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Joint H.264/scalable video coding-multiple input multiple output rate control for wireless video applications

机译:联合H.264 /可缩放视频编码-用于无线视频应用的多输入多输出速率控制

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摘要

Integrating H.264 scalable video coding (SVC) technology with a multiple input multiple output (MIMO) wireless system can significantly enhance the overall performance of high-quality real-time wireless video transmissions. However, the state-of-the-art techniques in these two areas are largely developed independently. In this research, with the objective to deliver the optimal visual quality and accurate rate regulation for wireless video applications, the authors propose a novel joint H.264/ SVC-MIMO rate control (RC) algorithm for video compression and transmission over MIMO systems. The authors first present a systematic architecture for H.264/SVC compression and transmission over MIMO systems. Then, based on MIMO channel properties, the authors use a packet-level two-state Markov model to estimate MIMO channel states and predict the number of retransmitted bits in the presence of automatic repeat request. Finally, an efficient joint rate controller is proposed to regulate the output bit rate of each layer according to the available channel throughput and buffer fullness. The authors' extensive simulation results demonstrate that their algorithm outperforms JVT-W043 RC algorithm, adopted in the H.264/SVC reference software, by providing more accurate output bit rate, reducing buffer overflow, lessen frame skipping, and finally, improves the overall coding quality.
机译:将H.264可伸缩视频编码(SVC)技术与多输入多输出(MIMO)无线系统相集成可以显着提高高质量实时无线视频传输的整体性能。但是,这两个领域的最新技术在很大程度上是独立开发的。在这项研究中,为了为无线视频应用提供最佳的视觉质量和准确的速率调节,作者提出了一种新颖的联合H.264 / SVC-MIMO速率控制(RC)算法,用于MIMO系统上的视频压缩和传输。作者首先介绍了用于MIMO系统的H.264 / SVC压缩和传输的系统体系结构。然后,基于MIMO信道属性,作者使用数据包级的两态马尔可夫模型来估计MIMO信道状态,并在存在自动重复请求的情况下预测重发位数。最后,提出了一种有效的联合速率控制器,根据可用的信道吞吐量和缓冲区充满度来调节每一层的输出比特率。作者广泛的仿真结果表明,通过提供更准确的输出比特率,减少缓冲区溢出,减少跳帧并最终改善整体性能,他们的算法优于H.264 / SVC参考软件中采用的JVT-W043 RC算法。编码质量。

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  • 来源
    《Image Processing, IET》 |2012年第1期|p.43-52|共10页
  • 作者

    Yang J.; Sun Y.; Wu Y.; Sun S.;

  • 作者单位

    School of Computer Science and Engineering, University of Electronic Science & Technology of China, Chengdu 610054, People's Republic of China;

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  • 正文语种 eng
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