基于非合作博弈的OFDMA无线多跳中继网络上行链路资源分配算法

Resource allocation algorithm based on non-cooperative game theory in uplink OFDMA multi-hop relay networks

研究了基于OFDMA多址技术的无线多跳中继网络上行链路资源分配问题。首先,在最大发射功率等约束条件下,建立了多小区OFDMA无线多跳中继网络上行链路的资源分配优化模型。将非合作博弈论和定价机制引入后,该优化问题可转化为在每个子信道上独立地进行功率分配。基于非合作博弈的功率分配模型中的纳什均衡点的存在性和唯一性得到了证明,并给出了具体的分布式求解算法。仿真结果表明,所提算法能在大幅减少系统总发射功率的情况下,有效地提升系统吞吐量,达到较高的能效比。

Resource allocation issue in uplink OFDMA multi-hop relay networks was investigated.Firstly,with con-straints such as maximum transmission power being imposed,a multi-cell optimization model for resource allocation in uplink OFDMA multi-hop relay networks was formulated.By applying non-cooperative game and pricing theories,the optimization is transformed into the case where power was independently allocated on each sub-channel.The existence and uniqueness of Nash equilibrium for power allocation model which was based on non-cooperative was proven,and accordingly a distributed algorithm was proposed.Simulation results show that,the proposed algorithm can improve the system throughput effectively while profoundly reducing total system transmission power,thus achieving much higher en-ergy efficiency ratio.