Abstract
The use of forward error-control (FEC) coding, possibly in conjuction with ARQ techniques, has emerged as a promising approach for video transport over ATM networks for cell-loss recovery and/or bit error correction, such as might be required for wireless links. Although FEC provides cell-loss recovery capabilities it also introduces transmission overhead which can possibly cause additional cell losses. A methodology is described to maximize the number of video sources multiplexed at a given quality of service (QoS), measured in terms of decoded cell loss probability, using interlaced FEC codes. The transport channel is modelled as a block interference channel (BIC) and the multiplexer as single server, deterministic service, finite buffer supporting N users. Based upon an information-theoretic characterization of the BIC and large deviation bounds on the buffer overflow probability, the described methodology provides theoretically achievable upper limits on the number of sources multiplexed. Performance of specific coding techniques using interlaced nonbinary Reed-Solomon (RS) codes and binary rate-compatible punctured convolutional (RCPC) codes is illustrated.
Original language | English (US) |
---|---|
Pages (from-to) | 174-187 |
Number of pages | 14 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 3653 |
Issue number | I |
State | Published - Jan 1 1999 |
Event | Proceedings of the 1999 Visual Communications and Image Processing - San Jose, CA, USA Duration: Jan 25 1999 → Jan 27 1999 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering