Figure 7

Ergodic capacities for different numbers of phase bits. They are presented as a function of the number of active array elements when the average SNR $\overline{\gamma }=10$ dB. Dashed lines represent the following theoretical curves: N = 0 (∘), N = 1 (□), N = 2 (◇), and N = 3 ($▿$). Solid (black) line: full CSI at RSs. Simulated values are denoted by (^∗). Channel amplitudes are fixed with perfect power balance.