The simulation results are shown in Fig 3 and Fig 4.EnodeBs don't create users except center eNodeB, because we only focus on center eNodeB and all the users attached to this base station. The neighbor eNodeBs of center eNodeB are only created to generate interference. It reduces unnecessary computation and saves the simulation time, makes the simulation more efficiency. Cellular users are represented in blue point while D2D users in green point in Fig 3. We find out that the interference caused by D2D transmitters is negligible when the distance between cellular users and D2D users is long.Thus in this simulation, the distribution of all users is intensive so that cellular users will suffer the interference from D2D transmitters. In Fig 4,we evaluate the performance of all users,
cellular users, and 020 users. We adopt CDF curve to reflect
distribution of the average UE throughput