NOMA-2000 Versus PD-NOMA: An Outage Probability Comparison

Non-orthogonal multiple access (NOMA) is an emerging technique promising to accommodate the increasing data rate requirements of next generation networks. In power-domain (PD) NOMA, this challenge addressed by allocating two or more users on each orthogonal resource block while assigning significantly different power levels all users. Recently, interesting alternative conventional PD-NOMA has been NOMA-2000 where done using sets waveforms. letter we make a comparison these NOMA schemes based their outage probabilities analytical expressions are derived without any simplifying assumption about statistical dependencies caused presence than one user signal in block. These derivations validated computer simulation results, which appear tight agreement with analysis and corroborate claim that may outperform under realistic channel conditions overload factors.