CLPC: Cross-Layer Product Code for Video Multicast over IEEE 802.11

In the wireless network, both random errors and burst errors do occur due to the channel noise. In order to combat such heterogeneous error patterns, we employ an adaptive error protection based on product code. The proposed product code-based protection in network includes cross-layer protection, because each layer experiences a different type of channel errors. We improve the decoding efficiency by adopting a proper protocol stack which allows upper-layers to exploit erroneous packets for the packet reconstruction. In addition, we consider the video multicast over IEEE 802.11 and formulate an aggregated multicast video-quality maximization problem under bandwidth constraint. The results show that the proposed protection scheme improves the aggregated multicast videoquality thanks to the cross-layer optimization. keywords: video multicast over IEEE 802.11, Reed-Solomon (RS) code, forward error correction (FEC), product code, crosslayer optimization.