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Channel-aware robust video streaming over wireless LANs using multiple-description FGS coding

机译:使用多描述FGS编码的无线局域网上的通道感知的强大视频流

摘要

[[abstract]]In this paper, a novel error-resilient coding technique, named multiple description scalar quantization for fine granularity scalability (MDSQ-FGS), is presented to enhance error resilience capability and to improve the temporal prediction efficiency for video coding over lossy packet networks and wireless channels. MDSQ-FGS video coding scheme based on multiple descriptions coding (MDC) with modified multiple description scalar quantization (MDSQ) and partial predictions are proposed to control drifting error without too much reduction in efficiency. We also combine the benefits of multiple stream coding and multiple path transmission to maintain best constant video quality despite packet loss when roaming in wireless LANs (WLANs). Simulation results indicate that the proposed coding system outperforms the normal MPEG-4 FGS coder for coding efficiency, and can significantly improve the quality of streamed video when mobile client roams in WLAN.
机译:[[摘要]]本文提出了一种新的抗错误编码技术,即用于精细粒度扩展的多描述标量量化(MDSQ-FGS),旨在增强错误恢复能力并提高视频编码的时间预测效率。有损分组网络和无线信道。提出了一种基于MDSQ-FGS视频编码方案,该方案基于具有改进的多描述标量量化(MDSQ)的多描述编码(MDC)和部分预测功能来控制漂移误差,而不会大大降低效率。我们还结合了多流编码和多路径传输的优势,即使在无线LAN(WLAN)漫游时丢包也能保持最佳的恒定视频质量。仿真结果表明,所提出的编码系统在编码效率方面优于常规的MPEG-4 FGS编码器,并且可以显着提高移动客户端在WLAN中漫游时的流式视频质量。

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