基于非合作博弈论的CoMP系统功率分配算法

A Game Theoretical Power Allocation for Downlink CoMP System

针对下行单用户多点协作传输系统(SU-Co MP)的资源分配问题,提出一种基于非合作博弈论的动态功率分配算法。首先协调不同用户在同频子信道上的发射功率,然后建立新定价机制下的功率分配博弈模型。在此基础上分析Co MP用户在其协作簇内功率分配时相互协作,推导该模型的求解算法,最后论证该算法纳什均衡解的存在性和唯一性。仿真结果表明,所提算法能提升边缘用户频谱利用率,减小功耗。

For downlink single-user Coordinated multi-point transmission（ SU-Co MP） system,a novel dynamic power allocation algorithm using non-cooperative game theory is investigated to solve the problem of resource allocation.First,to balance power schedule for different users in the same subcarrier,a power allocation game based on the pricing function is formulated.Therefore,the transmission nodes for each selected Co MP user with refined transmission power is coordinated,and an effective power allocation algorithm is designed to obtain the Nash Equilibrium.At last,the existence and uniqueness of Nash Equilibrium is proved for the proposed game model.Simulation results show that the proposed algorithm improves the spectrum utilization for cell-edge users,and saves the transmission power.