Exploiting System Performance in AF non-orthogonal multiple access network under impacts of imperfect SIC and imperfect hardware

Abstract

The conventional non-orthogonal multiple access (NOMA) networks with perfect successive interference cancellation (SIC) is studied in many system models in the literature. With regards to SIC operation, this paper considers existence of hardware noise and interference of imperfect SIC operation and then performance degradation under affected factors can be addressed. To examine the system performance of the proposed system, the closed-form formulation of each users are presented in term of outage probability. In high signal to noise ratio (SNR) regime, the corresponding asymptotic outage probability is further considered to provide meaningful insights in our proposed system. In addition, the performance of the proposed scheme is further evaluated on the throughput performance. The numerical examples are deployed by comparing with analytical results to validate the effectiveness of the proposed scheme. Finally, this paper compare system performance in some scenarios in term of the outage/throughput behavior by varying simulation parameters.