The Multicarrier NOMA- Assisted Full Duplex IoT Networks for Robust Resource Allocation Using Lightweight Secure Transmission

In this piece, we investigate a full duplex (FD) network where nonorthogonal multi-access (NOMA) is used in both uplink and downlink broadcasts in order to exploit spectrum usage in the Internet of Things (IoT). Eavesdropping may be avoided with the use of physical security layer (PLS) technological advances, which is both effective and low-energy in its operation. We define an issue that maximizes the worstcase total privacy rates subject to QoS and energy efficiency restrictions by optimizing beam forming vectors, noise generation, transmit authorization (TA), and subcarrier operation policy in the occurrence of insufficient channel state data. Due to the nonconvex nature of the problem's formulation, joint optimization is used to split the issue into two more manageable subproblems. The block coordinate descending (BCD) method resolves the first problem of allocating resources in light of a specific subcarrier assignment. Allocating subcarriers is the second problem helped by matching theory. Compared to traditional systems like orthogonal multi-access (OMA) and half-duplex (HD), simulations demonstrate that the suggested approach greatly increases the cumulative secrecy rate. Also highly tolerated are CSI flaws in the absorbed-inside and self-interference channels.