For covert mmWave MIMO with finite-resolution DACs, the paper derives the warden's detection error probability and proposes AO and VSH hybrid beamformers to maximize the sum covert rate.
Hierarchical codebook- based multiuser beam training for millimeter wave massive MIMO,
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Hybrid Beamforming Design for Covert mmWave MIMO with Finite-Resolution DACs
For covert mmWave MIMO with finite-resolution DACs, the paper derives the warden's detection error probability and proposes AO and VSH hybrid beamformers to maximize the sum covert rate.