基于多竞标评价的自组网功率控制方法研究

Study of multi-bid evaluation based power control algorithms for Ad hoc networks

由于无线自组网络无中心、自组织,网络中各节点发送信息都无须管理设施,且可以自由选择各自的发送功率,这使得功率控制成为无线自组网无线资源管理问题中的重要研究课题。提出了一种基于多竞标评价方法的无线自组网功率控制算法。该方法提出一种带有干扰计价的新型利用率函数,然后在假设利用率函数仅依赖于信干噪比,且计价函数与干扰成比例的前提下,将功率控制问题建模为一种非合作的功率控制博弈模型,最后证明了这种带干扰计价的非合作模型的纳什均衡的存在性和唯一性。仿真结果表明,相对现有算法,所提算法具有更高的收敛速率。

Due to the non-centralization and self-organization of Ad hoc networks,network nodes don＇t need management infrastructure to transmit information and have the freedom of any management. It makes power control problem an important component of radio resource management in Ad hoc networks. This paper proposed a multi-bid evaluation based power control algorithm. The algorithm firstly proposed a new utility function with pricing of interference,and secondly under the assumption that the utility function only depended on signal to interference plus noise ratio,and that the pricing function was proportional to interference,modeled the power control problem a kind of non-cooperative game,finally proved the existence and uniqueness of the Nash equilibrium of this non-cooperative model with pricing of interference. Simulation results show that compared to existing algorithms,the proposed algorithm has a faster convergence rate.