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This article is part of the series Video Analysis and Coding for Robust Transmission.

Open Access Research Article

Source-Adaptation-Based Wireless Video Transport: A Cross-Layer Approach

Qi Qu1*, Yong Pei2, James W Modestino3 and Xusheng Tian3

Author Affiliations

1 Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, CA 92093-0407, USA

2 Department of Computer Science and Engineering, Wright State University, Dayton, OH 45435, USA

3 Department of Electrical and Computer Engineering, University of Miami, Coral Gables, FL 33124, USA

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EURASIP Journal on Advances in Signal Processing 2006, 2006:028919  doi:10.1155/ASP/2006/28919

The electronic version of this article is the complete one and can be found online at: http://asp.eurasipjournals.com/content/2006/1/028919


Received:25 February 2005
Revisions received:23 August 2005
Accepted:26 August 2005
Published:9 March 2006

© 2006 Qu et al.

Real-time packet video transmission over wireless networks is expected to experience bursty packet losses that can cause substantial degradation to the transmitted video quality. In wireless networks, channel state information is hard to obtain in a reliable and timely manner due to the rapid change of wireless environments. However, the source motion information is always available and can be obtained easily and accurately from video sequences. Therefore, in this paper, we propose a novel cross-layer framework that exploits only the motion information inherent in video sequences and efficiently combines a packetization scheme, a cross-layer forward error correction (FEC)-based unequal error protection (UEP) scheme, an intracoding rate selection scheme as well as a novel intraframe interleaving scheme. Our objective and subjective results demonstrate that the proposed approach is very effective in dealing with the bursty packet losses occurring on wireless networks without incurring any additional implementation complexity or delay. Thus, the simplicity of our proposed system has important implications for the implementation of a practical real-time video transmission system.

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