Abstract
Traditional forward error correction (FEC) mechanisms can be divided into end-to-end FEC protection schemes and hop-by-hop FEC protection schemes. The end-to-end FEC protection schemes over-allocate FEC redundancy to each link and may induce a self-congestion effect in a link. The hop-by-hop FEC protection scheme incurs a long end-to-end delay that harms the video performance at the video receiver. Accordingly, the Adaptive Multi-Hop FEC (AM-FEC) protection scheme is proposed in this paper to improve the quality of video streaming data over Wireless Mesh Networks by means of simultaneously minimizing the end-to-end delay and reducing the FEC computational cost. The AM-FEC protection scheme uses a heuristic algorithm to minimize the number of FEC-encoded segments between the video sender and receiver. Moreover, according to the decodable frame rate the AM-FEC protection scheme can dynamically adjust FEC redundancy on each link to outperform end-to-end FEC protection schemes and hop-by-hop FEC protection schemes. In the experiments, the AM-FEC protection scheme achieves timely loss recovery for delay-sensitive video streaming and outperforms traditional FEC protection schemes interms of video peak signal-to-noise ratio.
Original language | English |
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Pages (from-to) | 1297-1318 |
Number of pages | 22 |
Journal | International Journal of Communication Systems |
Volume | 22 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2009 Oct 1 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications
- Electrical and Electronic Engineering