Fig. 5From: Artificial noise-assisted physical layer security in D2D-enabled cellular networksThe secrecy outage probability of the typical cellular link in scenario I versus the density of the D2D user λ d under different densities of the eavesdropper λ e where λ b =0.0001/m 2. Figure 5 illustrates the relationship between the secrecy outage probability of the typical cellular link in scenario I and the density of the D2D userBack to article page