Figure 6

The allocated power to different ELs with the proposed power distribution scheme and the optimal power distribution scheme. The BL's capacity loss is 10% and the ELs' proportional reliability constraint is γ₁ : γ₂ = 1 : 2. The total available transmit power budget for the ELs is assumed to be sufficiently large. The variance of channel estimation error is ${\sigma }_{\Delta H}^2=0.1$. The optimal power distribution uses the exact BER expressions given by [33] instead of the derived BER upper bounds for the proportional reliability constraints.