5G移动网络中终端直连方式下用户发送功率自适应优化方法

摘要

As a strong supplementary technique to the traditional mobile communication networks,the concept of device to device was introduced into the future 5G mobile communication networks.To solve the problems of base station-free transmission manner and the complex interference environment induced by the non-coordinated user data transmission,an adaptive transmission power allocation algorithm based on game theory and fuzzy logic was proposed,to utilize the system power and frequency in a more efficient way while minimizing the interference to other users.Through the simulation results,the proposed algorithm outperformed the conventional equal power allocation and distributed water-filling algorithms in the aspect of user received data rates.%作为对传统移动通信网络的有力补充,终端直连(device to device,D2D)的概念被引入未来5G移动通信网络中.为了解决D2D方式中无基站中转的通信问题及非基站控制用户无序发送所带来的复杂干扰环境及覆盖盲区情况下发送资源的自适应优化分配问题,提出了一种基于博弈理论与模糊逻辑理论的发送功率自适应分配算法,用以充分利用系统的功率与频谱资源,同时降低功率分配对其他用户产生的干扰影响.通过对计算机仿真结果的分析,提出的算法相对于传统的平均功率分配算法及分布式注水算法有一定的性能提高.