论文标题
多电池多载波NOMA中的联合功率和子载波分配
Joint Power and Subcarrier Allocation in Multi-Cell Multi-Carrier NOMA
论文作者
论文摘要
非正交多访问（NOMA）是针对下一代蜂窝网络提出的一项技术，因为其光谱效率很高和用户连接增强。但是，在文献中，仅提出了单个细胞的NOMA的最佳关节功率和子载波分配。因此，在多细胞方案中，NOMA系统的联合功率和子载波分配的全球最佳算法仍然是一个空旷的问题。在这项工作中，我们提出了一种基于多块优化的算法，用于获得全局最佳解决方案。由于可行的连续干扰取消（SIC），它的复杂性降低了。此外，我们可以调整其优化近似参数以用作基准解决方案，或为多电池多载波Noma系统提供合适的实用解决方案。数值研究表明其有效性。
Non-orthogonal multiple access (NOMA) is a technology proposed for next generation cellular networks because of its high spectral efficiency and enhanced user connectivity. However, in the literature the optimal joint power and sub-carrier allocation for NOMA has been proposed for single cell only. Consequently, a global optimal algorithm for the joint power and sub-carrier allocation for NOMA system in multi-cell scenario is still an open problem. In this work, we propose a polyblock optimization based algorithm for obtaining a global optimal solution. It has reduced complexity due to a necessary and sufficient condition for feasible successive interference cancellation (SIC). Besides, we can adjust its optimization approximation parameter to serve as benchmark solution or to offer suitable practical solution for multi-cell multi-carrier NOMA systems. Numerical studies have shown its effectiveness.
