Adaptive unequal error protection and VLC reshuffling for image transmission over wireless channels

Tin Tak Cheung, M. S. So, Roger S K Cheng, Khaled Letaief

Research output: Contribution to journalArticle

Abstract

In the third generation mobile communication systems, multimedia data can be transmitted over wireless channels. Hence, there has been significant amount of research on multimedia (image or video) transmission over wireless links in recent years. However, image and video bit-streams are very sensitive to errors due to the variable length code (VLC) in the compression process. Hence, it is necessary to employ error resilient techniques to protect the data. In this paper, Adaptive Unequal Error Protection (AUEP) and VLC reshuffling techniques are proposed. The basic idea of AUEP is to remove a certain number of high frequency DCT coefficients in each long MB according to the current channel characteristics, and allow a stronger channel coding to be applied without additional bandwidth expansion. On the other hand, the VLC reshuffling is used for reordering the important VLCs to the beginning of each MB. The simulation results prove that the proposed scheme gives significant improvement in the image quality.

Original languageEnglish
Pages (from-to)800-804
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume2
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Variable Length Codes
Unequal Error Protection
Image Transmission
Image communication systems
Multimedia
Channel Coding
Reordering
Mobile Communication
Mobile Systems
Image Quality
Communication Systems
Channel coding
Mobile telecommunication systems
Compression
Bandwidth
Image quality
Telecommunication links
Necessary
Coefficient
Simulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Adaptive unequal error protection and VLC reshuffling for image transmission over wireless channels. / Cheung, Tin Tak; So, M. S.; Cheng, Roger S K; Letaief, Khaled.

In: IEEE Vehicular Technology Conference, Vol. 2, 2000, p. 800-804.

Research output: Contribution to journalArticle

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