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PLS and Covert Analysis of AAV-Assisted FSO Communication Systems With Downlink RSMA
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Summary
Researchers analyze the physical layer security and covert communication of an autonomous aerial vehicle (AAV)-assisted free-space optical (FSO) system that uses downlink rate splitting multiple access (RSMA) against an eavesdropper named Eve/Willie. The analysis models the generalized Málaga atmospheric turbulence, fog, boresight pointing errors and angle-of-arrival fluctuations, and derives series-based expressions for detection error probability, covert rate, generalized secrecy outage probability, average fractional equivocation and average information leakage rate. The authors optimize rate parameters to minimize secrecy outage and maximize confidential-message throughput.