A Stackelberg Game for Cooperative Cognitive Wireless Powered Communication Networks with Multiple Primary Users

Qun Li, Ding Xu
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引用次数: 3

Abstract

We consider a cooperative cognitive wireless powered communication network consisting of a cognitive base station (CBS), multiples secondary users (SUs) and multiple wireless powered primary users (PUs). A two stage protocol is adopted, in which the CBS transmits information bearing signals and the PUs harvest energy from these RF signals first, and then the PUs transmit information based on the harvested energy. We assume that the CBS prices the energy transferred to the PUs. The interaction between the CBS and the PUs is modeled as a Stackelberg game, in which the CBS acts as a leader to determine the prices and the time allocation, while the PUs act as followers to determine the required transmit power of the CBS. An algorithm is proposed to achieve the Stackelberg equilibrium. It is shown that the proposed algorithm outperforms the equal-time benchmark algorithm in terms of the utility of the CBS, and is inferior to the equal-time benchmark algorithm in terms of the average utility of the PUs.
多主用户协同认知无线通信网络的Stackelberg博弈
我们考虑了一个由认知基站(CBS)、多个辅助用户(su)和多个无线供电主用户(pu)组成的协作式认知无线供电通信网络。采用两阶段协议,CBS发送承载信息的信号,pu首先从这些射频信号中收集能量,pu根据收集到的能量发送信息。我们假设CBS为转移到pu的能量定价。将CBS与pu之间的交互建模为Stackelberg博弈,其中CBS作为领导者确定价格和时间分配,而pu作为追随者确定CBS所需的发射功率。提出了一种实现Stackelberg平衡的算法。结果表明,该算法在CBS的效用方面优于等时基准算法,而在pu的平均效用方面则不如等时基准算法。
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