Forward and retransmitted Systematic Lossy Error Protection for IPTV video multicast

Emerging IPTV deployments combine Forward Error Correction (FEC) and packet retransmissions to resist the impulse noise of the Digital Subscriber Line (DSL) links. In this work, we re-engineer such a solution to improve its robustness against impulse noise while keeping it backward-compatible with the current network infrastructure. We propose forward and retransmitted Systematic Lossy Error Protection (SLEP/SLEPr), which effectively provides error resiliency at the expense of some slight loss of video quality. We demonstrate its effectiveness through a set of experiments. We further present an analytical model for SLEP/SLEPr and show that the experimental results can be explained by the analysis.