Secure Wireless Communications under Realistic Operation Constraints

The paper proposes secure wireless communications under practical operation constraints including spectral efficiency, erroneous channel information, and power-constrained multi-antenna users. To release these constraints, the paper exploits non-orthogonal multiple access (NOMA) technology for high spectral efficiency, radio frequency energy harvesting for self-powering, and multiple-input multiple-output (MIMO) transmission for multi-antenna users. In this paper, wireless communications is secure with interfering operation. For evaluation of the efficacy of the proposed secure wireless communications, the research also presents results considering erroneous channel information by modelling it with a well-acknowledged paradigm. Innumerable results demonstrate that the proposed secure wireless communications is superior to the baseline scheme without interfering.