Figure 1From: A distributed power control and mode selection algorithm for D2D communicationsIllustration of D2D communications, when a user equipment (UE1) and a D2D pair (Tx UE–Rx UE) may use the same OFDM PRB. Due to the D2D link, intracell interference as well as intercell interference between D2D and cellular links (UE3 to Rx UE) can be very high. (In this example assuming that the D2D link uses cellular UL resources).Back to article page