Table 4 Bit cost of the frequency selective standard complaint FB methods
From: Adaptive CSI and feedback estimation in LTE and beyond: a Gaussian process regression approach
Feedback scheme | Bit cost |
|---|---|
Wideband | 2·(4·N U ) |
Subband level | 2·(4+2·q)·N U |
User-selected | \(2 \cdot (4 + 2 +\lceil log_{2} {N_{\tiny {PRB}}^{\tiny {DL}} \choose \tiny {M}} \rceil)\cdot N_{U} \) |