One cross-layer feedback based on video coding scheme is proposed in this paper

which applies both adaptive modulation coding (AMC)and automatic repeat request (ARQ)techniques to provide an adaptive wireless video coding solution. Within this method

timely channel-aware can be obtained by the feedback information from the PHY layer

and then the video encoder at application (APP)layer can take accurate rate control to adapt the channel’s bandwidth varying. Experimental results showed that

compared to the existed scheme without feedback and channel-aware

the proposed method can get a significant improvement in Peak Signal-to-Noise Ratio (PSNR)for wireless video transmission.