Performance Enhancement of NOMA for Emerging Wireless Networks Using SIC Repeaters

Non-Orthogonal Multiple Access (NOMA) is an emerging wireless technology and serves as a valuable competitor to its orthogonal counterpart, Orthogonal Multiple Access. The use of NOMA however creates a need for the users to have knowledge about other user signals in order to obtain their own signals. This leaves out a significant security threat where in a malicious node can gain access to the network by simply attacking a node in that area. In the proposed work, we have developed a novel scheme to counter this security gap by performing successive interference cancellation (SIC) at a smart repeater and not by the users. The study shows that implementing this methodology not only improves the overall security of the network but also enhances the data rates of the users. Furthermore, page rank algorithm is utilized allocation of energy coefficients to users in order to maximize. Comprehensive simulations validates the advantages and the potency of the proposed methodology.