Interference management for Device to Device communication Underlying Cellular Networks Using DRC And FFR

Abstract

D2D communication aims to improve the spectral efficiency and increases the overall system capacity. In the proposed scheme, sharing the uplink channel of a cellular system is analyzed in single cell and multi cell. In single cell , the model investigated how to properly choose a CUE for the D2D link, by using Distance constrained Resource sharing Criteria (DRC) for the base station to select the best resource ofa CUE to reuse it for a D2D link. Lminis a pre selected distance constraint to control the interference from the selected CUE to the D2D UE1 to be interference in the stable levelL ≥ Lmin,(Lmin=150.437 ),to adjusted the power transmitted from CUE ,using OFPC, Open loop power control is capability of the UE transmitter to set its uplink transmit power to a specified value suitable for receiver. In multi cell, used fractional frequency reuse in D2D Communication,assumed cluster consist of three cell, studied the distance of location for D2D pair from the center of the cell edge of inner region,to cell edge of total cell with out FFR. Assumed the D2D pair in inner region in first cell the D2D pair faces interference from inner region from other cells which it has same frequency. Calculated the distance from tow center and from D2D pair ,and calculate the SINR The simulation results show that the proposed scheme can enhance the value of SINR and optimal system capacity on the promise of ensuring the cellular communication quality.