论文部分内容阅读
在中继协作正交频分多址(OFDMA/Relay)系统中,应用协作博弈论提出一种比例公平性的多用户中继资源(子载波和功率)分配方案.定义了用户基于比特传输速率的效用函数,并建立中继资源分配的协作博弈模型.求解此博弈的纳什议价解(NBS)具有较高的计算复杂度,为此,提出一种快速子载波与功率联合分配算法,即:先进行固定发射功率的最优子载波分配,再进行最优的发射功率分配,最终通过上述迭代方式获得联合资源分配的NBS.仿真试验表明:与已有的OFDMA/Relay系统资源分配算法相比,所提出的NBS求解算法能够在提高系统频谱资源利用率的同时,对用户进行更为公平的中继资源分配.
In the OFDMA / relay system, a fair proportion of multi-user relay resource (subcarrier and power) allocation scheme is proposed based on collaborative game theory.It is defined that the user’s bit-based transmission rate , And establish a collaborative game model of relay resource allocation.Nash bargaining solution (NBS) for solving this game has a high computational complexity, so a fast subcarrier-to-power joint allocation algorithm is proposed, namely: First, the optimal subcarrier allocation of fixed transmit power is carried out, and then the optimal transmit power allocation is performed, and finally the NBS of the joint resource allocation is obtained by the above iterative method. Simulation results show that compared with the existing OFDMA / Relay system resource allocation algorithm , The proposed NBS solution algorithm can improve the utilization of the system spectrum resources and allocate the relay resources to users more fairly.