Fundamental Limits on the Uplink Performance of the Dynamic-Ordered Successive Interference Cancellation Receiver
preprintposted on 2021-10-18, 19:28 authored by Luca LusvarghiLuca Lusvarghi, Maria Luisa Merani
This work puts forth a novel analytical approach to evaluate the performance that power-domain Non-Orthogonal Multiple Access (NOMA) achieves on the uplink of a single cell. A dynamic-ordered Successive Interference Cancellation (SIC) receiver is considered, and both the case of Rayleigh and lognormal-shadowed Rayleigh fading are examined. System performance is assessed analytically, deriving either exact or approximated closed-form expressions, whose correctness and excellent accuracy are validated through Monte Carlo simulations. The analysis discloses the effects on performance of an arbitrary number n of simultaneously transmitting users, therefore unveiling where the insourmountable limits of the dynamic-ordered SIC receiver lie. Moreover, the proposed methodology allows to quantify
the impact of lognormal shadowing on NOMA efficacy.