基于隐马尔可夫模型和非合作博弈的功率控制

Power Control Based on Hidden Markov Model and Non-cooperative Game

降低功耗是无线传感网研究中的重要问题之一。针对现有无线传感网存在功耗高、能量利用率低等问题,本文提出一种基于隐马尔可夫模型和非合作博弈的功率控制方法。证明了该方法中纳什均衡的存在性和唯一性以及隐马尔可夫模型(HMM)在特定条件下的广义平稳性。通过仿真实验将该算法与已有的基于非合作博弈的控制方法进行比较。仿真结果表明,该算法在能量利用率、收敛性、降低功耗方面均优于原有算法,能够有效延长网络生命周期。

Reducing power consumption is one of the important issues of Wireless Sensor Network (WSN).To solve the problems of high power consumption and low energy efficiency, this paper proposes an algorithm for controlling power based on the Hidden Markov Model (HMM) and non-cooperative game, in which the existence and uniqueness of Nash equilibrium of the proposed algorithm and generalized stationarity of HMM under certain condition are proved.Comparing the proposed algorithm with a previous control algorithm based on non-cooperative game through a simulation experiment, this paper concludes that the proposed algorithm is superior to the previous algorithm in energy utilization, convergence, and power consumption reduction, thus being capable of extending network life cycle effectively.