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CLC number: TN919.8

On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

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Journal of Zhejiang University SCIENCE A 2006 Vol.7 No.5 P.837-846

http://doi.org/10.1631/jzus.2006.A0837


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


Author(s):  Liu Zheng-ye, Liu Hang, Wang Yao

Affiliation(s):  Six MetroTech Center, Polytechnic University, Brooklyn, NY 11201, USA; more

Corresponding email(s):   zhengye@vision.poly.edu, hang.liu@thomson.net, yao@poly.edu

Key Words:  Multicast over 802.11 wireless local area networks (WLAN), Adaptive joint source and channel coding, H.264



Abstract: 
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.

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