Cycle-based rate control for one-way and interactive video communications over wireless channels

Luigi Atzori, Marwan Krunz, Mohamed Hassan

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

We propose a joint source-rate/channel-code control scheme for streaming video over a wireless channel. The scheme is designed to maximize the achievable source rate while guaranteeing an upper bound on the probability of starvation at the play-back buffer. It can be applied to both one-way and interactive video communications. Rate control is performed adaptively on a percycle basis, where a cycle consists of a "good" channel period and the ensuing "bad" period. This cycle-based approach has two advantages. First, it reduces the fluctuations in the source bit rate, ensuring smooth variations in video quality. Second, it makes it possible to derive simple expressions for the starvation probability at the playback buffer, which we use to determine the optimal source rate and channel code for the good and bad periods of the subsequent cycle.

Original languageEnglish (US)
Pages (from-to)176-184
Number of pages9
JournalIEEE Transactions on Multimedia
Volume9
Issue number1
DOIs
StatePublished - Jan 1 2007

Keywords

  • Adaptive forward error correction (FEC)
  • Channel-code optimization
  • Playback buffer control
  • Source rate control
  • Wireless channels

ASJC Scopus subject areas

  • Signal Processing
  • Media Technology
  • Computer Science Applications
  • Electrical and Electronic Engineering

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