论文标题
关于多抗Aantenna HD-NOMA，SCMA和PD-NOMA方案的性能比较
On Performance Comparison of Multi-Antenna HD-NOMA, SCMA and PD-NOMA Schemes
论文作者
论文摘要
在本文中，我们研究了拟议的新型多种抗原域非正交多访问（MA-HD-NOMA）方案的上行链路通道吞吐量的性能。该方案结合了传统的稀疏代码多重访问（SCMA）和功率域NOMA（PD-NOMA）方案，以增加与常规NOMA计划相比，使用的用户数量，并在基站使用多个天线。为此，制定了MA-HD-NOMA方案的联合资源分配问题，以最大化整个系统的总和率。为了进行全面的比较，也制定了具有相同过载因子的多端antenna SCMA（MA-SCMA）和多ANTENNA PD-NOMA（MA-PD-NOMA）方案的联合资源分配问题。每个配方的问题都是混合成员非凸线程序，因此，我们应用了连续的凸近似（SCA），并重新升级为$ \ ell_1 $最小化的方法来获得快速收敛的解决方案。数值结果表明，与MA-SCMA和MA-PD-NOMA相比，所提出的MA-HD-NOMA方案具有较高的性能。
In this paper, we study the uplink channel throughput performance of a proposed novel multiple-antenna hybrid-domain non-orthogonal multiple access (MA-HD-NOMA) scheme. This scheme combines the conventional sparse code multiple access (SCMA) and power-domain NOMA (PD-NOMA) schemes in order to increase the number of users served as compared to conventional NOMA schemes and uses multiple antennas at the base station. To this end, a joint resource allocation problem for the MA-HD-NOMA scheme is formulated that maximizes the sum rate of the entire system. For a comprehensive comparison, the joint resource allocation problems for the multi-antenna SCMA (MA-SCMA) and multi-antenna PD-NOMA (MA-PD-NOMA) schemes with the same overloading factor are formulated as well. Each of the formulated problems is a mixed-integer non-convex program, and hence, we apply successive convex approximation (SCA)- and reweighted $\ell_1$ minimization-based approaches to obtain rapidly converging solutions. Numerical results reveal that the proposed MA-HD-NOMA scheme has superior performance compared to MA-SCMA and MA-PD-NOMA.
