Error Resilient IPTV for an IEEE 802.16e Channel

• 作者: Laith Al-Jobouri Martin Fleury Mohammed Ghanbari
• 来源期刊: 无线工程与技术(英文)
• 学科: 医学
• 关键词: IEEE 802.16 IPTV Mobile TV Rateless CHANNEL CODING REDUNDANT Slices WIMAX
• 年，卷（期）: wxgcyjsyw,（2）
• 页码范围: 70-79
• 页数: 10页
• 分类号: R73

摘要

Data-partitioning of IPTV video streams is a way of providing graceful quality degradation in a form that will work in good and difficult wireless channel conditions, as experienced by mobile devices. This paper’s proposal is to combine redundant slice protection along with an adaptive channel coding scheme that is also proposed in the paper. Adaptive channel coding is achieved by retransmission when necessary of additional redundant data to reconstruct corrupted packets. In the proposal, outright packet loss is provided for by a form of redundant slice protection. The paper finds that it is preferable: not to simply protect only the highest priority packets;that a moderate quantization level should be employed;and that video quality is differentiated by content type. It is important also to configure the partitioning correctly to remove inter-partition dependencies when possible.