… relay. To increase the system throughput and reduce the information leakage, we propose
a secure NOMA-based two-way relay network, in which the relay not only protects the network …

… [18]– [20] and full-duplex relay networks [21]… NOMA-based diamond relaying network with
imperfect successive interference cancellation (SIC), where two relays were employed to relay …

… the users and relay. To increase the system throughput and reduce the information leakage,
we propose a secure NOMAbased two-way relay network, in which the relay and each user …

… [19] and [20] extended the application of TWR to NOMA system. In [19], a NOMA two-way
relay network model based on physical layer security performance optimization was proposed. …

… In this connection, the SWIPT based on two-step or three-step two-way relay networks (…
two-way relay represents that two nodes exchange the information by sharing a single relay…

… we consider a more general NOMA assisted two-way relay system with multi-antenna
users and multiple multi-antenna relays. Benefitting from the increased degrees of freedom …

… -NOMA systems has not been done. Motivated by the above discussions, we consider a
TWR-NOMA system where two … the help of a single-antenna DF relay in the presence of a single-…

… [7] designed a HD CNOMA scheme for multiple-antenna relaying networks. Lv et al. [8] …
NOMA user in a NOMA user pair, where the weak NOMA user was helped by the strong NOMA …

… relay networks using NOMA, only a few works have studied the problem of physical layer
security … ], the authors have evaluated SOP for NOMA systems by considering both amplify-and-…

… an only-NOMA based two-way relaying (NOMA-TWRS). This method achieves resource
sharing of two terminal users on the same RB by applying NOMA scheme on both the uplink …