Table 2 Number of complex scalars communicated over each fronthaul link (either from AP to NC or from NC to AP) during B coherence blocks
Channel estimation | UL signal estimation | UL power allocation | DL data transmission | DL power allocation | |
|---|---|---|---|---|---|
Network-wide SEPA and DTPA | \(B \tau _{p} N L\) | \(B \tau _{u} N L\) | – | \(B (\tau _{d} K + N L)\) | – |
D-UL-SEPA and D-DL-DTPA | – | \(B (\tau _{u} K + K^{2})\) | \(K^{2} + K\) | \(B \tau _{d} K + K^{2}\) | \(K^{2} + K\) |