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This paper studies the performance of the uplink Non-Orthogonal MultipleAccess (NOMA) with Joint Maximum-Likelihood Detector (JML). We present ageneralized upper bound of bit-error rate (BER) expression of adaptive M-aryphase-shift keying (M-PSK) over Rayleigh fading channels. Our studies areenriched through the use of a single transmitting antenna by each user andmultiple receiving antennas at the base station (single-input-multiple-output(SIMO)). The derivation of the upper bound expression is obtained consideringan arbitrary constellation size by performing Maximum Ratio Combining (MRC) ofdiversity paths. The extensive computer simulations validate the analysis andit is revealed that the JML outperforms the existing detecting algorithmssignificantly and achieves the full diversity order for each user.

Error Performance of Uplink SIMO-NOMA with Joint Maximum-Likelihood and Adaptive M-PSK