Adaptive joint source and channel coding scheme for H.264 video multicasting over wireless LAN

被引：1
|
作者：
Liu Z.-Y. [1 ]
Liu H. [2 ]
Wang Y. [1 ]
机构：
[1] Six MetroTech. Center, Polytechnic University, Brooklyn
[2] Corporate Research Lab., Thomson Inc, Princeton
来源：
Journal of Zhejiang University-SCIENCE A | 2006年 / 7卷 / 5期
关键词：
Adaptive joint source and channel coding; H.264; Multicast over 802.11 wireless local area networks;
D O I：
10.1631/jzus.2006.A0837
中图分类号：
学科分类号：
摘要：
This paper proposes an adaptive joint source and channel coding scheme for H.264 video multicast over wireless LAN which takes into account the user topology changes and varying channel conditions of multiple users, and dynamically allocates available bandwidth between source coding and channel coding, with the goal to optimize the overall system performance. In particular, source resilience and error correction are considered jointly in the scheme to achieve the optimal performance. And a channel estimation algorithm based on the average packet loss rate and the variance of packet loss rate is proposed also. Two overall performance criteria for video multicast are investigated and experimental results are presented to show the improvement obtained by the scheme.
引用
收藏
页码：837 / 846
页数：9
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