Cooperative Multicasting for Scalable Video in Wireless Networks
Date Issued
2011
Date
2011
Author(s)
Wang, Sheng-Chieh
Abstract
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 two new cooperative multicast schemes called OppCM and CodedCM, respectively. OppCM performs opportunistic listening and conditional demodulating to enhance the system performance. The other scheme, CodedCM, delivers layer-encoded video with multi-resolution modulation through cooperative multicast. We analyze the system performance in terms of average outage probability for four multicast schemes, including direct multicast (for baseline comparison), pure cooperative multicast, and the proposed OppCM and CodedCM. We also compare their performance via simulations, which show that the proposed OppCM and CodedCM both outperform other two schemes, demonstrating that they are indeed excellent solutions to wireless scalable video multicasting.
Subjects
Wireless video multicast
cooperative multicast
scalable video
multi-resolution modulation
outage probability
Type
thesis
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