A device-to-device (D2D) group works as relay nodes to aid the information delivery from a source to a destination in cellular\ncommunication network.Within this system, we propose a communication mechanism to aid traditional cellular communication\nand correspondingly borrow some channel resource from traditional cellular communication system for D2D communication. On\none side, to aid cellular communication, we propose a modified A lamouti scheme which does not modify the operation at the base\nstation. This makes our proposed scheme consistent with previous cellular communication system. On the other side, there are\nmany competitive D2D groups that want to potentially utilize the borrowed channel resource from traditional cellular system for\ndelivering their own information.We model this competition as a game and utilize game theory technique to solve this competition\nproblem.
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