Multidimensional Layered Forward Error Correction Using Rateless Codes

C. Hellge, T. Schierl, T. Wiegand
2008 2008 IEEE International Conference on Communications  
Modern layered or scalable video coding technologies generate a video bit stream with various inter layer dependencies due to references between the layers. This work proposes a method for extending forward error correction (FECs) codes following dependency structures within the media. The proposed layer-aware FEC (L-FEC) generates repair symbols so that protection of less important dependency layers can be used with protection of more important layers for combined error correction. The L-FEC
more » ... proach is exemplary applied to rateless LT and Raptor codes. Gains for more important layers can be achieved without increasing the total FEC code rate. The performance gain of the L-FEC is shown by simulation results with receiver-driven layered multicast transmission using scalable video coding (SVC) with a Raptor-based L-FEC.
doi:10.1109/icc.2008.95 dblp:conf/icc/HellgeSW08 fatcat:ytrrkqbl2vhsjei4cftpnzfpxi