  Non-orthogonal multiple access (NOMA) is an enabling technique to support
massive connectivity and utilize the radio resources more efficiently. A number
of novel NOMA schemes have been proposed for 5G New Radio (NR) standards. In
this study, we evaluate various 5G NOMA methods for different military
communications scenarios. First, we provide the description of basic principles
in each evaluated scheme, then we investigate and compare their performances
under different system parameters such as spectral efficiency, overload factor
and antenna numbers in various channel models. Finally, we provide the
discussions and insights on the suitability of the evaluated schemes for the
considered military scenarios based on simulations.
