作者: Rongqing Zhang , Xiang Cheng , Liuqing Yang
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摘要: In this paper, we investigate the cooperation issue via spectrum sharing when employing physical layer security concept into device-to-device (D2D) communications underlaying cellular networks. First, derive optimal joint power control solutions of communication links and D2D pairs in terms secrecy capacity under a simple case further propose secrecy-based access scheme with best pair selection mechanism. Then, consider more general that multiple can same resource block (RB) one is also permitted to RBs, provide novel mechanism investigated network. Furthermore, formulate provided among as coalitional game. based on newly defined max-coalition order constructed game, merge-and-split-based coalition formation algorithm for achieve efficient effective cooperation, leading improved system rate social welfare. Simulation results indicate efficiency proposed algorithm.