Stochastic Geometric Performance Analyses for the Cooperative NOMA With the Full-Duplex Energy Harvesting Relaying

Abstract

In this paper, the cooperative non-orthogonal multiple access (C-NOMA) transmission with the full-duplex energy harvesting relaying (FDEHR) is investigated for enhancing the spectrum and energy efficiency. The exact outage probability is derived over Nakagami-$m$ frequency-selective fading channels. In addition, a novel near-far user pairing strategy is proposed in accordance with the geographic limitations, where the energy-harvesting-effective and successive-interference-cancelation-effective zones are demarcated according to power splitting factors, energy conversion coefficients, and power allocation parameters. The stochastic geometric model is also studied in which all users are distributed as an independent homogeneous Poisson point process. Then, the transmission probability of the C-NOMA conveyance with the FDEHR for a typical user is analyzed by utilizing the Markov chain model. Monte Carlo simulation is executed to verify the mathematical derivations. Both analytical and simulation results demonstrate that the near user possesses a lower outage probability than the far user does under the original NOMA transmission, whereas the outage performance of the far user could be improved so that he behaves better than the near user when the C-NOMA transmission with the FDEHR is applied.