Table 1: Simulation parameters and values.

Parameter Values

Macrocell radius 500 m
Number of cellular UE 5
Number of D2D pairs 10
D2D communication distance 10 m
Femtocell radius 10 m
Shadow width ( ) 5 m
Cellular UE power 23 dBm
D2D transmit power 0–23 dBm
Thermal noise power density −174 dBm/Hz
Bandwidth 180 kHz
Transmission time interval 1 ms