Behavior Prediction of Untrusted Relays Based on Nonzero-Sum Game  

作　　者：付晓梅 吴晓 汪清 

机构地区：[1]School of Electronic Information Engineering, Tianjin University

出　　处：《Transactions of Tianjin University》2015年第4期371-376,共6页天津大学学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.61101223)

摘　　要：To keep the secrecy performance from being badly influenced by untrusted relay(UR), a multi-UR network through amplify-and-forward(AF) cooperative scheme is put forward, which takes relay weight and harmful factor into account. A nonzero-sum game is established to capture the interaction among URs and detection strategies. Secrecy capacity is investigated as game payoff to indicate the untrusted behaviors of the relays. The maximum probabilities of the behaviors of relay and the optimal system detection strategy can be obtained by using the proposed algorithm.To keep the secrecy performance from being badly influenced by untrusted relay(UR), a multi-UR network through amplify-and-forward(AF) cooperative scheme is put forward, which takes relay weight and harmful factor into account. A nonzero-sum game is established to capture the interaction among URs and detection strategies. Secrecy capacity is investigated as game payoff to indicate the untrusted behaviors of the relays. The maximum probabilities of the behaviors of relay and the optimal system detection strategy can be obtained by using the proposed algorithm.

关 键 词：physical layer security COOPERATIVE communication untrusted RELAY SECRECY capacity nonzero-sum GAME 

分 类 号：TM58[电气工程—电器]