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Video coding with fixed-length packetization for a tandem channel.

Yushi Shen1, Pamela C Cosman, Laurence B Milstein

  • 1Department of Electrical and Computer Engineering, University of California at San Diego, La Jolla, CA 92093-0407, USA. yushen@code.ucsd.edu

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
|February 17, 2006
PubMed
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This study presents a robust scheme for efficient packet video transmission over wireless internet channels, optimizing video coding and channel encoding for reliable data delivery despite errors and erasures.

Area of Science:

  • Computer Science
  • Electrical Engineering
  • Information Technology

Background:

  • Wireless internet channels are prone to bit errors and packet erasures, impacting video transmission quality.
  • Efficient video transmission requires robust coding and error correction strategies.

Purpose of the Study:

  • To develop an efficient scheme for packet video transmission over wireless internet channels.
  • To address challenges of bit errors and packet erasures in wireless networks.

Main Methods:

  • Proposed an optimal algorithm for switching between intra- and inter-coding in packet-switched networks.
  • Integrated the coding algorithm with a channel encoder (CRC outer coder and rate-compatible punctured convolutional inner coder).
  • Extended the framework for time-varying channels using feedback mechanisms and refined distortion estimation.

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Main Results:

  • The proposed optimal mode selection algorithm enhances video transmission efficiency.
  • The integrated channel coding scheme improves system performance under error conditions.
  • Feedback mechanisms and refined distortion estimation further optimize performance on time-varying channels.

Conclusions:

  • The presented scheme offers a robust and efficient solution for packet video transmission over challenging wireless internet channels.
  • The integration of adaptive video coding and advanced channel coding is crucial for reliable multimedia communication.