CodedCM: Cooperative Multicasting for Scalable Video in Wireless Networks

Cooperative multicast is a promising technique to combat severe fading and path loss for wireless video delivery. In typical video multicast, nodes under the worst channel condition determine the video delivery quality, thereby limiting system performance. To tackle this problem, we propose a new cooperative multicast scheme called CodedCM, which delivers layer-encoded video with multi-resolution modulation through cooperative multicast. We analyze the system performance in terms of average outage probability for three multicast schemes, including conventional multicast (for baseline comparison), pure cooperative multicast, and the proposed CodedCM, and compare their performance via simulations. The simulation results show that the proposed CodedCM scheme outperforms the other two schemes, demonstrating that it is indeed an excellent solution to wireless scalable video multicasting.