Table 1 Pilot cost comparison
From: Deep double-pilot-based hybrid precoding in UAV-enabled mmWave massive MIMO
Pilots required | ||
|---|---|---|
Method | Period | |
A period of the beam sampling step | A period of prediction period | |
Proposed | \({N_t}^2+N_{RF}^2(R_{\mathrm{smpl}}-1)\) | \(N_{RF}^2\) |
Taylor expansion | \({N_t}^2R_{\mathrm{smpl}}\) | \({N_t}^2\) |