该模型专注于源编码器的输入输出行为，并需要非常有限的经验数据来设置其工作参数，即三对速率和失真。然后，我们为无线通信系统中由于丢帧而引起的失真提出了一个准确而完整的分析模型。所提出的模型建立在视频源的长期平均特性之上。在我们的分析中，我们结合了视频序列和无线传输链路的属性。最后，我们提供了通过无线通道进行视频传输的渐近分析。我们将结果与使用不太复杂的模型（例如基于高斯无记忆源构建的（D-R）函数）获得的结果进行比较。结果表明，所得结果有很大不同。

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