Power Control Algorithm of Cognitive Radio Based on Non-Cooperative Game Theory  

基于非合作博弈论的认知无线电功率控制算法（英文）

作　　者：赵军辉 杨涛 贡毅 王娇 付雷 

机构地区：[1]School of Electronics and Information Engineering, Beijing Jiaotong University [2]State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University [3]Key Laboratory of Wireless Sensor Network and Communication, Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences [4]Department of Electrical and Electronic Engineering, South University of Science and Technology of China

出　　处：《China Communications》2013年第11期143-154,共12页中国通信（英文版）

基　　金：partially supported by the National Natural Science Foundation of China under Grant No.61172073;the Open Research Fund of National Mobile Communications Research Laboratory,Southeast University under Grant No.2012D19;the Fundamental Research Funds for the Central Universities,Beijing Jiaotong University under Grant No.2013JBZ01;the Program for New Century Excellent Talents in University of Ministry of Education of China under Grant No.NCET-12-0766

摘　　要：This paper addresses the power con- trol problems of Cognitive Radio （CR） trader transmission power and interference tempera- ture constraints. First, we propose the interfer- ence constraint which ensures that the Quality of Service （QoS） standards for primary users is considered and a non-cooperative game power control model. Based on the proposed model, we developed a logical utility function based on the Signal-to-Interference-Noise Ratio （S/NR） and a novel algorithm network power control. that is suitable for CR Then, the existence and uniqueness of the Nash Equilibrium （NE） in our utility function are proved by the principle of game theory and the corresponding optimi- zations. Compared to traditional algorithms, the proposed one could converge to an NE in 3-5 iterative operations by setting an appropriate pricing factor. Finally, simulation results ver- ified the stability and superiority of the novel algorithm in flat-fading channel environments.This paper addresses the power control problems of Cognitive Radio(CR)under transmission power and interference temperature constraints.First,we propose the interference constraint which ensures that the Quality of Service(QoS)standards for primary users is considered and a non-cooperative game power control model.Based on the proposed model,we developed a logical utility function based on the Signal-to-Interference-Noise Ratio(SINR)and a novel algorithm that is suitable for CR network power control.Then,the existence and uniqueness of the Nash Equilibrium(NE)in our utility function are proved by the principle of game theory and the corresponding optimizations.Compared to traditional algorithms,the proposed one could converge to an NE in 3-5iterative operations by setting an appropriate pricing factor.Finally,simulation results verified the stability and superiority of the novel algorithm in flat-fading channel environments.

关 键 词：cognitive radio non-cooperativepower control game theory utility function Na-sh equilibrium target power 

分 类 号：TN925[电子电信—通信与信息系统] O225[电子电信—信息与通信工程]