Two-Way Relay NOMA Systems under Impacts of Hardware Impairments and CCI

Abstract:
Emerging technologies are creating opportunities to optimize wireless networks. In this paper, a two-way NOMA network with hardware impairments and co-channel interference (CCI) are analyzed. To provide system performance analysis, the closed-from expressions are derived in terms of the outage probability (OP) of the system and the throughput of the system, respectively. In the special case of a high signal-to-noise ratio (SNR), the system performance needs to be evaluated as important in real scenes. Furthermore, the system’s asymptotic analysis is also derived to analyze the impact of hardware impairments on the system at high SNRs. Since efficient successive interference cancellation (SIC) schemes affect the quality of the detection in NOMA users, both imperfect SIC (ipSIC) and perfect SIC (pSIC) are considered. In addition, more insights can be introduced, and the diversity analysis of a pair of NOMA users is provided. Finally, to verify the analytical results Monte Carlo simulations are required for more comparison achieved.