Dynamic overlapped spectrum allocation based on potential game in cognitive radio networks  

作　　者：贾亚男 Yue Dianwu 

机构地区：[1]College of Information Science & Technology,Dalian Maritime University [2]National Mobile Communications Research Laboratory,Southeast University

出　　处：《High Technology Letters》2014年第4期401-408,共8页高技术通讯（英文版）

基　　金：Supported by National Natural Science Foundation of China(No.61371091,61301288);Specialized Research Fund for the Doctoral Programof Higher Education(No.20132125110006);the Fundamental Research Funds for the Central Universities(No.3132013334)

摘　　要：In order to make full use of wireless spectrum resources,the behavior of cognitive radio(CR)for dynamic spectrum allocation is analyzed based on the game theoretic framework.The traditional spectrum allocation schemes consider the spectrum allocation among independent frequency bands only,without taking into account mutually overlapped frequency bands.For this reason,an optimal allocation etiquette is defined to promote the cross characteristic of the frequency bands in a dynamic spectrum allocation model.New interference operator and interference temperature constraints are introduced in order to realize calculation of the interference,and the corresponding spectrum allocation scenario can be further formulated as a potential game.Based on the characteristic of dynamic selection using the game theory and the interference avoidance rule of interference temperature,the robustness of CR networks is increased and the scenario is more suitable for the dynamic changing of actual wireless communication and energy saving communication systems.Simulation results show that the signal to interference and noise ratio(SINR) level can be significantly improved through the optimal allocation of any available spectrum.The utilization rate of spectrum and throughput of overall CR networks are increased by fully utilizing the spectrum resources in the dynamic spectrum allocation model.In order to make full use of wireless spectrum resources,the behavior of cognitive radio （CR）for dynamic spectrum allocation is analyzed based on the game theoretic framework.The traditional spectrum allocation schemes consider the spectrum allocation among independent frequency bands only,without taking into account mutually overlapped frequency bands.For this reason,an optimal allocation etiquette is defined to promote the cross characteristic of the frequency bands in a dynamic spectrum allocation model.New interference operator and interference temperature constraints are introduced in order to realize calculation of the interference,and the corresponding spectrum allocation scenario can be further formulated as a potential game.Based on the characteristic of dynamic selection using the game theory and the interference avoidance rule of interference temperature,the robustness of CR networks is increased and the scenario is more suitable for the dynamic changing of actual wireless communication and energy saving communication systems.Simulation results show that the signal to interference and noise ratio （SINR） level can be significantly improved through the optimal allocation of any available spectrum.The utilization rate of spectrum and throughput of overall CR networks are increased by fully utilizing the spectrum resources in the dynamic spectrum allocation model.

关 键 词：cognitive radio （CR） game theory spectrum allocation nash equilibrium 

分 类 号：TN925[电子电信—通信与信息系统]