  For forthcoming 5G networks, Non-Orthogonal Multiple Access (NOMA) is a very
promising techniques. and in today's world, Line of Sight communication is
becoming increasingly harder to achieve. Hence, technologies like
Reconfigurable Intelligent Surfaces (RIS) emerge. RIS-aided NOMA networks is a
widely researched implementation of RIS. The environment where these networks
are employed are non-homogeneous & non-linear in nature. The effectiveness of
these systems must thus be evaluated using generalized fading channels. In this
paper, the performance of a RIS-aided NOMA is compared with conventional NOMA
in alpha-mu and kappa-mu channels. This paper also shows that the well-known
fading distribution are special cases of these generalized fading channels,
both analytically and through simulation.
