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A wireless video transmission system using RCPT/FEC

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3 Author(s)
Duan Dagao ; Sch. of Comput. & Inf. Eng., Beijing Technol. & Bus. Univ., Beijing, China ; Han Zhongming ; Li Wenzheng

The real-time delivery of video data over wireless is a big challenge due to the unreliable and dynamic characteristics of wireless networks, limited bandwidth and high QoS requirements for multimedia applications. According to features of wireless channels, this paper proposes a robust scheme using Rate Compatible Punctured Turbo (RCPT) codes and Forward Error Correction (FEC) parity codes for video stream distribution in wireless access environments. In the scheme, the rate of video data is adjusted based on statistics of Packet Loss Ratio (PLR) and Bit Error Ratio (BER). The RTCP feedback information to the sending end which carries bit error ratio, network packet loss ratio and transmission delay, is used to adjust the RCPT codes and FEC parity encoding. At the same time the packet video data is packed into the different size. The experiment shows that this scheme can provide more satisfied video playback quality in 3G wireless networks with different bit error ratio and packet loss ratio, and also can improve overall network utilization efficiency.

Published in:

Broadband Network & Multimedia Technology, 2009. IC-BNMT '09. 2nd IEEE International Conference on

Date of Conference:

18-20 Oct. 2009

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