认知无线电网络中基于博弈论的频谱切换方法  

Game-based Spectrum Handoff Scheme in CRN

作　　者：彭云飞 邵尉 卢春兰 PENG Yunfei;SHAO Wei;LU Chunlan(Army Engineering University of PLA,Nanjing Jiangsu 210007,China)

机构地区：[1]陆军工程大学,江苏南京210007

出　　处：《通信技术》2021年第8期1925-1929,共5页Communications Technology

基　　金：江苏省自然科学基金项目(No.BK20160080)。

摘　　要：提出了一种认知无线电网络(Cognitive Radio Networks,CRN)中基于博弈论的频谱切换方法。首先,定义次用户(Secondary User,SU)的期望累积切换时延,并将其作为优化目标。其次,将频谱切换问题表征为Stochastic博弈,其至少存在一个混合策略纳什均衡(Nash Equilibrium,NE)点。再次,利用空间自适应博弈(Spatial Adaptive Play,SAP)算法实现NE点。最后,通过仿真实验验证了所提方案的性能优势。In this paper, a spectrum handoff scheme based on game theory in CRN(Cognitive Radio Networks) is proposed. First, it defines the expected cumulative handover delay(ECHD) of SU(Secondary Users) and takes it as the optimization target. Then, the spectrum handoff problem is characterized as Stochastic game, which has at least one mixed-strategy NE(Nash Equilibrium) point. And then, SAP(Spatial Adaptive Play) algorithm is used to realize NE points. Finally, the performance advantages of the proposed scheme are verified by simulation experiments.

关 键 词：认知无线电网络(CRN) 频谱切换 博弈论 纳什均衡(NE) 

分 类 号：TN929[电子电信—通信与信息系统]