论文标题
多载波Noma-FD系统中的电力和子载波分配
Power and subcarrier allocation in multicarrier NOMA-FD systems
论文作者
论文摘要
在本文中，我们研究了多载体非正交多访问（NOMA）完整双工（FD）系统的功率和通道分配问题。在这样的系统中，有多个干扰用户在同一渠道上传输，分配任务是一个非凸面和极具挑战性的问题。我们工作的目的是提出一个接近理论最佳且复杂性有限的解决方案。遵循块坐标下降方法，我们提出了两种算法，基于低复杂性子问题的原始分配问题的分解，可以在拉格朗日双重域中求解，并大大减少计算负载。数值结果显示了我们提出的方法的有效性，这表现优于其他旨在解决NOMA-FD分配的方案，并获得类似于较低复杂性的最佳解决方案的性能。
In this paper, we study the problem of power and channel allocation for multicarrier non-orthogonal multiple access (NOMA) full duplex (FD) systems. In such a system there are multiple interfering users transmitting over the same channel and the allocation task is a non-convex and extremely challenging problem. The objective of our work is to propose a solution that is close to the theoretic optimum but is of limited complexity. Following a block coordinate descent approach, we propose two algorithms based on the decomposition of the original allocation problem in lower-complexity sub-problems, which can be solved in the Lagrangian dual domain with a great reduction of the computational load. Numerical results show the effectiveness of approach we propose, which outperforms other schemes designed to address NOMA-FD allocation and attains performance similar to the optimal solution with much lower complexity.
