Inter-Layer FEC Aided Unequal Error Protection for Multi-Layer Video Transmission in Mobile TV
Layered video coding creates multiple layers of unequal importance, which enables them to progressively refine the reconstructed video quality. When the Base Layer (BL) is corrupted or lost during transmission, the Enhancement Layers (ELs) must be dropped, regardless whether they are perfectly decoded or not, which implies that the transmission power assigned to the ELs is wasted. In this paper, the authors propose an interlayer Forward Error Correction (FEC) coded video transmission scheme for mobile TV. At the transmitter, the proposed InterLayer (IL) coding technique implants the systematic information of the BL into the ELs by using exclusive-OR operations. At the receiver, the implanted bits of the ELs may be utilized for assisting in decoding the BL.