  In this letter, a low-feedback non-orthogonal multiple access (NOMA) scheme
using massive multiple-input multiple-output (MIMO) transmission is proposed.
In particular, the proposed scheme can decompose a massive-MIMO-NOMA system
into multiple separated single-input single-output NOMA channels, and
analytical results are developed to evaluate the performance of the proposed
scheme for two scenarios, with perfect user ordering and with one-bit feedback,
respectively.
