基于改进的猎食者优化的D2D通信功率控制方法

针对D2D通信中用户复用频谱资源时产生的同频干扰问题，提出了一种改进的猎食者优化算法，对D2D用户进行功率控制。它在满足系统用户通信质量的约束条件下，根据猎人向猎物移动位置和猎物向最安全位置移动的规则来调整D2D发射功率，为了保持搜索与开发的平衡，提高收敛速度和寻优精度，采用Sobol序列对种群进行初始化，并且在猎食者位置更新公式中引入水波动态自适应因子，从而确定D2D用户最佳发射功率。仿真结果表明，该算法可以不仅可以提高系统总吞吐量和降低蜂窝用户受到的干扰，还可以提高收敛速度和寻优精度。

D2D communication power control method based on improved hunter prey optimization algorithm

Aiming at the problem of co-channel interference when users reuse spectrum resources in D2D communication, an improved Hunter prey optimization algorithm is proposed to control the power of D2D users. It adjusts the D2D transmission power according to the rules that the hunter moves to the prey and the prey moves to the safest position under the constraints of satisfying the communication quality of the system users. The Sobol sequence initializes the population, and introduces the water wave dynamic adaptive factor into the predator position update formula, so as to determine the optimal transmit power of D2D users. The simulation results show that the algorithm can not only improve the total throughput of the system and reduce the interference to cellular users, but also improve the convergence speed and optimization accuracy.