Packet video transmission over wireless channels with adaptive channel rate allocation

Wei Ying Kung, Chang-Su Kim, C. C Jay Kuo

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

A robust video communication system based on layered coding and unequal error protection is developed in this work. We consider two video communication scenarios. First, for pre-compressed video bitstreams, a channel code rate allocation scheme is proposed to minimize the expected mean square error subject to a constraint on the overall bit budget. Second, for real-time video transmission, we jointly optimize the quantization parameters and the channel coding rates according to channel conditions. To this end, we develop a simple rate-distortion model for general video coders using DCT and motion compensation, so that the rate and the distortion can be estimated without an expensive encoding procedure. Simulation results show that the proposed algorithms provide acceptable image quality even in high bit error rate environments.

Original languageEnglish
Pages (from-to)475-498
Number of pages24
JournalJournal of Visual Communication and Image Representation
Volume16
Issue number4-5
DOIs
Publication statusPublished - 2005 Aug 1
Externally publishedYes

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Keywords

  • Joint source-channel coding
  • Packet video
  • Robust video transmission
  • Unequal error protection
  • Wireless video

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition
  • Signal Processing
  • Electrical and Electronic Engineering

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