PHY‐layer Security of MIMO‐NOMA with SWIPT

Abstract

A flexible and secure artificial noise (AN)‐aided framework is proposed for multi‐input multioutput (MIMO) nonorthogonal multiple‐access (NOMA) systems. We guarantee resource allocation in a multicluster paradigm with simultaneous wireless power and information transfer (SWIPT) exploiting the power‐splitting technique. This recourse allocation is fulfilled where: (a) the energy‐harvesting receivers do not intercept the nonrelative data; while (b) decoding the relative cell‐edge user in the same cluster. We provide closed‐form solutions, as well as proposition of the controller π ∈{πα − πκ} for the case of imperfect channel estate information (CSI). Simulation results show that our proposed framework is superior to the existing work in terms of rate enhancement and energy efficiency maximization, experiencing the acceptable complexity ≈Onitalicit()italiciN24.5.