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针对盲干扰对齐机制平均功率分配导致功率利用率低的问题,提出了一种半盲干扰对齐功率分配算法.在功率受限场景下,该算法能够提高整体性能,同时保障个体性能.首先,分析了功率分配对盲干扰对齐性能的影响;其次,建立了功率受限的盲干扰对齐模型,提出了最大化传输速率同时保护用户个体性能的功率分配目标;最后,为满足目标函数的约束,提出基于回溯梯度下降的功率分配算法.仿真结果表明,相比于平均功率分配,所提算法可以将系统性提高约53%.
In order to solve the problem of low power efficiency due to average power allocation of blind interference alignment, a semi-blind interference alignment power allocation algorithm is proposed, which can improve overall performance and ensure individual performance.Firstly, Then, a power-limited blind interference alignment model is established, and a power allocation target is proposed to maximize the transmission rate while protecting the individual performance of the user. Finally, in order to meet the constraints of the objective function, The power allocation algorithm based on backtracking gradient decreases.The simulation results show that compared with the average power allocation, the proposed algorithm can improve the system by about 53%.