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Báo cáo hóa học: "Research Article A User Cooperation Stimulating Strategy Based on Cooperative Game Theory in Cooperative Relay Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article A User Cooperation Stimulating Strategy Based on Cooperative Game Theory in Cooperative Relay Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2009 Article ID 294942 11 pages doi 10.1155 2009 294942 Research Article A User Cooperation Stimulating Strategy Based on Cooperative Game Theory in Cooperative Relay Networks Fan Jiang 1 2 Hui Tian 1 2 and Ping Zhang1 2 1 Key Laboratory of Universal Wireless Communications Beijing University of Posts and Telecommunications Ministry of Education Beijing 100876 China 2 Wireless Technology Innovation Institute Beijing University of Posts and Telecommunications Beijing 100876 China Correspondence should be addressed to Fan Jiang fjiangwbc@gmail.com Received 31 January 2009 Revised 8 June 2009 Accepted 16 August 2009 Recommended by Gabor Fodor This paper proposes a user cooperation stimulating strategy among rational users. The strategy is based on cooperative game theory and enacted in the context of cooperative relay networks. Using the pricing-based mechanism the system is modeled initially with two nodes and a Base Station BS . Within this framework each node is treated as a rational decision maker. To this end each node can decide whether to cooperate and how to cooperate. Cooperative game theory assists in providing an optimal system utility and provides fairness among users. Under different cooperative forwarding modes certain questions are carefully investigated including what is each node s best reaction to maximize its utility and what is the optimal reimbursement to encourage cooperation Simulation results show that the nodes benefit from the proposed cooperation stimulating strategy in terms of utility and thus justify the fairness between each user. Copyright 2009 Fan Jiang et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. Introduction Cooperative diversity 1 2 has been widely proposed for .