Performance of SWIPT-Enabled FD TWR Network With Hardware Impairments and Imperfect CSI

—Cooperative communication with energy harvesting capability increases network coverage and provides a green and sustainable solution for future wireless technologies. In this article, we analyze the performance of a two-way relay network, where bidirectional information exchange between two nodes takes place via simultaneous wireless information and power transfer-enabled relay node, operating in full-duplex (FD) mode over generalized Nakagami- m fadingchannels.Differentnonlinearpowerampliﬁer (NLPA) models, such as solid-state power ampliﬁer, traveling wave tube ampliﬁer, and soft envelope limiter, are considered at the relay node. The effect of practical constraints, such as imperfect channel state information (CSI) and transceiver hardware impairments (HIs), is considered. Further, we consider the impact of residual self-interference (RSI) due to imperfect successive interference cancellation in the FD mode. For performance analysis, the closed-formexpressionsofoutageprobability(OP),asymptoticOP,systemthroughput,energyefﬁciency,ergodiccapacity,andasymptoticergodiccapacityarederived.Thediversityorderoftheconsiderednetworkisevaluated.Further,theimpactofimperfectCSI,NLPA,HIs,RSI,andotherparametersarehighlightedonthesystemperformance.TheperformanceofFDandhalf-duplexmodeisalsocompared.MonteCarlosimulationsconﬁrmtheaccuracyofthederivedclosed-formexpressions.