Home Gateway for Three-Screen TV Using H.264 SVC and Raptor FEC
Home Gateway for Three-Screen TV Using H.264 SVC and Raptor FEC
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DOI：
10.1109/tce.2011.6131138
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发表时间：
2011-11-01
影响因子：
4.3
通讯作者：
Jayant, Nikil
中科院分区：
文献类型：
--
作者：
Ryu, Eun-Seok;Jayant, Nikil
介绍了一种面向三屏电视业务的多媒体家庭网关的设计与实现。建议的家庭无线网络使用可伸缩视频编码(SVC)和具有Raptor前向纠错(FEC)的不等错误保护，以在带宽可变、容易出错的无线网络上最大限度地提高体验质量(QOE)。该网关包括(A)动态SVC层交换，其使服务器能够执行从SVC比特流中选择适当的层；(B)自适应Raptor FEC，其根据分组丢失率(PLR)控制Raptor FEC的开销；(C)(A)和(B)的有效组合；以及(D)在整个网关体系结构中基于切片组的选择性流传输。本文介绍了家庭网关的体系结构，并与传统的SVC流媒体进行了性能评估实验。在进行的实验中，视频质量的增益在峰值信噪比(PSNR)上从2到5dB不等，并有相应的主观改善。家庭网关输入端的比特率总体降低幅度从28%到36%不等(1)。
This paper describes the design and implementation of a multimedia home gateway for three-screen television (3STV) service. The proposed in-home wireless network uses scalable video coding (SVC) and unequal error protection with Raptor forward error correction (FEC) for maximizing the quality of experience (QoE) over the variable-bandwidth, error-prone wireless network. The gateway incorporates (a) dynamic SVC layer-switching, which enables the server to perform selecting appropriate layers from SVC bitstreams, (b) adaptive Raptor FEC, which controls the overhead of Raptor FEC according to packet loss rate (PLR), (c) an efficient combination of (a) and (b), and (d) slice group-based selective streaming in the overall gateway architecture. The paper explains the home gateway architecture as well as experiments for performance evaluation as compared to that of traditional SVC streaming. In the experiments conducted, gains in video quality vary from 2 to 5dB in peak signal-to-noise ratio (PSNR), with corresponding subjective improvements. Overall reductions of bit rate at the input to the home gateway vary from 28% to 36% (1).