Jamming for Security in Cognitive NOMA with Full-Duplex Energy Scavenging Unlicensed Transmitter
DOI:
https://doi.org/10.4108/eetinis.131.12260Keywords:
NOMA, energy scavenging, cognitive radio, full-duplex, jammingAbstract
The combination of cognitive radio (CR), full-duplex (FD) transmission, energy scavenging (ES), and non-orthogonal multiple access (NOMA) significantly improves spectral efficiency, spectrum utilization, and energy efficiency - key performance indicators in the development of future wireless communication infrastructures. However, the growing threat of eavesdropping necessitates robust physical-layer security mechanisms. The paper proposes NOMA CR networks with FD ES unlicensed transmitter (UT), referred to as NOEHwJ, to exploit primary interference as an energy source for UT's operation and a jamming source to secure UT's information. An in-depth evaluation of reliability and secrecy metrics for NOEHwJ is also presented. Through rigorous theoretical analysis and simulation, the study elucidates the impact of each enabling technology on secrecy capability. It is evident from the results that NOEHwJ delivers marked enhancements in security when compared to the benchmarked orthogonal multiple access (OMA) CR networks with FD ES UT (OEHwJ), thereby demonstrating the superior advantages of jointly employing CR, ES, NOMA, FD, and jamming techniques for the development of wireless communication architectures that are secure, energy-efficient, and adaptable to future demands.
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