… research of resource allocation under untrusted relay case to the OFDMA relaying system.
User-… downlink and uplink NOMA with an untrusted relay,” IEEE Trans. Commun., vol. 68, no. …

… • We model the uplink NOMA transmissions in IoT using the … cal layer security characterization
of uplink NOMA in IoT. As the … the internet of things with an untrusted relay,’’ IEEE Access, …

… We consider an uplink C-NOMA-SPC system, where two cell-edge users (ie, Ui, i = {1, 2}) …
mi, with a base station (ie, S) via a half-duplex relay (ie, R), as shown in Fig. 1. Users are …

… In [26], the relay assisted PLS downlink NOMA network has been implemented and studied
… through uplink transmission, the BS obtains the information about 𝑅1 users. Once the NOMA …

… untrusted relay simultaneously transmit signals through non-orthogonal channels was
considered. It was concluded that the proposed non-orthogonal relaying … BS in the uplink of actual …

… In [17], the authors have considered the uplink and downlink NOMA strategy to transmit the
data by using the cooperation of the relay which is untrusted. In [18], the uplink NOMA has …

… al investigated the secrecy performance of an individual user in an uplink NOMA system,
whose … transmission in NOMA networks with an untrusted amplify-and-forward relay jammed by …

… disparities between uplink NOMA and downlink NOMA in terms of PLS. In uplink NOMA,
the … Two models for the relay, trusted and untrusted relay, are taken into consideration when …

… relaying protocol for uplink NOMA [25], where the data of both UDs need to be correctly
decoded before forwarding to AP, we adopt the partial DF relaying … an unreliable communication …

… In our cooperative CR NOMA system, ST acts as an untrusted relay and hence, the
instantaneous secrecy capacity C s can be expressed as(14) C S = 1 2 log 2 ( 1 + γ PD ) - 1 2 log 2 ( …