Forward Error Correction (FEC) plays an increasingly important role in communication systems. It will improve the capacity of a channel via adding some carefully designed redundant packet with the source data being transmitted through the channel. In this paper, the performance of packet-level forward error correction schemes that include end-system and network centric are in terms of both packet loss rate and average PSNR of video streaming transmission after error recovery. We describe about the based on end-system centric are MAC retransmission and packet-size adaptation, and then describe about based on network centric are multi-path transmission and multi-hop transmission.
