Figure 4

Intercept probability versus outage probability of conventional direct transmission and proposed multiuser scheduling schemes for different γ _s . N = 8, P _a = 0.8, P _d = 0.9, P _f = 0.1,${\sigma }_{\mathrm{CBS}‒\text{CU}}^2={\sigma }_{{\mathrm{CBS}‒\text{CU}}_i}^2=1$,${\sigma }_{\mathrm{CBS}‒\text{Eav}}^2={\sigma }_{\mathrm{PBS}‒\text{Eav}}^2={\sigma }_{\mathrm{PBS}‒\text{CU}}^2={\sigma }_{{\mathrm{PBS}‒\text{CU}}_i}^2=0.5$, and γ _p = 10 dB.