Interference Mitigation for Multicast D2D Communications Underlay Cellular Networks

The interference caused by the D2D users to conventional cellular users and vice versa are the main drawbacks of underlay D2D communications. In order to mitigate the interference issue, we propose a resource management scheme based on frequency reuse method. In this paper, we formulate the problem of sum throughput optimization problem where each multicast D2D group can reuse only one uplink cellular link at a time. Also, the fractional frequency reuse (FFR) technique is considered and assumed that the cellular users and D2D users can share the resources in a non-orthogonal fashion. The performance of the proposed scheme is evaluated through extensive simulations using Monte-Carlo simulation. Simulation results demonstrate that the proposed scheme outperforms the random resource management scheme without cell sectorization method.