Wireless Communications
Wireless Personal Communications: An International Journal
Cooperative Communications and Networking
Cooperative Communications and Networking
Cooperative layered video multicast using randomized distributed space time codes
INFOCOM'09 Proceedings of the 28th IEEE international conference on Computer Communications Workshops
Multinode Cooperative Communications in Wireless Networks
IEEE Transactions on Signal Processing
Randomized Space-Time Coding for Distributed Cooperative Communication
IEEE Transactions on Signal Processing
Diversity through coded cooperation
IEEE Transactions on Wireless Communications
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Capacity of a class of relay channels with orthogonal components
IEEE Transactions on Information Theory
Advances in Mobile Multimedia Networking and QoS [Guest Editorial]
IEEE Communications Magazine
IPTV over WiMAX: Key Success Factors, Challenges, and Solutions [Advances in Mobile Multimedia]
IEEE Communications Magazine
Cooperative multihop broadcast for wireless networks
IEEE Journal on Selected Areas in Communications
On the power efficiency of cooperative broadcast in dense wireless networks
IEEE Journal on Selected Areas in Communications
Joint optimal AF relay assignment and power allocation in wireless cooperative networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
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The popularity of multimedia multicast/broadcast applications over wireless networks makes it critical to address the error-prone, heterogeneous and dynamically changing nature of wireless channels. A promising solution to combat channel fading is to explore the cooperative diversity in which users may help each other forward packets. This paper investigates cooperative multicast schemes that use a maximal ratio combiner to enhance the received signal-to-noise ratio (SNR), and provides a thorough performance analysis. Two relay selection schemes are considered: the distributed and the genie-aided cooperation schemes. We derive the closed-form formulation and the approximations of their average outage probabilities.We also analyze the optimal power allocation and relay location strategies, and show that allocating half of the total transmission power to the source minimizes the average outage probability. Our analysis and simulation results show that cooperative multicast gives better performance when more relays help forward signals. Cooperative multicast helps achieve diversity order 2, and user cooperation can significantly reduce the outage probability, especially in the high SNR region. Finally, we compare the two cooperation strategies, and show that distributed cooperative multicast is preferred since it achieves a lower outage probability without introducing extra overhead for control messages.