} P_{e}\approx Q\left({\frac{\sqrt{E_0}\sum_{l=0}^{L}\alpha^{(0)}_l\beta_l}{\sqrt{\frac{E_0}{N_cN}\sigma_{IFI,0}^0+\frac{E_0}{N}\sigma_{IFI,0}^0+ \frac{0}{N}\sum_{k=0}^{N_u}E_k\sigma_{MAI,k}^0+\sigma_n^0\sum_{l=0}^{L}\beta_l^0}}}\,\,\right),$$ where $