Asymmetric Dual-Hop NOMA based Communication System with Practical Constraints: Imperfect CSI, HWI and ISIC

In this paper, we present an asymmetric dualhop decode-and-forward relay-based Non-Orthogonal Multiple Access (NOMA) based communication system. The source-to-relay link is characterized by $\eta-\mu$ distribution, while the relay to end users is characterized by Rayleigh distribution. Further, we have incorporated hardware impairments (HWI), and channel state information (CSI) errors due to imperfect successive interference cancellation (SIC), at the relay and end users. The mathematical framework for outage probability (OP) is being derived, and the analytical results are verified using Monte Carlo simulation results.