Performance analysis of power control for device-to-device communication in cellular MIMO systems

The Device-to-Device (D2D) communication can increase data rates and resource utilization in cellular networks. However, the direct application of the D2D communication can cause harmful interference to the cellular network. Therein, power control algorithms become essential tools to keep interference controlled and to ensure improved system performance. In this paper, we study two power control strategies for D2D communication within Multiple Input Multiple Output (MIMO) cellular networks. In the first strategy, each user achieves a certain target Signal to Interference-plus-Noise Ratio (SINR) while minimizing the total transmit power. In the second one, the target SINR varies with user´s transmit power. Simulation results show that system capacity can be improved only if D2D communication and power control are appropriately combined.