Network-aware source-adaptive video coding for wireless applications

Qi Qu, Yong Pei, Xusheng Tian, James W. Modestino

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations


Packet video transmission over wireless networks is expected to experience bursty packet losses due to noise, interference, multipath effects and the motion of mobile hosts. In order to achieve satisfactory end-to-end video quality in such an environment, we first demonstrate the necessity of adapting to both the source and channel dynamic information at the source encoding side using a combination of adaptive packetization and adaptive infra-updating. We then describe the implementation of an adaptive source encoder which can adaptively adjust its packetization scheme and intra-updating rate according to both the source motion information and channel feedback. Here, motion information is estimated by an exponential weighted moving average (EWMA) approach and channel feedback is provided by RTCP return packets. Finally, we demonstrate the advantages of exploiting source/channel dynamic information through selected simulation results. However, we show that imperfect channel feedback can sometimes be detrimental to system performance.

Original languageEnglish
Title of host publicationProceedings - IEEE Military Communications Conference MILCOM
Number of pages7
StatePublished - Dec 1 2004
EventMILCOM 2004 - 2004 IEEE Military Communications Conference - Monterey, CA, United States
Duration: Oct 31 2004Nov 3 2004


OtherMILCOM 2004 - 2004 IEEE Military Communications Conference
Country/TerritoryUnited States
CityMonterey, CA


  • Channel Feedback
  • Intra-Updating
  • Motion-Level
  • Packet Loss
  • Packetization
  • Video Coding
  • Wireless Network

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Electrical and Electronic Engineering


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