Outage and ASE Analyses for Power Controlled D2D Communication

In fifth-generation technology, device-to-device (D2D) communication underlaid with a cellular network provides a feasible solution for proximity-based wireless applications and services. D2D communication allows a direct connection between two devices without traversing through the base station. It can potentially reduce the data traffic in the cellular networks with improved spectral and energy efficiency. However, interference management is a primary concern when D2D links utilize the same resources occupied by cellular users. In this paper, we propose a location-based power control approach to mitigate the severe interference components for underlaying D2D communication cellular network for multicell scenario. Moreover, outage analysis for the cellular user as well as D2D user is carried out by using the tools from stochastic geometry. Outage performance is further improved by employing a cooperation approach that also enables D2D user's power saving. Further, area spectral efficiency (ASE) analysis is performed using the proposed power control and cooperation approach for the overall system model. We obtain the optimal D2D user density to maximize the ASE. Finally, the numerical results are presented to validate the analytic observations of the proposed framework.