A near-field THz wiretap scheme jointly optimizes signal and artificial-noise focusing points via two one-dimensional searches and a closed-form power split, improving secrecy rate over prior low-complexity designs.
Physical layer security in near-field communications,
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Low Complexity Artificial Noise Aided Beam Focusing Design in Near-Field Terahertz Communications
A near-field THz wiretap scheme jointly optimizes signal and artificial-noise focusing points via two one-dimensional searches and a closed-form power split, improving secrecy rate over prior low-complexity designs.