Cell-Free Massive MIMO-NOMA Systems With Imperfect SIC and Non-Reciprocal Channels. - Aline Ohashi; Daniel Benevides da Costa; André Lucas Pinho Fernandes; Waldeir Monteiro; Ruan Failache; André Mendes Cavalcante; João C. W. A. Costa (IEEE Wirel. Commun. Lett., 2021)