Performance Evaluation of Rate-Control Strategies for real-time Systems Over a Rate-Varying Channel
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| Title | Performance Evaluation of Rate-Control Strategies for real-time Systems Over a Rate-Varying Channel |
| Authors | |
| Abstract | We compare the performance of two real-time systems for communication of distortion-tolerant content such as audio and video over rate-varying channels. The basic difference between the systems is the placement of a buffer either before or after the rate-controlled encoder. For our evaluation we target signal quality versus end-to-end delay. We develop an analytical framework for their comparison, when the systems use a deterministic rate-varying channel. Furthermore, for stochastic rate-varying channels we use the Gilbert-Elliott channel model and suggest some heuristic rate-control strategies for the two systems when communicating over such a channel.Contrary to intuition it is shown that one of the systems performs better than the other system. As the analysis uses approximations, performance is also validated through simulations. |
| Publisher | ACADEMY PUBLISHER |
| Date | 2010-05-01 |
| Source | Journal of Communications Vol 5, No 5 (2010): Special Issue: Multimedia Computing and Communications |
| Rights | Copyright © ACADEMY PUBLISHER - All Rights Reserved.To request permission, please check out URL: http://www.academypublisher.com/copyrightpermission.html. |