… Here, we consider a NOMA system with imperfect CSI in which the channel estimation is
given by g m c = g m c ^ + ε , where ε ~ C N ( 0 , σ ε 2 ) is the error of the channel estimation with …

… IRS optimization problems in both perfect and imperfect CSI settings. As demonstrated,
our … users should be lower than some threshold in CR) on our optimization problems. Via …

… In contrast to [10]–[12], this paper examines the NOMAbased … of the CP for the proposed
NOMA-assisted CSTN are derived … 4 illustrates the influence of the imperfect CSI parameters on …

… NOMA system with imperfect CSI. In [12], the authors explored the performance of the downlink
NOMA in the presence of imperfect CSI for … underlay CR-NOMA with imperfect CSI,” IEEE …

… Previously, CRNOMA was only proposed to guarantee the quality of service (QoS) of all
the users in power allocation schemes [4], [5], instead of optimizing the performance of the …

… (CR) and non-orthogonal multiple access (NOMA) techniques. In this respect, this paper
studies the performance of cooperative CR-NOMA … extended by adding imperfect CSI for more …

… Moreover, we evaluate the OP of the CR-NOMA and conventional CR orthogonal MA schemes
to … the impact of the imperfect CSI and primary interference on the OP of the NOMA SDUs. …

… of SWIPT as co-operative NOMA with fixed and cognitive radio (CR) inspired power allocation
… , in this paper, we propose the concept of SWIPT-NOMA in HetNets with imperfect CSI. …

… Besides CR, the key idea of NOMA is to encourage spectrum sharing among multiple users
… papers on imperfect CSI in PLS [32]–[34]. These papers revealed that the imperfect CSI will …

… studies on uplink NOMA schemes have … NOMA (SIMO-CNOMA) performance in the presence
of hardware impairment (HWI), imperfect channel state information (ipCSI), and imperfect …