ABSTRACT

In a non-orthogonal multiple access (NOMA) system, most crucial function at the transmitter is power allocation followed by superposition coding and at the receiver end successive interference cancellation (SIC). The overall system throughput and performance of the system depends on user clustering, power allocation scheme and SIC at receiver, which is expected to have minimal error. In this paper, we compare the performance of different power allocation algorithms through symbol error rate versus signal to noise ratio plot randomising Rayleigh channel conditions. Simulations are done for the power-domain NOMA system. We propose Eigenvalue-based power allocation in NOMA, which performs better than the traditional counterparts. The simulation is carried out for two-user system using MATLAB.

摘要

在非正交多址 (NOMA) 系统中，发射机最关键的功能是功率分配，然后是叠加编码，以及接收机端连续干扰消除 (SIC)。系统的整体系统吞吐量和性能取决于用户集群、功率分配方案和接收器的 SIC，预计其误差最小。在本文中，我们通过符号错误率与信噪比图随机化瑞利信道条件来比较不同功率分配算法的性能。对功率域 NOMA 系统进行了仿真。我们在 NOMA 中提出了基于特征值的功率分配，其性能优于传统的对应物。使用 MATLAB 对两用户系统进行了仿真。