基于非合作博弈的WBANs功率控制算法  

Power Control Algorithm Based on Non-cooperative Game Theory of WBANs

作　　者：许勇[1] 柯梦雅 刘芬 查千明 Xu Yong;Ke Mengya;Liu Fen;Zha Qianming(School of Mathematics and Computer Science, Anhui Normal University, Wuhu 241000, China)

机构地区：[1]安徽师范大学数学计算机科学学院,安徽芜湖241000

出　　处：《系统仿真学报》2018年第4期1601-1607,共7页Journal of System Simulation

基　　金：安徽省自然科学基金(11040606M137)

摘　　要：针对基于TDMA媒体访问控制方式的无线体域网间干扰模型,利用非合作博弈自适应功率控制算法对体域网中的用户进行功率分配。该算法为用户构造了由收益函数和代价函数所表示的效用函数模型,根据最佳响应策略的迭代方案获得功率控制的纳什均衡策略,使体域网中所有用户的效用函数达到最优化。通过Matlab对不同参数的情况进行仿真,与传统的功率分配方案K-G相比,仿真结果表明,基于非合作博弈自适应功率控制算法有较好的收敛性,当价格因子在3.5-6.9时,体域网的总体效能提高。A non-cooperative self-adaptive power control algorithm is proposed based on the model of TDMA wireless body area networks （WBANs） interference. The algorithm is put forward using payoff function and cost function as utility functions.The transmitting power vector is obtained by the optimal response strategy update. It is proved that the network can reach Nash Equilibrium with the transmitting power vector, and in this situation all the users＇ utility function is maximized. The Matlab is applied to simulation process of the algorithm, during which simulation has been carried out with different parameters. Compared with the traditional allocation scheme K-C, results show that algorithm based on the non-cooperative game theory has a very good astringency. Performance of the system can be improved through the selection of the price factor between 3.5 and 6.9.

关 键 词：无线体域网 功率控制算法 非合作博弈 网间干扰 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]